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Literatura académica sobre el tema "Helens"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 5 de febrero de 2022

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Artículos de revistas sobre el tema "Helens"

Calderazzo, J. "Mount St. Helens". Interdisciplinary Studies in Literature and Environment 14, n.º 1 (1 de enero de 2007): 237–40. http://dx.doi.org/10.1093/isle/14.1.237.

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Martí Mus, Mónica, Lennart Jeppsson y John M. Malinky. "A complete reconstruction of the hyolithid skeleton". Journal of Paleontology 88, n.º 1 (enero de 2014): 160–70. http://dx.doi.org/10.1666/13-038.

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Hyolithids are a group of Paleozoic lophotrochozoans with a four-pieced skeleton consisting of a conch, an operculum, and a pair of lateral ‘spines' named helens. Both the conch and operculum are relatively well known and, to a certain extent, have modern analogues in other lophotrochozoan groups. The helens, on the other hand, are less well known and do not have clear modern analogues. This has hindered the knowledge of the complete morphology of the hyolithid skeleton, as well as other aspects of hyolithid biology, such as the organization of soft parts, and their ability to move. The material studied herein, consisting of disarticulated skeletal elements from the Silurian of Gotland, Sweden, illustrates a complete developmental sequence of a hyolithid species and includes the first complete, three-dimensionally preserved helens. Our material confirms that helens were massive skeletal elements, whose growth started proximally with the deposition of a central, coherent lamella. Further shell accretion took place around this lamella, but followed a particular accretion pattern probably constrained by the presence of marginal muscle attachment sites on the proximal-most portion of the helens. These muscle attachment sites were ideally located to allow a wide range of movements for the helens, suggesting that hyolithids may have been relatively mobile organisms.

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Nikoloutsos, Konstantinos P. "FROM TEXT TO SCREEN: CELLULOID HELENS AND FEMALE STARDOM IN THE 1950s". Cambridge Classical Journal 61 (17 de agosto de 2015): 70–90. http://dx.doi.org/10.1017/s175027051500007x.

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This paper investigates the visual recreation of Helen in the medium of cinema by using as case studies two runaway productions of the 1950s:L'amante di Paridestarring Hedy Lamarr andHelen of Troywith Rosanna Podestà in the title role. Examination of features such as costumes, makeup and hairstyle shows that in the former film Helen's representation is informed by and seeks to capitalize on Lamarr's status as a queen of glamour, equating Greek royalty with Hollywood royalty. The analysis of the second film explores further the homology between ancient and modern celebrity on screen and in extra-cinematic discourses, and shows how Podestà's stardom was built on and remained anchored in Helen's iconicity.

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Dzurisin, Daniel, James W. Vallance, Terrance M. Gerlach, Seth C. Moran y Stephen D. Malone. "Mount St. Helens reawakens". Eos, Transactions American Geophysical Union 86, n.º 3 (2005): 25. http://dx.doi.org/10.1029/2005eo030001.

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Lovett, R. A. "ECOLOGY:Mount St. Helens, Revisited". Science 288, n.º 5471 (2 de junio de 2000): 1578–79. http://dx.doi.org/10.1126/science.288.5471.1578.

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del Moral, R. y B. Magnússon. "Surtsey and Mount St. Helens: a comparison of early succession rates". Biogeosciences 11, n.º 7 (14 de abril de 2014): 2099–111. http://dx.doi.org/10.5194/bg-11-2099-2014.

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Abstract. Surtsey and Mount St. Helens are celebrated but very different volcanoes. Permanent plots allow for comparisons that reveal mechanisms that control succession and its rate and suggest general principles. We estimated rates from structure development, species composition using detrended correspondence analysis (DCA), changes in Euclidean distance (ED) of DCA vectors, and by principal components analysis (PCA) of DCA. On Surtsey, rates determined from DCA trajectory analyses decreased as follows: gull colony on lava with sand > gull colony on lava, no sand ≫ lava with sand > sand spit > block lava > tephra. On Mount St. Helens, plots on lahar deposits near woodlands were best developed. The succession rates of open meadows declined as follows: Lupinus-dominated pumice > protected ridge with Lupinus > other pumice and blasted sites > isolated lahar meadows > barren plain. Despite the prominent contrasts between the volcanoes, we found several common themes. Isolation restricted the number of colonists on Surtsey and to a lesser degree on Mount St. Helens. Nutrient input from outside the system was crucial. On Surtsey, seabirds fashioned very fertile substrates, while on Mount St. Helens wind brought a sparse nutrient rain, then Lupinus enhanced fertility to promote succession. Environmental stress limits succession in both cases. On Surtsey, bare lava, compacted tephra and infertile sands restrict development. On Mount St. Helens, exposure to wind and infertility slow succession.

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del Moral, R. y B. Magnússon. "Surtsey and Mount St. Helens: a comparison of early succession rates". Biogeosciences Discussions 10, n.º 12 (10 de diciembre de 2013): 19409–48. http://dx.doi.org/10.5194/bgd-10-19409-2013.

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Abstract. Surtsey and Mount St. Helens are celebrated, but very different volcanoes. Permanent plots allow comparisons that reveal mechanisms that control succession and its rate and suggest general principles. We estimated rates from structure development, species composition using detrended correspondence analysis (DCA), changes in Euclidean distance (ED) of DCA vectors and by principal components analysis (PCA) of DCA. On Surtsey, rates determined from DCA trajectory analyses decreased as follows: gull colony on lava with sand > gull colony on lava, no sand ≫ lava with sand > sand spit > block lava > tephra. On Mount St. Helens, plots on lahar deposits near woodlands were best developed. The succession rates of open meadows declined as follows: Lupinus-dominated pumice > protected ridge with Lupinus > other pumice and blasted sites > isolated lahar meadows > barren plain. Despite the prominent contrasts between the volcanoes, common themes were revealed. Isolation restricted the number of colonists on Surtsey and to a lesser degree on Mount St. Helens. Nutrient input from outside the system was crucial. On Surtsey, seabirds fashioned very fertile substrates, while on Mount St. Helens wind brought a sparse nutrient rain, then Lupinus enhanced fertility to promote succession. Environmental stress limits succession in both cases. On Surtsey, bare lava, compacted tephra and infertile sands restrict development. On Mount St. Helens, exposure to wind and infertility slow succession.

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Hedley, Iain y Ian Scott. "The St Helens Iron Foundry". Industrial Archaeology Review 21, n.º 1 (junio de 1999): 53–59. http://dx.doi.org/10.1179/iar.1999.21.1.53.

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Major, Jon J. "Mount St. Helens at 40". Science 368, n.º 6492 (14 de mayo de 2020): 704–5. http://dx.doi.org/10.1126/science.abb4120.

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Rowe, Michael C., John S. Pallister y Anita Grunder. "Mount St. Helens Petrology Workshop". Eos, Transactions American Geophysical Union 88, n.º 2 (9 de enero de 2007): 15. http://dx.doi.org/10.1029/2007eo020004.

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Tesis sobre el tema "Helens"

Baker, Cynthia Fay. "Phytoplankton in Mt. St. Helens Lakes, Washington". PDXScholar, 1995. https://pdxscholar.library.pdx.edu/open_access_etds/5017.

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Phytoplankton communities in fifteen lakes in the Mt. St. Helens area were surveyed to assess the abundance and species present. Eleven of the lakes were inside the blast zone of the 1980 eruption and four were located outside the blast zone as a comparison. The hypothesis is that lakes will cluster together based on the algal species present and that some algae will be correlated with certain environmental conditions. A cluster analysis was performed to determine if the lakes would group together based on algal abundance. There did not appear to be any distinct clustering among the study lakes, but this analysis did help to sort out some similarities of algal species present between lakes. It demonstrated that the lakes outside the blast zone were not functional as control lakes because they were very different from the blast-zone lakes. They had different assemblages of algae and their origin was so different from the blast-zone lakes that there was little overlap between them. The factor analysis was applied to determine the relationships between environmental variables and phytoplankton. The hypothesis is that certain algae are associated with each other and with identifiable environmental factors. Factor analysis should detect these patterns. The factors represent some condition in the environment but the analysis would be virtually meaningless unless these conditions can be recognized and the factors named. From the factor analysis alone, I could not name the factors but returned to the task after the canonical correlation analysis was performed. The canonical correlation analysis gave some clues to identify the environmental conditions that exert control on these algae. The most useful statistical technique used in this study was the canonical correlation analysis. This analysis is a useful tool in community ecology studies where species-environment relationships can be inferred from community composition and environmental data. The environmental data used was nutrient and light attenuation present at the time the phytoplankton samples were taken. From this analysis I summarized a list of algae and with what environmental conditions that they are associated. Trophic state categories were assigned to the lakes from a trophic state index based on phytoplankton biovolume.

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Spake, Phillip. "Geothermal Exploration North of Mount St. Helens". Master's thesis, Temple University Libraries, 2019. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/585881.

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Geology
M.S.
Active seismicity and volcanism north of Washington state’s Mount St. Helens provide key ingredients for hydrothermal circulation at depth. This broad zone of seismicity defines the St. Helens Seismic Zone, which extends well north of the volcanic edifice below where several faults and associated fractures in outcrop record repeated slip, dilation, and alteration indicative of localized fluid flow. Candidate reservoir rocks for a geothermal system include marine metasediments overlain by extrusive volcanics. The colocation of elements comprising a geothermal system at this location is tested here by analysis of the structures potentially hosting a reservoir, their relationship to the modern stress state, and temperature logs to a depth of 250 m. Outcrop mapping and borehole image log analysis down to 244 m document highly fractured volcaniclastic deposits and basalt flows. Intervening ash layers truncate the vertical extent of most structures. However, large strike slip faults with well-developed fault cores and associated high fracture density cross ash layers; vein filling and alternation of the adjacent host rock in these faults suggest they act as vertically extensive flow paths. These faults and associated fractures record repeated slip, dilation, and healing by various dolomite, quartz, and hematite, as well as clay alteration, indicative of long-lived, localized fluid flow. In addition, where these rocks are altered by igneous intrusion, they host high fracture density that facilitated heat transfer evidenced by associated hydrothermal alteration. Breakouts in image logs indicate the azimuth of SHmax in the shear zone is broadly consistent with both the GPS plate convergence velocity field as well as seismically active strike slip faults and strike-slip faults mapped in outcrop and borehole image logs. However, the local orientation of SHmax varies by position relative to the edifice and in some cases with depth along the borehole making a simple regional average SHmax azimuth misleading. Boreholes within the seismic zone display a wider variety of fracture attitudes than those outside the shear zone, potentially promoting permeability. Temperature profiles in these wells all indicate isothermal conditions at average groundwater temperatures, consistent with rapidly flowing water localized within fractures. Together, these results indicate that the area north of Mount Saint Helens generates and maintains porosity and permeability suggesting that conditions necessary for a geothermal system are present, although as yet no modern heat source or hydrothermal circulation was detected at shallow depth.
Temple University--Theses

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Schneider, Andrew Daniel 1982. "Constraints on Eruption Dynamics, Mount St. Helens, WA, 2004-2008". Thesis, University of Oregon, 2009. http://hdl.handle.net/1794/10026.

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xi, 114 p. : ill. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.
Different models have been proposed for the "drumbeat" earthquakes that accompanied recent eruptive behavior at Mount St. Helens. Debate continues as to whether seismicity is related to brittle failure during the extrusion of solid dacite spines or is the result of hydrothermal fluids interacting with a crack buried in the volcanic edifice. My model predictions of steady-state conduit flow confirm the strong control that degassing exerts on eruptive behavior. I discuss the necessary role of degassing for extruded material to attain the high density (low vesicularity) of the observed spine material and discuss the implications for generating seismicity. A brittle-failure source of seismicity requires that the gouge elastic properties accommodate some strain, since the magma compressibility in the upper conduit is too low to do so on its own. I also report on a novel method for generating high-resolution digital elevation models of fault surface textures.
Committee in Charge: Dr. Alan Rempel, Chair; Dr. Katharine Cashman; Dr. David Schmidt

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Berlo, Kim. "Time scales of magma evolution at Mount St. Helens". Thesis, University of Bristol, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.432346.

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Kelly, Valerie Jean. "Limnology of two new lakes, Mount St. Helens, WA". PDXScholar, 1991. https://pdxscholar.library.pdx.edu/open_access_etds/3576.

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Coldwater Lake and Castle Lake are two new lakes which were formed in the aftermath of the volcanic eruption of Mount St . Helens, WA in May, 1980. This research describes the limnology of these lakes ten years later, and includes physical, chemical, and biological parameters. The two lakes are compared and contrasted. Previous research on the eruption and its aftermath, as well as earlier studies of the lakes are described.

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Scharnberg, Larry Duane. "Zooplankton Community Structure in Lakes Near Mt. St. Helens, WA". PDXScholar, 1995. https://pdxscholar.library.pdx.edu/open_access_etds/5050.

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Eighteen lakes around Mt. St. Helens (MSH) were sampled for zooplankton from September '92 until September '94. Samples were enumerated and identified to the species level in most cases. Standard deviation and t-tests were performed to determine the precision of enumeration methods and replication of duplicate tows. Palatability indexes based upon predator preferences were developed and coupled with length-frequency analyses as indicators of predation pressure. The weighted means of the summer samples were then subjected to cluster analysis in an attempt to categorize lakes with respect to zooplankton community structure. Lastly, the community compositions and abundances of MSH lakes were compared to those in lakes on Mt. Rainier and Mt. Hood in an attempt to assess recovery of MSH lakes from the 1980 eruption. Results of analyses indicate the presence of three distinct groups of lakes: 1) A group of lakes with heavy predation resulting in simplified zooplankton communities dominated by Keratella, Ke/licottia, and sometimes cyclopoid species. Predation in these instances can be attributed to extremely high fish or Chaoborus abundance. 2) A second group of lakes characterized by great depth, high transparency, significant abundances of Diaptomus kenai, and moderate to light fish predation. These lakes support balanced zooplankton communities with substantial proportions of Daphnid and calanoid specimens attaining large size. Significant indications of size-specific niche differentiation among the cladocerans are notably absent from these first two groups. 3) A third group consists of lakes which appear to be more productive than the other two groups. This group has higher biovolumes of zooplankton in general, coexistence of several different sized cladoceran species, the highest diversity indices of all the lakes sampled, and moderate predation as indicated by length-frequency analysis. Two conclusions are drawn from the data. First, it appears that predation and primary productivity are both significant factors affecting the abundance and composition of MSH zooplankton communities. Additionally, these data document a significant overlap in zooplankton species in lakes near Mt. Rainier and Mt. Hood, suggesting that the zooplankton communities in lakes around MSH have recovered from the effects of the 1980 eruption.

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Olson, Keith Vinton. "Inventory and Initiation Zone Characterization of Debris Flows on Mount St. Helens, Washington Initiated during a Major Storm Event in November, 2006". PDXScholar, 2012. https://pdxscholar.library.pdx.edu/open_access_etds/929.

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The heavy precipitation event of November 3-8, 2006 dropped over 60 cm of rain onto the bare southern slopes of Mount St. Helens and generated debris flows in eight of the sixteen drainages outside the 1980 debris avalanche zone. Debris flows occurred on the upper catchments of the Muddy River, Shoestring Glacier, Pine Creek, June Lake, Butte Camp Dome, Blue Lake, Sheep Creek, and South Fork Toutle River. Debris flows were clustered on the west and south-east sides of the mountain. Of the eight debris flows, three were initiated by landslides, while five were initiated by headward or channel erosion. Six debris flows were initiated in deposits mapped as Holocene volcaniclastic deposits, while two were in 1980 pyroclastics on andesite flows. The largest (~975,000 m2) and longest (~8,900 m) debris flow was initiated by landslides in the upper South Fork Toutle River Drainage. The average debris flow initiation zone elevation was 1,750 m, with clusters around 1,700 m and 2,000 m elevation. The lower cluster is associated with basins that host modern or historic glaciers, while the upper is possibly associated with recent pyroclastic deposits. Upper drainages with debris flows averaged 41% slopes steeper than 33 degrees, while those without debris flows averaged 34%. The upper basins with debris flows averaged 6% snow and ice cover, 21% consolidated bedrock, and 74% unconsolidated deposits. Basins without debris flows averaged 3% snow and ice cover, 27% bedrock, and 67% unconsolidated deposits. Drainages with debris flows averaged an 89% loss of glacier area between 1998 and 2009, while those without debris flows lost 68%. Further comparing glacier coverage during that period found that only five of ten glaciers still existed in 2009. On average, the glaciers had reduced in area by 67%, decreased in length by 36%, and retreated by an average of 471 m during that period. Basin attributes were measured or calculated in order to construct a predictive debris flow model based on that of Pirot (2010) using multiple logistic regression. The most significant factors were the percentage of slopes steeper than 33 degrees, unconsolidated deposits in the upper basin, and average annual rainfall. These factors predicted the 2006 debris flows with an accuracy of 94% in a debris flow susceptibility map for Mount St. Helens.

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Schneider, Andrew Daniel. "Constraints on eruption dynamics, Mount St. Helens, WA, 2004-2008 /". Connect to title online (Scholars' Bank), 2009. http://hdl.handle.net/1794/10026.

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Menting, Victor Lee. "The Biogeochemistry of Lakes in the Mount St. Helens Blast Zone". PDXScholar, 1995. https://pdxscholar.library.pdx.edu/open_access_etds/4927.

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Dilution and ash weathering are the most important processes controlling the ion chemistry of lakes in the Mount St. Helens blast zone. Gibbs' models indicated total dissolved solids were decreasing as a result of dilution from high precipitation and runoff and the lakes plot in the rock weathering dominated region. Plots of theoretical dilution curves indicated a decline in ion concentrations as a result of dilution. Ion concentrations followed the exponential decline predicted by the dilution curve, although concentrations were higher than predicted by the curve. Increased concentrations were a result of the rapid weathering of ash in basins and on lake bottoms. Rapid weathering of ash in lake watersheds and on lake bottoms continues to influence the ionic concentrations of the lakes. In general, sodium and potassium have declined at a much faster rate than calcium or magnesium. Slower relative declines in concentrations of calcium and magnesium were a result of more rapid rate of leaching of calcium and magnesium from the ash. Ash in the watersheds will continue to be a major contributor to the overall ion chemistry of the lakes until such time as the watersheds are stabilized by vegetation and a permanent soil layer. Ash on lake bottoms will be unavailable as sources of ionic constituents when it becomes buried within deep sediment layers. Ion concentrations observed in study lakes affected by the eruption were similar to those observed in control lakes with few exceptions. Although ion concentrations in affected lakes have declined to values observed in control lakes, most were at higher concentrations than the regional means. Several functions of the ion chemistry were used to correlate planktonic community structure to lake ion chemistry. The data suggested ion chemistry was not influencing biological community structures as no patterns emerged. Analysis of diatom populations with respect to monovalent:divalent cation ratios showed no correlation.

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Williams, Trevor David. "Surviving Catastrophe: Resource Allocation and Plant Interactions Among the Mosses of Mount St. Helens Volcano". PDXScholar, 2016. https://pdxscholar.library.pdx.edu/open_access_etds/3373.

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Mosses are some of the first colonizers to disturbed sites, yet their roles in early plant community structuring are not well understood. The primary succession zones of volcanoes provide opportunities to conduct natural experiments into how mosses contribute to early plant community formation, as well as how the unique environments found in such zones affect plant traits, particularly those associated with stress tolerance. Though plant community changes have been well-documented since Mount St. Helens (MSH) volcano erupted in 1980, the volcano's moss assemblages, their influence on other plants, and their potential roles in chemical-mediated competition and biogeochemical cycling have garnered little attention. Using a natural stress gradient from primary to secondary succession zones on MSH, and in control and nutrient manipulated test plots, I sought to elucidate how populations of three dominant moss species, Polytrichum juniperinum, Ceratodon purpureus, and Racomitrium canescens, respond to abiotic stress, as well as to provide life history and interaction data on establishment stages of these stress tolerant taxa. I first analyzed possible tradeoffs in survival strategies of four moss communities in test plots along an abiotic stress gradient. In P. juniperinum, seta specific density (mg/mm) increased significantly in response to nitrogen (N) addition. Differences in both vegetative and sexual reproductive morphological measurements were dependent on site and did not correlate with abiotic stress. In C. purpureus, the percentage of total spores germinated increased with N addition. Site dependent responses in nutrient allocation to vegetative and reproductive structures may be a result of phenotypic plasticity alone or may be a result of local adaptation. In mosses adapted to environmental stress, the allocation of nitrogen must be balanced between growth and survival. Efficient nitrogen uptake confers a competitive advantage if allocated to the higher dispersal of quickly germinating spores. Second, my results show the moss R. canescens may be able to inhibit the germination rate of co-occurring moss spores when spores were germinated in moss gametophyte infusions. R. canescens may also inhibit the germination of the co-occurring vascular plant Lupinus lepidus when seeds are germinated within intact moss patches. By uncovering chemical-mediated interactions between mosses on the germination and initial growth of neighboring mosses and vascular plants we can gain a better understanding of the mechanisms stress tolerant plants may use to limit resource competition. Such advantages offer insight into how mosses effectively colonize and affect primary succession landscapes.

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Libros sobre el tema "Helens"

Maibach, Peter. Helens Bild: Roman. Bern: Astrosmarie-Verlag, 2001.

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L, Van Camp Mary, ed. Mount St. Helens. Las Vegas, Nev: KC Publications, 1985.

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Corcoran, Thom. Mount St. Helens. Las Vegas, Nev: KC Publications, 2005.

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Mount St. Helens. Charleston, South Carolina: Arcadia Publishing, 2013.

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Holtz, Ariel. Mt. St. Helens interpreter. Bellingham, WA: Huxley College of Environmental Studies, Western Washington University, 2001.

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Giesen, Jeffrey. The Mt. St. Helens experience. Bellingham, WA: Huxley College of Environmental Studies, Western Washington University, 1995.

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Sheen, Frank. St. Helens in the making. Coventry: Jones-Sands, 1993.

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Miller, Patrick J. Mount St. Helens elk herd. Olympia, WA: Washington Dept. of Fish and Wildlife, Wildlife Management Program, 2006.

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Sheen, Frank. St. Helens in the making. Exhall: Jones-Sands, 1994.

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Reddy, Linnea M. The Mount Saint Helens experience. Bellingham, Wash: Huxley College of the Environment, 2004.

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Capítulos de libros sobre el tema "Helens"

Newhall, Chris, Peter Frenzen y Carolyn Driedger. "Mount St. Helens, Washington, USA". En Volcanic Tourist Destinations, 201–8. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-16191-9_15.

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Allen, Michael F., Matthew R. O’Neill, Charles M. Crisafulli y James A. MacMahon. "Succession and Mycorrhizae on Mount St. Helens". En Ecological Responses at Mount St. Helens: Revisited 35 years after the 1980 Eruption, 199–215. New York, NY: Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7451-1_11.

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del Moral, Roger y Jonathan H. Titus. "Primary Succession on Mount St. Helens: Rates, Determinism, and Alternative States". En Ecological Responses at Mount St. Helens: Revisited 35 years after the 1980 Eruption, 127–48. New York, NY: Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7451-1_7.

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Frenzen, Peter M., Keith S. Hadley, Jon J. Major, Marc H. Weber, Jerry F. Franklin, Jasper H. Hardison y Sharon M. Stanton. "Geomorphic Change and Vegetation Development on the Muddy River Mudflow Deposit". En Ecological Responses to the 1980 Eruption of Mount St. Helens, 75–91. New York, NY: Springer New York, 2005. http://dx.doi.org/10.1007/0-387-28150-9_6.

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Nelson, Peter R., Bruce McCune, Tim Wheeler, Linda H. Geiser y Charles M. Crisafulli. "Lichen Community Development Along a Volcanic Disturbance Gradient at Mount St. Helens". En Ecological Responses at Mount St. Helens: Revisited 35 years after the 1980 Eruption, 185–98. New York, NY: Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7451-1_10.

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Lindell, Michael K. y Ronald W. Perry. "Risk Area Residents’ Changing Perceptions of Volcano Hazard AT MT. ST. Helens". En Prediction and Perception of Natural Hazards, 159–66. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-015-8190-5_19.

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Schmincke, Hans-Ulrich. "Strombolian, Hawaiian and Plinian Eruptions and the Mount St. Helens Eruption 1980". En Volcanism, 155–76. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-18952-4_10.

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Swanson, D. A. y R. T. Holcomb. "Regularities in Growth of the Mount St. Helens Dacite Dome, 1980–1986". En IAVCEI Proceedings in Volcanology, 3–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-74379-5_1.

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Swanson, Frederick J. y Charles M. Crisafulli. "Volcano Ecology: State of the Field and Contributions of Mount St. Helens Research". En Ecological Responses at Mount St. Helens: Revisited 35 years after the 1980 Eruption, 305–23. New York, NY: Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7451-1_16.

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Anderson, S. W. y J. H. Fink. "The Development and Distribution of Surface Textures at the Mount St. Helens Dome". En IAVCEI Proceedings in Volcanology, 25–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-74379-5_2.

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Actas de conferencias sobre el tema "Helens"

Chadwick, William W. "VOLCANIC GEODESY: FROM MOUNT ST. HELENS TO AXIAL SEAMOUNT". En GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-284305.

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Wallace, Abraham W., Erin Wirth, Caroline Eakin, Carl Ulberg, Kenneth C. Creager y Geoff Abers. "SHEAR WAVE SPLITTING OBSERVATIONS BENEATH MOUNT ST. HELENS VOLCANO, WASHINGTON". En GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-306808.

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Dvoracek, Doug, Katharine Napora, Kathy M. Loftis, Corbin L. Kling y Robert J. Speakman. "A DENDROCHEMICAL STUDY OF THE 1980 ERUPTION OF MOUNT ST. HELENS". En GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-287861.

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Nezat, Carmen, Sara Kimmig, Tara Blackman y Charlie Crisafulli. "Chemical Weathering in Streams in the Mount St Helens 1980 Blast Area". En Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.1918.

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O'Dowd, Conor L., Katherine Ryker y Christine M. Clark. "COMPARATIVE ANALYSIS OF ASH DEPOSITS IN NEW ZEALAND AND MOUNT ST. HELENS". En GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-287618.

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Gase*, Andrew. "GPR imaging of pyroclastic density current deposits at Mount St. Helens, Washington". En Near-Surface Asia Pacific Conference, Waikoloa, Hawaii, 7-10 July 2015. Society of Exploration Geophysicists, Australian Society of Exploration Geophysicists, Chinese Geophysical Society, Korean Society of Earth and Exploration Geophysicists, and Society of Exploration Geophysicists of Japan, 2015. http://dx.doi.org/10.1190/nsapc2015-033.

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Sweeney, Kristin E., Jon J. Major, Gordon Grant y A. R. Mosbrucker. "MULTI-DECADE HYDROGEOMORPHIC EVOLUTION OF THE SPIRIT LAKE BLOCKAGE, MOUNT ST. HELENS, WA". En 115th Annual GSA Cordilleran Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019cd-329481.

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Garcia, M. J. y P. Boulanger. "Low Altitude Wind Simulation over Mount Saint Helens Using NASA SRTM Digital Terrain Model". En Third International Symposium on 3D Data Processing, Visualization, and Transmission (3DPVT'06). IEEE, 2006. http://dx.doi.org/10.1109/3dpvt.2006.92.

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Cladouhos, Trenton T., Michael Swyer, Carl Ulberg, Kayla Crosby, Corina Forson, Alexander N. Steely y Nicholas C. Davatzes. "GEOLOGIC, GEOPHYSICAL, AND GEOTHERMAL CHARACTERISTICS OF ST. HELENS SHEAR ZONE: RESULTS FROM WASHINGTON STATE PLAY FAIRWAY ANALYSIS". En GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-307572.

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Smith, Diane R. y William P. Leeman. "BASALTIC LAVAS OF MOUNT ST. HELENS: EVIDENCE FOR DIVERSE MANTLE SOURCES AND INPUTS FROM MORE EVOLVED MAGMAS". En GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-302859.

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Informes sobre el tema "Helens"

ARMY ENGINEER DISTRICT PORTLAND OR. Mount St. Helens, Washington Decision Document. Fort Belvoir, VA: Defense Technical Information Center, octubre de 1985. http://dx.doi.org/10.21236/ada637017.

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Baker, Cynthia. Phytoplankton in Mt. St. Helens Lakes, Washington. Portland State University Library, enero de 2000. http://dx.doi.org/10.15760/etd.6893.

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BIEDENHARN GROUP LLC VICKSBURG MS. Mount St. Helens Future Expected Deposition Scenario (FEDS). Fort Belvoir, VA: Defense Technical Information Center, abril de 2011. http://dx.doi.org/10.21236/ada581332.

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Brown, Edward. Tiltmeter analysis of Mount St. Helens, Skamania County, Washington. Portland State University Library, enero de 2000. http://dx.doi.org/10.15760/etd.5241.

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Kelly, Valerie. Limnology of two new lakes, Mount St. Helens, WA. Portland State University Library, enero de 2000. http://dx.doi.org/10.15760/etd.5460.

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Scharnberg, Larry. Zooplankton Community Structure in Lakes Near Mt. St. Helens, WA. Portland State University Library, enero de 2000. http://dx.doi.org/10.15760/etd.6926.

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Menting, Victor. The Biogeochemistry of Lakes in the Mount St. Helens Blast Zone. Portland State University Library, enero de 2000. http://dx.doi.org/10.15760/etd.6803.

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Carpenter, Kurt. Indicators of Nutrient Limited Plankton Growth in Lakes Near Mount Saint Helens, Washington. Portland State University Library, enero de 2000. http://dx.doi.org/10.15760/etd.6750.

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Wickham, David. Calculating the Volume of the May 18, 1980 Eruption of Mount St. Helens. Portland State University, enero de 2009. http://dx.doi.org/10.15760/mem.29.

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Murphy, Shirley. Coping with stress following a natural disaster: the volcanic eruption of Mt. St. Helens. Portland State University Library, enero de 2000. http://dx.doi.org/10.15760/etd.403.

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