Relevant bibliographies by topics / Sandy Spring

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Sandy Spring'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "Sandy Spring"

1

Johansson, Per-Olof. "Spring Discharge and Aquifer Characteristics in a Sandy Till Area in Southeastern Sweden." Hydrology Research 18, no. 4-5 (1987): 203–20. http://dx.doi.org/10.2166/nh.1987.0015.

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Spring discharge and groundwater levels were used to study groundwater outflow recessions, groundwater reservoir sizes, water yielding properties and saturated hydraulic conductivities in a sandy till area in southeastern Sweden. Water chemistry was used as an indicator of flow paths. The catchment areas of the five springs, ranging from approximately 0.01 km2 to 0.2 km2 in size, were all mainly covered with coniferous forest. The maximum active groundwater storages of the catchment areas of the springs varied from 75 to 145 mm. As a comparison the maximum total groundwater storage of the till in the catchment area of the largest spring was estimated to 1,250 mm. Two springs were chosen for detailed studies. The highest peak discharge of the smallest of these springs was 1.7 mm/day and it usually dried up in summer. The discharge from the largest spring was evenly distributed and varied between 0.2 and 0.8 mm/day. Frequent analyses of water chemistry during a spring with intense snowmelt revealed no change of water composition in spite of a great increase in discharge; for the smallest spring by more than 30 times. Integrated values of the specific water release from the unsaturated zone to the groundwater reservoir were calculated from runoff volumes and decreasing groundwater levels for the catchment area of the largest spring. The different values obtained from dry summer and winter periods, 0.024 and 0.047 respectively, indicated a strong influence from evapotranspiration. It the same spring, an areally integrated value of the saturated hydraulic conductivity was estimated to 6 × 10−5 m/s from a linearized solution of the Boussinesq equation.
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Zandvoort, R. "Leaching of fluridone, hexazinone and simazine in sandy soils in the Netherlands." Netherlands Journal of Agricultural Science 37, no. 3 (1989): 257–62. http://dx.doi.org/10.18174/njas.v37i3.16636.

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Fluridone and simazine were sprayed in field experiments on coarse and humic sandy soils in spring or in late autumn, and hexazinone on coarse sand in spring. After a spring application, over an eight-month period, fluridone and hexazinone were detected by bioassay in the profile of coarse sand from 0 to 60 cm, whereas simazine did not leach below 15 cm. Both fluridone and simazine were found to a depth of 60 cm in coarse sand after an application in late autumn. Thus, in winter conditions the transformation rate is not fast enough to prevent leaching of fluridone and simazine to deeper soil layers after autumn application. (Abstract retrieved from CAB Abstracts by CABI’s permission)
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Yanina, Olga, Anton Chigarev, Alexander Yanin, Peter Kalugin, and Yanina Yanina. "Investigation of changes in the physical properties of the sandy soil in geotechnical control of the road embankment." MATEC Web of Conferences 170 (2018): 03026. http://dx.doi.org/10.1051/matecconf/201817003026.

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The aim of this work is to determine the effect of “temperature-precipitation” climate parameters on the physical properties of sandy soil of an embankment during the construction period. The object of this study is sand from a quarry and the upper layer of the road embankment before and after the climatic effect during the “autumn-winter-spring” period. The results of this study revealed changes in sand gradation, coefficient of permeability and void ratio of a sandy soil after the influence of “temperature-precipitation” climate parameters during a short time period. The results of this study can be used for geotechnical control of construction process.
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Ivancic, Kate A., Matthew D. Ruark, Francisco J. Arriaga, and Erin M. Silva. "Spring-seeded Green Manures Continue to Demonstrate Variable Benefits on Sandy Soil." HortScience 54, no. 11 (2019): 2031–38. http://dx.doi.org/10.21273/hortsci14262-19.

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Spring-planted green manure cover crops may provide a nitrogen (N) benefit to a subsequent sweet corn (Zea mays L.) crop, but spring growth and lack of consistent benefits documented in previous studies provide limitations to adoption. Berseem clover (BC; Trifolium alexandrinum) and chickling vetch (CV; Lathyrus sativus L.) are two legumes that could be beneficial when spring-seeded, but they have not been well studied in this context. The objectives of this study were to measure spring-seeded cover crop biomass and N yield, and the subsequent effects on sweet corn yield and response to N fertilizer. The study was conducted in 2014 and 2015, and the experimental design was a randomized complete block split-plot design with cover crop as whole-plot treatments [CV, BC, berseem clover and oat (Avena sativa) mixture (BC + O), oats, and no cover crop] and N rate as split-plot treatments. Cover crop growth and effects on sweet corn production varied greatly between years, with both cover crop and sweet corn biomass greater in 2015, although BC produced very little biomass (<0.7 Mg·ha–1) and thus is not recommended for spring seeding. In 2014, CV resulted in the lowest agronomically optimum N rates (AONRs) compared with no cover crop, suggesting a potential N credit when only having an N yield of 11.6 kg·ha–1, but this effect was not seen in 2015. There was also no evidence that oat would supply N to the subsequent crop. Overall, evidence is lacking that any spring-seeded cover crop will provide a consistent N benefit on sandy soil, and limitations to spring growth may preclude widespread adoption.
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Maag, M. "Denitrification Losses from Sandy and Sandy Loam Soils under Spring Barley Fertilized with Slurry and Ammonium Nitrate." Acta Agriculturae Scandinavica, Section B — Soil & Plant Science 45, no. 4 (1995): 234–41. http://dx.doi.org/10.1080/09064719509413109.

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Varga, Csaba. "The Effect of Soil Coverings on Cellulose Decomposition Activity of Sandy Soil." Acta Agraria Debreceniensis, no. 12 (November 26, 2003): 15–20. http://dx.doi.org/10.34101/actaagrar/12/3424.

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The purpose of our experiments is to discover the effect of different soil cover matter (agroszövet and black polyethylene) on actual (under field circumstances) and potential (under laboratory circumstances) cellulose decomposition activity. In our field research, the Unger-test was used, and in laboratory research, the Petkov-Markova method was applied. In the first year of the experiment (2000) actual cellulose decomposition activity was significantly higher in covered than in the uncovered soil both in spring and autumn. The difference between the two treatments was significant only in spring. In the spring of 2001 black polyethylene showed significantly the lowest, activity, while in autumn the agroszövet (a porous black polyethylene) showed significantly the highest activity. In the autumn of 2001 the soil covered by black polyethylene gave non-significant,and the soil covered by agroszövet gave a significant higher activity value than the control. Averaging the two experimental years (2000-2001), the actual cellulose decomposition activity was significantly higher in covered soils both in spring (with 30-39%) and in autumn (with 34-69%). Moreover, in autumn a significantly higher value was detected under agroszövet than in any other treatment. The difference between the effect of treatments was not significant. In 2000, the potential cellulose decomposition activity was the highest in soil covered by agroszövet in spring, but in autumn higher activity value was detected in every covered soil than in the control. In the spring of 2001, every covered soil showed a lower, but in autumn a higher, potential cellulose decomposition rate than the control. The activity decreased significantly 27 (agroszövet) and 45 (black polyethylene) percent in spring, and increased no- significantly 8 (agroszövet) and 4 (black polyethylene) percent in autumn. During the two experimental years, we observed on average lower potential cellulose decomposition activity (15-60%) in spring and a higher one (14-43%) in autumn. Neither was significant. The dynamic of potential cellulose decomposition activity averaging 2000 and 2001 showed a slight, the actual cellulose decomposition activity an explicit non-significant upward tendency. There was a strong (r=0,189) correlation obtained between the actual and potential cellulose decomposition activity of soil, and a medium-strong (r=0,673) relationship between the soil moisture content and actual cellulose decomposition activity.
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Brand, Evelien, Anne-Lise Montreuil, Rik Houthuys, and Margaret Chen. "Relating Hydrodynamic Forcing and Topographic Response for Tide-Dominated Sandy Beaches." Journal of Marine Science and Engineering 8, no. 3 (2020): 151. http://dx.doi.org/10.3390/jmse8030151.

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To relate hydrodynamic forcing and topographic response for a tide-dominated sandy beach, extensive field measurements were carried out in the intertidal zone. Hydrodynamics and beach topography were monitored during a total of 12 weeks at two different study sites: one with a featureless intertidal zone and one with intertidal bars. The results of both study sites indicate that the intertidal beach grows when wave steepness is small, whereas it erodes when wave steepness is large. Spring-neap variations in tidal current direction heavily distort this trend: strong spring tidal currents transport sediment away from the beach, resulting in enhanced erosion. Tide-induced beach volume changes are on the same order of magnitude as wave-induced changes. Besides waves and tides, the effect of variations in the amount of sediment supply is substantial, with enhanced accretion when the sediment supply is large. The effect of variations in sediment supply on the intertidal beach topography is subordinate to the effect of waves and tide, though. From this study, it is concluded that larger waves are primarily erosive, but they can also enhance the natural sediment supply. Furthermore, it is found that tidal currents can be equally important as waves in shaping the beach topography, especially during spring tide on macrotidal beaches.
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Gutezeit, Bodo. "Plant Mass and Yield of Broccoli as Affected by Soil Moisture." HortScience 41, no. 1 (2006): 113–18. http://dx.doi.org/10.21273/hortsci.41.1.113.

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The effect of water supply on total mass and yield of broccoli (Brassica oleracea L. var. italica, `Emperor') was examined in an experiment carried out in a microplot field installation on three soil types: Gleyic Cambisol (sand) and Eutric Fluvisol (flood-plain loam) in spring and fall and on a Haplic Phaeosem (loessal loam) in fall. Soil moisture levels were established by irrigation under the following replacement protocols: 14 mm whenever the limit of 75% vol of the available soil water (ASW), 14 and 28 mm whenever the limit of 55% vol of ASW, and 14, 28, and 42 mm whenever the limit of 35% vol of ASW were reached. The highest total plant mass was achieved by irrigation at 75% vol of ASW on the sandy soil in spring cultivation, and at 55% vol of ASW (in doses of 28 mm) on the flood-plain loam in fall cultivation. The highest marketable yield (head mass) was obtained on the sandy soil at 55% vol of ASW (in doses of 14 mm) for both spring and fall production. The total plant mass and head mass was only significantly affected by reduced soil moisture at 35% vol of ASW in spring. At 75% vol of ASW, irrigation with 14 mm always resulted in reduced headmass. In fall, yield was not affected by soil moisture depletion or soil type. For the production of broccoli, it is recommended that irrigation be started when soil moisture falls below 55% vol of ASW, followed by a water application rates of either 14 or 28 mm.
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Nicola, Silvana, and Daniel J. Cantliffe. "Increasing Cell Size and Reducing Medium Compression Enhance Lettuce Transplant Quality and Field Production." HortScience 31, no. 2 (1996): 184–89. http://dx.doi.org/10.21273/hortsci.31.2.184.

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`South Bay' lettuce (Lactuca sativa L.) seedlings were grown in a greenhouse during winter, spring, and fall to investigate the effect of cell size and medium compression on transplant quality and yield. Four Speedling planter flats (1.9-, 10.9-, 19.3-, 39.7-cm3 cells) and two medium compression levels [noncompressed and compressed (1.5 times in weight)] were tested. The two larger cell sizes and compression of the medium led to increased plant shoot growth. Conversely, root weight ratio [RWR = (final root dry weight ÷ final total dry weight + initial root dry weight ÷ initial total dry weight) ÷ 2] was highest with the smaller cells without medium compression. Lettuce transplants were field-grown on sand and muck soils. The larger cells delayed harvest by >2 weeks for plants grown on muck soil, but yield was unaffected. When grown on sandy soil, earliness was enhanced from plants grown in 19- and 40-cm3 cells, but head weights were not affected in the spring planting. In fall, heads were heavier for plants grown in 11-, 19-, or 40-cm3 cells compared with those from 2-cm3 cells. On sandy soil, harvest was delayed 13 days in spring and 16 days in fall for plants grown in the smallest cell size. Using the two smaller cell sizes saved medium and space in the greenhouse and increased the root growth ratio, but it led to reduced plant growth compared to using the bigger cells. Yield and earliness were more related to season and soil type than to transplant quality. On sandy soil, plants grown in 2- and 11-cm3 cells matured later, and yield was significantly decreased (8.6%) in fall by using plants from the 2-cm3 cells compared to the other sizes. From our results, compressing the medium in the cells was not justified because it is more costly and did not benefit yield in the field.
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Hochmuth, G. J., R. C. Hochmuth, M. E. Donley, and E. A. Hanlon. "Eggplant Yield in Response to Potassium Fertilization on Sandy Soil." HortScience 28, no. 10 (1993): 1002–5. http://dx.doi.org/10.21273/hortsci.28.10.1002.

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`Classic' eggplant (Solanum melongena L.) responses to K fertilization were evaluated in Spring and Fall 1991 at Live Oak, Fla., on soils testing low in Mehlich-1 extractable K. Total season yield leveled off at 51.1 t·ha-1 with 94 kg K/ha fertilization in spring and at 53.3 t·ha-1 with 60 kg K/ha in fall. Critical K concentrations (in grams per kilogram) in whole leaves were ≈45 at first flowering, 35 at early fruiting, 30 during harvest, and 28 at the end of seven harvests. Fresh petiole-sap K critical concentrations (in milligrams per liter) were ≈4500 to 5000 before harvest and 4000 to 4500 during harvest. Less than 3500 mg K/liter in fresh sap indicated K deficiency in fruiting plants. The Mehlich-1 soil extractant procedure predicted similar responses at the two sites; however, yield responses showed that the two sites differed in fertilization requirements. Fertilizer recommendations for K at both sites exceeded eggplant K requirements.
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Dissertations / Theses on the topic "Sandy Spring"

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Braim, M. A. "The effect of simplified cultivation on the growth and yield of spring barley on a sandy loam." Thesis, University of Leeds, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373453.

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Staugaitienė, Rūta. "Effect of different sulphur fertilisation rates on plant productivity and on changes in sulphur content in soil and plants." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140910_144606-11913.

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Objective of the research – the research was to determine the effect of different sulphur fertilisation rates on the mineral sulphur content in soil and the seed/grain yield and quality of spring rape and spring wheat crops grown on low in sulphur sandy light loam Epicalcari – Endohypogleyic Cambisols and very low in sulphur sandy loam on light loam Orthi-Haplic Luvisols. Tasks of the research: To determine the effect of different sulphur fertilisation rates applied to low in sulphur sandy light loam Epicalcari – Endohypogleyic Cambisols and very low in sulphur sandy loam on light loam Orthi-Haplic Luvisols on: • Spring rapeseed yield and crop structural elements; • Spring rapeseed quality; • Spring wheat yield and crop structural elements; • Spring wheat grain quality; • Changes in the mineral sulphur content in soil.
Tyrimų tikslas – nustatyti skirtingų sieros trąšų normų įtaką vasarinių rapsų ir vasarinių kviečių derliui, jo kokybei bei mineralinės sieros kiekiui mažai ir labai mažai sieringame smėlingame lengvo priemolio sekliai karbonatingajame giliau glėjiškajame rudžemyje (Epicalcari – Endohypogleyic Cambisol ) ir priesmėlio ant lengvo priemolio tipingajame paprastajame išplautžemyje (Orthi-Haplic Luvisol). Tyrimų uždaviniai: Nustatyti sieros trąšų normų įtaką mažai ir labai mažai sieringame smėlingame lengvo priemolio sekliai karbonatingajame giliau glėjiškajame rudžemyje (Epicalcari – Endohypogleyic Cambisol ) ir priesmėlio ant lengvo priemolio tipingajame paprastajame išplautžemyje (Orthi-Haplic Luvisol): • Vasarinių rapsų sėklų derliui ir struktūros elementams. • Vasarinių rapsų sėklų kokybei. • Vasarinių kviečių derliui ir struktūros elementams • Vasarinių kviečių grūdų kokybei. • Mineralinės sieros kiekio pokyčiams dirvožemyje.
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Sierer, Rachel. "The zooarchaeology of two pony express stations in Central Nevada Sand Springs and Cold Springs /." abstract and full text PDF (UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1460778.

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Neu, Roene Ellen Medellia. "An Investigation of Source Water Feeding Buck Creek, Great Sand Dunes National Monument and Preserve." Bowling Green State University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1100552677.

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Naser, Tim, and Stavros Ntouvas. "Gobi : Automatic sand-spreading robot." Thesis, KTH, Mekatronik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-296306.

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The purpose of this report was to research through the construction of a prototype the technical challenges associated with creating a robot that distributes sand on patios after snowfall. A robot that could complete this task should be able to know its position in an unknown terrain and traverse it in a predictable manner that allows for the even spread of the sand. In order to achieve stability and predictability of movement, stepper motor driven wheels were chosen as the steering method. The sand-spreading mechanism consists of a DC Motor connected to a 3D-printed disc with rectangular extrusions at its base. The wheels and chassis of the robot were likewise 3D-printed. Lastly, an Arduino MEGA board was the controller of choice.
Syftet med denna rapport var att genom konstruktionen aven prototyp undersöka de tekniska utmaningarna för att skapa en robot som distribuerar sand på uteplatser efter snöfall. En robot som kan slutföra denna uppgift bör kunna känna till sin position i en okänd terräng och färdas på den på ett förutsägbart sätt som möjliggör en jämn spridning av sanden. För att uppnå stabilitet och förutsägbarhet för rörelse valdes stegmotordrivna hjul som styrmetod. Sandspridningsmekanismen består av en likströmsmotor ansluten till en 3D-utskriven skiva med rektangulära extruderingar vid basen. Robotens hjul och chassi var också 3D-utskrivna. Slutligen var ett Arduino MEGA-kort den valfriastyrenheten.
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Wells, Corey Moran. "The hydrology and geochemistry of a saline spring fen peatland in the Athabasca oil sands region of Alberta." Thesis, 2014. http://hdl.handle.net/10012/8402.

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Due to the nature of the regional geology and the bitumen extraction process, the post-mined landscape of Canada’s oil sands region will have a much higher concentration of dissolved salts than it did prior to mining. As a result, naturally saline wetlands may constitute appropriate reclamation targets and knowledge of saline wetland hydrology can provide important clues to their form and function. Furthermore, the presence of saline discharge features in the Athabasca oil sands region (AOSR) provides an opportunity to study more closely the nature of groundwater flow in a region of considerable hydrogeologic complexity, including the origin and flow history of brines and the link between springs, subsurface wastewater containment and surface water quality. A low-flow saline-spring fen peatland located adjacent to a proposed in-situ oil extraction facility was examined south of the oil sands hub of Fort McMurray, Alberta. Hydrologically disconnected from underlying Devonian deposits that are a typical source of salinity, a saline groundwater plume originating from a Lower Cretaceous aquifer (the Grand Rapids Formation) was identified as a likely source for the accumulation of Na+ (mean of 6,949 mg L-1) and Cl- (mean of 13,766 mg L-1) in fen groundwater. Considerable spatial variability in ground and surface water salinity was observed, with the concentration of dissolved salts decreasing by an order of magnitude in the direction of flow. A sharp decrease in near-surface salinity was found along the entire perimeter between the fen and adjacent freshwater wetlands. Patterns in deep groundwater flux were difficult to interpret due to possible inaccuracies associated with the piezometer network (e.g., time-lag errors in low hydraulic conductivity substrates), and rates of groundwater input were estimated to be small (< 1 mm over a season) due to the low conductivity of the underlying mineral till (5.5x10-7 cm s-1). Water table dynamics were exaggerated in response to wetting and drying for both study seasons and the fen’s small subsurface storage capacity was readily exceeded under periods of sustained rainfall. The large pond network functioned as an effective transmitter of surface water during periods of high water table but was a sink of groundwater during dry periods due to high rates of evaporation. Despite flooding conditions observed in 2012, groundwater exchange between the fen and adjacent wetlands was low and the rough microtopography worked to detain surface waters and restrict runoff in the fen’s lower reaches. Together these mechanisms worked to isolate the saline fen and restrict the flux of saline waters into the surrounding landscape. Elevated concentrations of dissolved salts in nearby wetland and river systems indicates that influence of saline discharge is not solely restricted to the region’s major river systems. The flux of salt from saline wetlands may play an important role in the overall water quality of groundwater and receiving water bodies (e.g., nearby river systems). The geochemical signature of fen groundwater points to halite as a source of salinity, as indicated by Cl-/Br- ratios in excess of 7,000. This is in contrast to what has been observed for regional formation brines that are typically related to evaporated seawater. Isotopic evidence and relatively low salinities compared to springs in the Wood Buffalo region suggests that fen discharge water may be significantly diluted as a result of mixing with freshwater sources. The contribution of evaporite to discharge water may be coming from somewhere deeper and further south in the basin. This has important implications for the disposal of wastewater by deep well injection, as disposal zones may be hydrologically linked to near-surface aquifers and discharge features well beyond the immediate production and storage area.
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Books on the topic "Sandy Spring"

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Nash, Sylvia. Annals of Sandy Spring. Sandy Spring Museum, 1987.

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Lindsay, Robert Bryan. Spring chinook salmon in the Willamette and Sandy Rivers. Oregon Dept. of Fish and Wildlife, 1999.

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Sandy Spring Monthly Meeting of the Religious Society of Friends. Graveyard and Grounds Committee. Burials at the Sandy Spring Friends Meeting Graveyard and at the Woodside Cemetery, 1754 to 2003: A listing of burials and the writing on grave stones of a Quaker community. Graveyard and Grounds Committee, Sandy Spring Friends Meeting, 2003.

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V, Moore Morris, and Heritage Sandy Springs, eds. Sandy Springs. Arcadia Pub., 2010.

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Sidetrip to Sand Springs. Avalon Books, 2000.

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United States. Bureau of Land Management. Division of EIS Services. Final environmental impact statement on the P R Spring combined hydrocarbon lease conversion. Dept. of Interior, Bureau of Land Management, Denver Service Center, Division of Environmental Impact Statement Services, 1985.

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Services, United States Bureau of Land Management Division of EIS. Draft environmental impact statement on the P R Spring combined hydrocarbon lease conversion. Dept. of the Interior, Bureau of Land Management, Denver Service Center, Division of Environmental Impact Statement Services, 1985.

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Gwynn, J. Wallace. Tar sand data for the P.R. Spring and Hill Creek areas, Uintah and Grand counties, Utah. Utah Geological Survey, 2008.

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Neel, Jim. Salvation on Sand Mountain. Alexandria Museum of Art, 1995.

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Thompson, Robert E. Sand Springs, Oklahoma: Consolidated name and subject indexes to major genealogical and historical sources. Genealogical Research Associates, 1996.

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Book chapters on the topic "Sandy Spring"

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Price, Jonathan D., John P. Hogan, M. Charles Gilbert, and James D. Payne. "Surface and Near-Surface Investigation of the Alteration of the Mount Scott Granite and Geometry of the Sandy Creek Gabbro Pluton, Hale Spring Area, Wichita Mountains, Oklahoma." In Proceedings of the International Conferences on Basement Tectonics. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5098-9_4.

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Kedzierski, Mikaël, Véronique Le Tilly, Patrick Bourseau, et al. "Challenging the Microplastic Extraction from Sandy Sediments." In Springer Water. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-71279-6_9.

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Towhata, Ikuo. "Postliquefaction Behavior of Sandy Ground." In Springer Series in Geomechanics and Geoengineering. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-35783-4_22.

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Bährle-Rapp, Marina. "sea sand." In Springer Lexikon Kosmetik und Körperpflege. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_9225.

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Leont’yev, I. O., and T. M. Akivis. "Prediction of Groins Impact on a Sandy Beach." In Springer Geology. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69040-3_19.

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Yee, E., J. H. Lee, Y. S. Kim, S. R. Chung, H. Y. Kim, and B. S. Chun. "Strength and Permeability of Biostabilized Sand." In Springer Geology. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-31671-5_12.

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Zhao, Yong-gang, Lei Li, Liu-qi Shi, Zheng-jie Wang, Lu-yan Yang, and Zhi-wei Wang. "Sand Body Microfacies Types and Single Sand Body Division in Sandy Braided River Reservoirs: A Case Study from Yan10 Member in the H303-6 Well Area, Southwestern Ordos Basin, China." In Springer Series in Geomechanics and Geoengineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0761-5_218.

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Cocca, Mariacristina, Francesca De Falco, Gennaro Gentile, et al. "Degradation of Biodegradable Plastic Buried in Sand." In Springer Water. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-71279-6_28.

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Huang, Jizhi, and Guoyuan Xu. "Study on the Constitutive Model of Sandy Pebble Soil." In Springer Series in Geomechanics and Geoengineering. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97112-4_6.

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Doanh, T., Z. Finge, S. Boucq, and Ph Dubujet. "Histotropy of Hostun RF Loose Sand." In Springer Proceedings in Physics. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-35724-7_24.

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Conference papers on the topic "Sandy Spring"

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RUDZIANSKAITĖ, Aurelija, and Stefanija MISEVIČIENĖ. "INVESTIGATION OF PHOSPHORUS CHANGE IN A SANDY LOAM ASSOCIATED WITH CONTROLLED DRAINAGE." In Rural Development 2015. Aleksandras Stulginskis University, 2015. http://dx.doi.org/10.15544/rd.2015.066.

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Most of the soil chemical matters are soluble in the water; therefore changes in hydrological regime of ecosystem are closely related to the changes of nutrient leaching. Excess phosphorus causes eutrophication in surface waters. The aim of the research was to establish controlled drainage influence on the soil moisture regime, on the amount of mobile phosphorus in the soil and its leaching. Investigations were carried out in sandy loam and loam soils in the Middle Lithuanian Lowland from June 2014 to June 2015. During the study period precipitation was 93 % of the climate normals, the average temperature was 1.4 ° C higher than the climate normals. Based on preliminary studies, several tendencies were observed, that when drainage outflow began, the amount of soil moisture in subsoil (50–80 cm layer of the soil) of controlled drainage plot was higher than in the conventional drainage plot, and higher moisture supplies stayed for a longer period of time. Also the fluctuation (variation’s coefficient 24 %) of mobile P2O5. was higher. The Ptotal and PO4-P concentrations were lower in the controlled drainage than in the conventional drainage during winter – spring flood period, when water pressure was the highest (70 cm) in the outlet of drainage and water flowed through flap of the riser column
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Szydlowski, Hanna V., Ian Z. Winkelstern, and Patrick M. Colgan. "PRELIMINARY STABLE ISOTOPE AND PIEZOMETER DATA SUGGEST A RAPID RESPONSE OF SPRING DISCHARGE TO SEASONAL RECHARGE IN A SHALLOW SANDY AQUIFER, OTTAWA COUNTY, MICHIGAN." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-354433.

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Waugh, William J., Craig H. Benson, and William H. Albright. "Sustainable Covers for Uranium Mill Tailings, USA: Alternative Design, Performance, and Renovation." In ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16369.

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The U.S. Department of Energy Office of Legacy Management is investigating alternatives to conventional cover designs for uranium mill tailings. A cover constructed in 2000 near Monticello, Utah, USA, was a redundant design with a conventional low-conductivity composite cover overlain with an alternative cover designed to mimic the natural soil water balance as measured in nearby undisturbed native soils and vegetation. To limit percolation, the alternative cover design relies on a 160-cm layer of sandy clay loam soil overlying a 40-cm sand capillary barrier for water storage, and a planting of native sagebrush steppe vegetation to seasonally release soil water through evapotranspiration (ET). Water balance monitoring within a 3.0-ha drainage lysimeter, embedded in the cover during construction, provided convincing evidence that the cover has performed well over a 9-year period (2000–2009). The total cumulative percolation, 4.8 mm (approximately 0.5 mm yr−1), satisfied a regulatory goal of &lt;3.0 mm yr−1. Most percolation can be attributed to the very wet winter and spring of 2004–2005, when soil water content exceeded the storage capacity of the cover. Diversity, percent cover, and leaf area of vegetation increased over the monitoring period. Field and laboratory evaluations several years after construction show that soil structural development, changes in soil hydraulic properties, and development of vegetation patterns have not adversely impacted cover performance. A new test facility was constructed in 2008 near Grand Junction, Colorado, USA, to evaluate low-cost methods for renovating or transforming conventional covers into more sustainable ET covers.
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HŮLA, Josef, and Petr NOVÁK. "IMPACT OF WORKING SPEED ON SOIL PARTICLES TRANSFER DURING SECONDARY SOIL TILLAGE." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.206.

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Displacement of soil particles by erosion can be seen as a major threat to the quality of agricultural land in the conditions of Czech Republic. While the effects of water and wind erosion have long been investigated and reported, the effect of soil tillage technology on soil particles translocation are relatively new area of agriculture research. Soil tillage may contribute to the undesirable translocation of soil particles towards lower-lying parts of fields especially on slopes. The effect of soil tillage implements on soil particle translocation has not been sufficiently explained yet. The object of this research was to assess the influence of different operating speed of power harrow on soil particle translocation during secondary tillage (soil preparation). Measurements to determine the displacement of soil particles were performed in location Nesperská Lhota in the Central Bohemia Region. Measurements were performed on a sandy loam cambisol after harvest spring cereals (oat for sillage production). To indicate displacement of soil particles was used grit of white limestone (size 10-16 mm). Limestone was put down into the trench with known position orthogonal to the direction of working operations. Subsequently were performed working operations in the specified sequence. Limestone particles were counted and weighed in each section. It was detected by measuring the different nature of displacement. Statistical significance of differences in the weight of translocated particles was evaluated for different operating speeds of power harrow from 4.5 to 12 km.h-1.
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Mairal, Aditya A., Akash B. Pandey, and Jimil M. Shah. "Embedded Controller Based Automatic Gear Change Mechanism for Two Wheeled Manual Transmission Motorcycle." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-68127.

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For the vehicle to move forward the engine has to be connected to driving wheels so as to propel the vehicle. The engine rotates at relatively high speeds, while the wheels are required to turn at slower speeds. The torque requirements of the vehicle vary as per the prevailing conditions of load, terrain etc. Gear box provides different gear ratios between the engine and the driving wheels, to suit the varying road conditions such as when climbing hills, traversing rough road or sandy road or pulling a load. The required gear shift for providing varying torque requirements can be obtained either manually or automatically. Automatic gear shifting mechanism is a concept implementing an embedded control system for actuating the gears automatically without human intervention. The automation is achieved by using a microcontroller and suitable sensor and actuator hardware. Whenever the speed of the vehicle increases or decreases beyond a pre-defined set of values, the microcontroller based control system actuates the clutch as well as the gear and helps maintain a steady operation of the automobile. The concept of automatic gear change is applied in this work to a 4-stroke, manual transmission motorcycle. The clutch is actuated by means of a DC Motor actuated mechanism and gear lever is actuated by means of the spring loaded solenoid actuator, both controlled by a microcontroller based circuit, programmed to read the signals from an inductive proximity sensor which senses the actual speed of the wheel. The system design and development is described in this paper with control circuit and control logic.
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Mairal, Aditya A., Akash B. Pandey, and Jimil M. Shah. "Embedded Controller Based Automatic Gear Change Mechanism for Two Wheeled Manual Transmission Motorcycle." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-68128.

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For the vehicle to move forward, the engine has to be connected to driving wheels so as to propel the vehicle. The engine rotates at relatively high speeds, while the wheels are required to turn at slower speeds. The torque requirements of the vehicle vary as per the prevailing conditions of load, terrain etc. Gear box provides different gear ratios between the engine and the driving wheels, to suit the varying road conditions such as when climbing hills, traversing rough road, moving on sandy road or pulling a load. The required gear shift for providing varying torque requirements can be obtained either manually or automatically. Automatic gear shifting mechanism is a concept implementing an embedded control system for actuating the gears automatically without human intervention. The automation is achieved by using a microcontroller and suitable sensor and actuator hardware. Whenever the speed of the vehicle increases or decreases beyond a pre-defined set of values, the microcontroller based control system actuates the clutch as well as the gear and helps maintain a steady operation of the automobile. The concept of automatic gear change is applied in this work to a 4-stroke, manual transmission motorcycle. The clutch is actuated by means of a DC Motor actuated mechanism and gear lever is actuated by means of the spring loaded solenoid actuator, both controlled by a microcontroller based circuit, programmed to read the signals from an inductive proximity sensor which senses the actual speed of the wheel. The system design and development is described in this paper with control circuit and control logic.
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Tart, Rupert G., and John M. O. Hughes. "In-Situ Evaluation of Pipeline Bedding and Padding Spring Constants." In 1998 2nd International Pipeline Conference. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/ipc1998-2088.

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Structural response analyses of pipelines using computer models, such as AutoPIPE, incorporate soil “springs” to model the restraint provided by pipeline bedding and padding. These “springs” are referred to as spring constants and are most frequently determined from a limited number of sources in the literature. In some cases representative soil properties are used with theoretical and empirical formulae such as those presented by Nyman (1984). This technique which is referred to herein as the ASCE technique has been used by Alyeska Pipeline Service Company (Alyeska) engineers in their calculations of structural response of the buried pipeline along the Trans Alaska Pipeline System (TAPS) (Hart et al, 1998). This paper describes a field study at a pipeline inspection dig in which spring constants were determined directly from a series of field tests to develop a better understanding of the pipeline restraint the bedding and padding is providing for the pipe. Four other papers which cover other aspects of the work performed at this site are also a part of this conference (Hart et al, 1998, Norton et al, 1998, Stevick et al, 1998, Tonkins et al, 1998). The field work included the drilling of multiple boreholes in which drive samples were taken at about 1 to 2 meter (3 to 5 foot) intervals. In each borehole, pressuremeter tests were also conducted at the same intervals as the drive samples. At two levels in the open pipe trench plate, load tests were conducted. Both nuclear and sand cone density tests were made at several levels in the pipe trench. Results of these tests were correlated to each other. Stress strain relationships were developed from the pressuremeter test and plate load test data which were used independently to develop spring constants. Spring constants were found to vary with the strain level in the soils and were correlated to the drive sample blow count data. Recommended methods for estimating spring constants are presented.
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Eichhorn, Geoffrey N., and Stuart K. Haigh. "Landslide Pipe-Soil Interaction: State of the Practice." In 2018 12th International Pipeline Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ipc2018-78434.

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Current understanding of pipe-soil interaction during large ground movement events is insufficient due to their infrequency and the complexity of the infrastructure. Pipeline operators currently rely on a fully coupled continuum model of a landslide and pipeline interaction, or, more commonly, on a simplification of this interface using structural beam style soil-springs to transfer soil loads and displacements to the pipeline. The basis for soil-springs are laboratory studies based largely on clean sand or pure clay, and flat ground. Owing to the use of manufactured soils and flat ground, the soil-pipe interface modelling may not be valid for landslides. The loading of a pipeline in a landslide, and how the soil-spring factors should change with space and time are reviewed and may differ from commonly adopted guidelines. Physical modelling in research is emerging to study landslides and pipelines utilizing fully instrumented scale models. In the absence of fully instrumented field pipelines, physical modelling should be used to validate continuum models.
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Xie, Xueying, Samuel U. Amadi, Courtney S. W. Leiker, et al. "Flowback Strategy Optimization for Permian Unconventional Bone Spring Sands and Wolfcamp Wells." In Unconventional Resources Technology Conference. American Association of Petroleum Geologists, 2021. http://dx.doi.org/10.15530/urtec-2021-5088.

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"Agent-Based Model of Sand Supply Governance Employing Blockchain Technology." In 2018 Spring Simulation Multi-Conference. Society for Modeling and Simulation International (SCS), 2018. http://dx.doi.org/10.22360/springsim.2018.anss.023.

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Reports on the topic "Sandy Spring"

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Chapman, J., T. Mihevc, and A. McKay. Groundwater flow near the Shoal Site, Sand Springs Range, Nevada: Impact of density-driven flow. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10117392.

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Evans, Julie, Kendra Sikes, and Jamie Ratchford. Vegetation classification at Lake Mead National Recreation Area, Mojave National Preserve, Castle Mountains National Monument, and Death Valley National Park: Final report (Revised with Cost Estimate). National Park Service, 2020. http://dx.doi.org/10.36967/nrr-2279201.

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Vegetation inventory and mapping is a process to document the composition, distribution and abundance of vegetation types across the landscape. The National Park Service’s (NPS) Inventory and Monitoring (I&M) program has determined vegetation inventory and mapping to be an important resource for parks; it is one of 12 baseline inventories of natural resources to be completed for all 270 national parks within the NPS I&M program. The Mojave Desert Network Inventory & Monitoring (MOJN I&M) began its process of vegetation inventory in 2009 for four park units as follows: Lake Mead National Recreation Area (LAKE), Mojave National Preserve (MOJA), Castle Mountains National Monument (CAMO), and Death Valley National Park (DEVA). Mapping is a multi-step and multi-year process involving skills and interactions of several parties, including NPS, with a field ecology team, a classification team, and a mapping team. This process allows for compiling existing vegetation data, collecting new data to fill in gaps, and analyzing the data to develop a classification that then informs the mapping. The final products of this process include a vegetation classification, ecological descriptions and field keys of the vegetation types, and geospatial vegetation maps based on the classification. In this report, we present the narrative and results of the sampling and classification effort. In three other associated reports (Evens et al. 2020a, 2020b, 2020c) are the ecological descriptions and field keys. The resulting products of the vegetation mapping efforts are, or will be, presented in separate reports: mapping at LAKE was completed in 2016, mapping at MOJA and CAMO will be completed in 2020, and mapping at DEVA will occur in 2021. The California Native Plant Society (CNPS) and NatureServe, the classification team, have completed the vegetation classification for these four park units, with field keys and descriptions of the vegetation types developed at the alliance level per the U.S. National Vegetation Classification (USNVC). We have compiled approximately 9,000 existing and new vegetation data records into digital databases in Microsoft Access. The resulting classification and descriptions include approximately 105 alliances and landform types, and over 240 associations. CNPS also has assisted the mapping teams during map reconnaissance visits, follow-up on interpreting vegetation patterns, and general support for the geospatial vegetation maps being produced. A variety of alliances and associations occur in the four park units. Per park, the classification represents approximately 50 alliances at LAKE, 65 at MOJA and CAMO, and 85 at DEVA. Several riparian alliances or associations that are somewhat rare (ranked globally as G3) include shrublands of Pluchea sericea, meadow associations with Distichlis spicata and Juncus cooperi, and woodland associations of Salix laevigata and Prosopis pubescens along playas, streams, and springs. Other rare to somewhat rare types (G2 to G3) include shrubland stands with Eriogonum heermannii, Buddleja utahensis, Mortonia utahensis, and Salvia funerea on rocky calcareous slopes that occur sporadically in LAKE to MOJA and DEVA. Types that are globally rare (G1) include the associations of Swallenia alexandrae on sand dunes and Hecastocleis shockleyi on rocky calcareous slopes in DEVA. Two USNVC vegetation groups hold the highest number of alliances: 1) Warm Semi-Desert Shrub & Herb Dry Wash & Colluvial Slope Group (G541) has nine alliances, and 2) Mojave Mid-Elevation Mixed Desert Scrub Group (G296) has thirteen alliances. These two groups contribute significantly to the diversity of vegetation along alluvial washes and mid-elevation transition zones.
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Maps showing altitude of the potentiometric surface and changes in water level of the Sparta sand and Memphis sand aquifers in Eastern Arkansas, spring 1984. US Geological Survey, 1985. http://dx.doi.org/10.3133/wri854223.

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Louisiana ground-water map no. 15: Potentiometric surface of the "1,200-foot" sand of the Baton Rouge area, Louisiana, spring 2001. US Geological Survey, 2003. http://dx.doi.org/10.3133/wri034020.

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Louisiana ground-water map no. 16: Potentiometric surface of the "1,500-foot" sand of the Baton Rouge area, Louisiana, spring 2001. US Geological Survey, 2003. http://dx.doi.org/10.3133/wri034021.

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Maps showing altitude of the potentiometric surface and changes in water levels in the aquifer in the Sparta and Memphis Sands in eastern Arkansas, spring 1985. US Geological Survey, 1986. http://dx.doi.org/10.3133/wri864084.

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