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Dissertations / Theses on the topic 'Droughts'

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1

Quiring, Steven M. "Developing a real-time agricultural drought monitoring system for Delaware." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 2.86 Mb , 207 p, 2005. http://wwwlib.umi.com/dissertations/fullcit/3181867.

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2

Guinan, Patrick E. "Seasonally adjusted index for projecting agricultural drought /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p3164510.

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3

Bellamy, John Thomas. "Drought frequency and risk analysis in the Upper Green River Basin, Wyoming." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1798480881&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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4

Dube, Carolina. "The impact of Zimbabwe's drought policy on Sontala rural community in Matabeleland South Province /." Link to the online version, 2008. http://hdl.handle.net/10019/1768.

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5

Chbouki, Nabil. "Spatio-temporal characteristics of drought as inferred from tree-ring data in Morocco." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/185851.

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Long-term tree-ring series of Cedrus atlantica have been utilized to reconstruct and characterize past drought occurrences in Morocco. Based on the close relationship between tree growth and rainfall variations, the best tree-ring indicator of drought has been found to be, x₀ = μ -.75σ, with μ and σ the mean and standard deviation of the tree-ring series. In Morocco, drought is a short event lasting 1.7 years on average with 84% of the events lasting less than 2 years. The average maximum duration exceeds 4 years. It is associated with a 40% deficit about normal moisture availability which can
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6

Kebede, Yohannes. "Economic evaluation of post-drought recovery agricultural project : the case of Tegulet and Bulga District, Shoa Province, Ethiopia." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63894.

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7

Singh, Kamal. "Drought, relief and rural communities : special report no. 9." Association for Rural Advancement (AFRA), 1993. http://hdl.handle.net/10962/68651.

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The Association for Rural Advancement (AFRA) has run a Drought Project since October 1992. The project's primary focus was to monitor drought conditions in the AFRA's operational area and to assist communities to access relief through providing them with relevant information and helping them to submit proposals to relief agencies. In attempting to do this, it became clear that the effects of drought on rural black communities was not a well understood phenomenon. We also found that relief strategies were informed more by economic, agricultural and meteorological criteria than social ones. This
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8

Rudebeck, Hugo. "HYDROLOGICAL DROUGHTS IN SWEDEN: Mapping of historical droughts and identificationof primary driving climate variables andcatchment properties." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-350520.

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This study investigated the relationship between hydrological, and to some extent, meteorological droughts, and meteorological variables and catchment characteristics in 235 Swedish catchments between 1983 and 2013. This was done in order to investigate what factors affect the drought sensitivity in Swedish catchments and to map the occurrence of droughts in Sweden between 1983 and 2013. There have been studies about which meteorological phenomena and catchment characteristics that promote hydrological droughts, but for Sweden this is relatively unexplored. To investigate droughts during the s
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9

Ren, Xiaomeng, and University of Lethbridge Faculty of Arts and Science. "Agricultural vulnerability to drought in southern Alberta : a quantitative assessment." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2007, 2007. http://hdl.handle.net/10133/398.

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Agricultural vulnerability is generally referred to as the degree to which agricultural systems are likely to experience harm due to a stress. In this study, an existing analytical method to quantify vulnerability was adopted to assess the magnitude as well as the spatial pattern of agricultural vulnerability to varying drought conditions in Southern Alberta. Based on the farm reported data and remote sensing imagery, two empirical approaches were developed to implement vulnerability assessment in Southern Alberta at the quarter-section and 30 meter by 30 meter pixel levels. Cereal crop yield
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10

Stockton, Charles W., David M. Meko, and William R. Boggess. "Drought History and Reconstructions from Tree Rings." Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1989. http://hdl.handle.net/10150/302684.

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11

Ahmadi, Behzad. "On the Drought Recovery and Resiliency: How Terrestrial and Riverine Ecosystems Recover from Agricultural and Hydrological Droughts." PDXScholar, 2019. https://pdxscholar.library.pdx.edu/open_access_etds/4834.

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Climate extremes, in particular droughts are significant driving forces towards riverine and terrestrial ecosystems disturbance. Drought impacts on stream ecosystems include losses that can either be direct (e.g. destruction of habitat for aquatic species) or indirect (e.g. deterioration of water quality, soil quality, and increased chance of wildfires). This study investigates hydrological and agricultural droughts and their recovery durations. For the riverine ecosystems, this study combines hydrologic drought and water quality changes during droughts and represents a multi-stage framework t
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12

Watson, Thomas J. "Wind River Basin, Wyoming streamflow reconstructions." Laramie, Wyo. : University of Wyoming, 2007. http://proquest.umi.com/pqdweb?did=1400958981&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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13

Yu, Rita Man Sze. "European droughts under climate change : projections and uncertainties." Thesis, University of East Anglia, 2013. https://ueaeprints.uea.ac.uk/47923/.

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Droughts are one of the most damaging natural hazards, and anthropogenic climate change has and will continue to alter their characteristics. Better understanding of changes in drought characteristics under potential future climates is vital for managing drought risks and impacts, yet projections are very uncertain. This thesis examines the effects of climate change on European drought characteristics through a multi-scenario and multimodel approach. It explores the uncertainty associated with emission scenarios, global and spatial climate projections, and with the identification and character
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14

Rahiz, Muhammad. "Droughts in future climate change in the UK." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:cde09ece-1da9-4374-964e-ebea462bc956.

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This thesis seeks to investigate the changes in the characteristics of 20th and 21st century meteorological droughts in the UK to address the following lines of inquiry: 1) How credible are rainfall-based indices in representing hydrological droughts, 2) How coherent are droughts?, 3) Can alternative method of analysis provide new (or additional) information on the uncertainties in climate models?, and 4) Will future drought characteristics change?. Key results, respectively, are summarized as follows: • The drought severity index (DSI), can be considered a good proxy for assessing hydrologica
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15

Ujeneza, Eva Liliane. "Simulating the characteristics of droughts in Southern Africa." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/9102.

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Includes bibliographical references.<br>Drought is widely considered as one of the most devastating natural disasters in the world. In particular, drought is a big threat in Southern Africa because the economy of most of the population in the region is based on rain-fed agriculture. Previous studies have projected that global warming may enhance the frequency and intensity of droughts over Southern Africa in the future. However, the credibility of this projection depends on the ability of the global and regional climate models (GCMs and RCMs) in simulating the characteristics of drought. This
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16

Boushaki, Farid Ishak. "Statistical relationship between drought indices and NDVI at regional scale." Thesis, The University of Arizona, 2002. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0192_sip1_w.pdf&type=application/pdf.

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17

Henderson, Carol Elaine. "Life in the land of death famine and drought in arid Western Rajasthan /." [S.l. : s.n.], 1988. http://catalog.hathitrust.org/api/volumes/oclc/53916457.html.

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18

Tarhule, Aondover Augustine. "Droughts, rainfall and rural water supply in northern Nigeria." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ30174.pdf.

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19

Tully, Craig David. "Holocene Mega-Droughts in the Central Atacama Desert, Chile." Miami University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1272312883.

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20

Driver, Lucas J. "Dynamics of Stream Fish Metacommunities in Response to Drought and Re-connectivity." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc804923/.

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This dissertation investigates the spatio-temporal dynamics of intermittent stream fish metacommunities in response drought-induced fragmentation and re-connectivity using both field and experimental approaches. A detailed field study was conducted in two streams and included pre-drought, drought, and post-drought hydrological periods. Fish assemblages and metacommunity structure responded strongly to changes in hydrological conditions with dramatic declines in species richness and abundance during prolonged drought. Return of stream flows resulted in a trend toward recovery but ultimately ass
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21

Yang, Wen. "Drought Analysis under Climate Change by Application of Drought Indices and Copulas." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/716.

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Drought is a recurrent extreme climate event with tremendous hazard for every specter of natural environment and human lives. Drought analysis usually involves characterizing drought severity, duration and intensity. Similar to most of the hydrological problems, such characteristic variables are usually not independent. Copula, as a model of multivariate distribution, widely used in finance, actuarial analysis, has won increasingly popularity in hydrological study. Here, the study has two major focuses: (1) fit drought characteristics from Streamflow Drought Index (SDI) or Standardized Runoff
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22

Schmitt, Catherine. "The Effects of the 2001-2002 Drought on Maine Surface Water Supplies." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/SchmittC2003.pdf.

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23

Cloud, Kimberly C. "Changes and trends in streamflow during floods and droughts in the urbanizing Christina River Basin." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 131 p, 2007. http://proquest.umi.com/pqdweb?did=1397904211&sid=9&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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24

Barnett, Faires Anthony. "Upper Green River Basin streamflow reconstructions and drought variability." Laramie, Wyo. : University of Wyoming, 2007. http://proquest.umi.com/pqdweb?did=1445046271&sid=9&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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25

Follum, Michael Lee. "Upper Green River Basin precipitation reconstructions and drought analysis." Laramie, Wyo. : University of Wyoming, 2009. http://proquest.umi.com/pqdweb?did=1798481411&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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26

Guion, Antoine. "Droughts and heatwaves in the Western Mediterranean, impact on ozone pollution." Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS056.

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Sécheresses et vagues de chaleur sont des événements extrêmes capables d’impacter à la fois la végétation et la chimie de l’atmosphère, notamment par l’intermédiaire d’interactions entre la surface et la troposphère. L’objectif de cette thèse est d’évaluer leurs effets sur la biomasse, l’activité des incendies et la pollution à l’ozone dans l’Ouest Méditerranéen. Cette étude se base principalement sur des modèles numériques régionaux de la surface terrestre (hydrologie et végétation) et de l'atmosphère (météorologie et chimie atmosphérique). En complément, plusieurs jeux de données d’observati
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27

Isarangkool, Na Ayutthaya Supat. "Change of whole-tree transpiration of mature Hevea brasiliensis under soil and atmospheric droughts : analyze in intermittent and seasonal droughts under the framework of the hydraulic limitation hypothesis." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2010. http://tel.archives-ouvertes.fr/tel-00719009.

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Les variations de transpiration totale sous contraintes hydriques, à la fois atmosphérique et édaphique, sont étudiées pour des arbres matures d'Hevea brasiliensis (clone RRIM600) dans une zone limitée en eau du Nord-Est de la Thaïlande. Les variations sont analysées et comparées entre une sécheresse transitoire en saison des pluies et la sécheresse saisonnière caractérisée par des fluctuations de la surface foliaire (sénescence foliaire, chute des feuilles and re-feuillaison) et de la croissance racinaire en profondeur. Les réponses physiologiques sont analysées dans le cadre d'un modèle hydr
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28

Isarangkool, Na Ayutthaya Supat. "Change of whole-tree transpiration of mature Hevea brasiliensis under soil and atmospheric droughts : analyze in intermittent and seasonal droughts under the framework of the hydraulic limitation hypothesis." Phd thesis, Clermont-Ferrand 2, 2010. http://www.theses.fr/2010CLF22044.

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Les variations de transpiration totale sous contraintes hydriques, à la fois atmosphérique et édaphique, sont étudiées pour des arbres matures d'Hevea Brasiliensis (clone RRIM600) dans une zone limitée en eau du Nord-Est de la Thaïlande. Les variations sont analysées et comparées entre une sécheresse transitoire en saisons des pluies et la sécheresse saisonière caractérisée par des fluctuations de la surface foliaire (sénescence foliaire, chute des feuilles et re-feuillaison) et de la croissance racinaire en profondeur
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29

Cordero, Mera Andrea Estefania. "Reservoir influences on droughts and floods characteristics in the Piedmont Region, Italy." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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Among the consequences of global climate change, the alteration of hydrological cycles is one of the most worrisome, since it can result in an intensification of the characteristics of extreme events. In the Anthropocene era, human activities can further increase the frequency and magnitude of floods and droughts. Therefore, it is of utmost importance to analyse the influence of anthropogenic activities on the magnitude and frequency of hydrologic extremes. In the present work, Piedmont region (Italy) was taken as a case study. The work analyses 15 pairs of regulated up- and downstream catchme
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30

Villalobos, Hitos Yéssica Montsserrat. "Shedding Light on Droughts: Light in Art Installations as an Awareness Tool." Thesis, KTH, Ljusdesign, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280084.

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The master thesis studies the value of light art installations as a tool to raise awareness, communicate messages,inspire people and create social engagement to take action and deal with important issues. Additionally, it researchesthe lighting characteristics that have to be considered in order to create a high emotional response. Three case studieson light art installations tackling environmental issues were selected to understand the tools that makes themsuccessful. The final result of the thesis is the design proposal for a site specific light art installation to raise awarenesson droughts
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31

Moore, David L. "Reservoir management during drought an expert system approach." Ohio : Ohio University, 1993. http://www.ohiolink.edu/etd/view.cgi?ohiou1175718241.

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32

Konrad, Christopher P. "The frequency and extent of hydrologic disturbances in streams in the Puget Lowland, Washington /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/10187.

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33

Karlina. "ASSESSMENT OF HYDRO-METEOROLOGICAL DROUGHTS RELATED TO ENSO IN LOMBOK AND SUMATRA ISLANDS, INDONESIA." Kyoto University, 2018. http://hdl.handle.net/2433/231991.

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付記する学位プログラム名: グローバル生存学大学院連携プログラム<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第21058号<br>工博第4422号<br>新制||工||1687(附属図書館)<br>京都大学大学院工学研究科社会基盤工学専攻<br>(主査)教授 寶 馨, 教授 堀 智晴, 准教授 佐山 敬洋<br>学位規則第4条第1項該当
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34

Zink, Matthias [Verfasser]. "Soil Moisture Droughts in Germany: Retrospective Analysis, Parametric Uncertainty, and Monitoring / Matthias Zink." München : Verlag Dr. Hut, 2016. http://d-nb.info/1122524412/34.

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35

Nguvava, Mariam Melikizedek. "Understanding the characteristics of droughts over Eastern Africa in past and future climates." Doctoral thesis, Faculty of Science, 2020. http://hdl.handle.net/11427/32890.

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Drought poses a threat to socio-economic activities across eastern Africa and its river basins. While there are indications that global warming may continue to enhance evaporation and intensify droughts at all scales, most drought projections over eastern Africa are based on rainfall alone and are limited to meteorological droughts. The present study combines rainfall and Potential Evapotranspiration (PET) to examine the characteristics of meteorological and hydrological droughts in present and future climates at the regional and river basin scales. To accomplish that we have applied five obje
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36

Gore, Michelle Jacqueline. "Understanding the impacts of ENSO patterns on droughts over southern Africa using SPEEDY." Master's thesis, Faculty of Science, 2019. https://hdl.handle.net/11427/31879.

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The El Niño Southern Oscillation (ENSO) is a major driver of southern Africa droughts, but the nonlinearity of ENSO variation inhibits accurate prediction of droughts. While studies have identified multiple patterns of ENSO, most drought predictions over southern Africa are still based on only two ENSO patterns. This study examines the relationship between southern African droughts and eight ENSO patterns: four El Niño SST conditions (EN1 - EN4) and four La Niña SST conditions (LN1 - LN4). In this study we analyzed multi-forcing ensemble simulations from SPEEDY (a general circulation model fro
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37

Lawal, Shakirudeen Abimbola. "The response of southern African vegetation to droughts in past and future climates." Doctoral thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29327.

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Drought and climate change pose a threat to southern African vegetation. This study examines the response of southern African vegetation to drought in both past and future climates. Multiyear and multi-simulation datasets from three dynamic global vegetation models (DGVMs), namely, Community Land Model version 4 (CLM4), Community Land Model version 4 with Variable Infiltration Capacity hydrology (CLM4VIC), and Organising Carbon and Hydrology in Dynamic Ecosystems designed by Laboratoire des Sciences du Climat et de l’Environnement (ORCHIDEE-LSCE). These three DGVMs and the Community Earth Syst
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38

Kleopa, Xenia A. "Optimal reservoir operation for drought management." Ohio : Ohio University, 1990. http://www.ohiolink.edu/etd/view.cgi?ohiou1183650664.

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39

Kangas, Ryan S. "Characteristics of U.S. drought and pluvials from a high-resolution dataset." abstract and full text PDF (free order & download UNR users only), 2005. 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:1433407.

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40

Foster, Nichole Michelle. "Drought evaluation using tree-ring based reconstructed streamflows for rivers in New Mexico." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2008. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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41

Ponnamaneni, Padmaja. "Economically sustainable cattle production practices during multiple years of drought and differing price cycles." Laramie, Wyo. : University of Wyoming, 2007. http://proquest.umi.com/pqdweb?did=1445044271&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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42

Burton, C. M. "Management of the River Murray during periods of extended drought /." Title page, contents and abstract only, 1988. http://web4.library.adelaide.edu.au/theses/09ENS/09ensb974.pdf.

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43

Stenson, Jennifer R. "A study of hydrologic drought using streamflow as an indicator." Ohio : Ohio University, 1989. http://www.ohiolink.edu/etd/view.cgi?ohiou1182521390.

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44

De, la Barreda Bautista Betsabe. "Vegetation sensitivity to droughts (1982-2011) through remote sensing in the Yucatan Peninsula, Mexico." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/39822/.

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Ecosystems undergo permanent alteration and degradation as a result of the pressure exerted upon them by anthropogenic activities and natural causes. Amongst the natural causes, drought can have considerable impacts on vegetation productivity; these impacts include biomass reduction and changes in vegetation cycles, growth, and vitality. Such impacts have important implications for society, and understanding the impacts of drought in natural systems will help minimise vulnerability to it. The Yucatan Peninsula is a vulnerable area in climate change scenarios, where increased intensity and freq
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45

Mason, Nicole Marie. "A test of the new variant famine hypothesis panel survey evidence from Zambia /." Diss., Connect to online resource - MSU authorized users, 2008.

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46

Coats, Lamar S. "The Influence of Tropical Cyclones on Droughts and Warm Season Precipitation in Tennessee and Kentucky." TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1567.

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The Southeast United States during summer and fall is often affected by droughts and tropical cyclones. Both phenomena rank among the most expensive of natural hazards, although droughts are not as feared by the public as hurricanes. When a tropical cyclone causes a pendulum swing from drought to wet conditions, it is known as a “drought-busting tropical cyclone.” The majority of the research related to drought busting tropical cyclones investigates only the storms during their tropical cyclone phase, which covers the southeastern states that have boundaries adjacent to the Atlantic Ocean. An
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47

Meque, Arlindo Oliva. "Investigating the link between southern African droughts and global atmospheric teleconnections using regional climate models." Doctoral thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/16686.

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Includes bibliographical references<br>Drought is one of the natural hazards that threaten the economy of many nations, especially in Southern Africa, where many socio-economic activities depend on rain-fed agriculture. This study evaluates the capability of Regional Climate Models (RCMs) in simulating the Southern African droughts. It uses the Standardized Precipitation-Evapotranspiration Index (SPEI, computed using rainfall and temperature data) to identify 3-month droughts over Southern Africa, and compares the observed and simulated drought patterns. The observation data are from the Clima
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48

Hassan, Rasha. "A science-policy assessment of the effect of severe droughts in Syria: A quasi-Bayesian analysis." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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The management of prolonged droughts as an extreme event with low probability in Syria is challenging and different from developed countries. Syria is particularly vulnerable to severe drought events due to its complicated characteristics including water scarcity, geographical location, population size, and continuing war conditions. These facts emphasize the urgency to act before a drought occurs. The study of the available literature about this topic showed the imperfect characteristics of the relevant knowledge and information. They are heterogeneous, scarce, and uncertainty-laden. This si
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49

Parsons, Katherine. "Not all droughts are equal: understanding the climate drivers of wind erosion (ENSO, SAM and IOD)." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/373953.

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Wind erosion is recognised as an important issue globally. It is of importance in Australia due to a large proportion of the continent being classed as arid to semi-arid. With increases in land use and projected increases in the frequency and intensity of drought periods in Australia, wind erosion may be seen to increase, intensify and expand across the continent. Additionally, increases in the severity of annual to inter-annual climate systems (such as the El Niño Southern Oscillation (ENSO), the Southern Annual Mode (SAM), the Indian Ocean Dipole (IOD)) and even in overarching decadal to int
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50

FARIAS, André Aires de. "Caracterização e análise das secas na sub-bacia hidrográfica do Rio Taperoá e avaliação dos impactos e ações de convivência com a seca de 2012-2014 no município de Taperoá – PB." Universidade Federal de Campina Grande, 2016. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/985.

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Submitted by Maria Medeiros (maria.dilva1@ufcg.edu.br) on 2018-06-14T15:05:54Z No. of bitstreams: 1 ANDRÉ AIRES DE FARIAS - TESE (PPGRN) 2016.pdf: 5737610 bytes, checksum: 24b094da2cef8f2db3a8552a03764f80 (MD5)<br>Made available in DSpace on 2018-06-14T15:05:54Z (GMT). No. of bitstreams: 1 ANDRÉ AIRES DE FARIAS - TESE (PPGRN) 2016.pdf: 5737610 bytes, checksum: 24b094da2cef8f2db3a8552a03764f80 (MD5) Previous issue date: 2016-02-26<br>Capes<br>Objetivou-se identificar e analisar os períodos de secas na sub-bacia hidrográfica do Rio Taperoá (SBHRT) e os impactos sociais, econômicos e ambientais
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