U.S. Geological Survey Fact Sheet最新文献

{"title":"Maine and Landsat","authors":"","doi":"10.3133/fs20203066","DOIUrl":"https://doi.org/10.3133/fs20203066","url":null,"abstract":"","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69285633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"International geoscience collaboration to support critical mineral discovery","authors":"","doi":"10.3133/fs20203035","DOIUrl":"https://doi.org/10.3133/fs20203035","url":null,"abstract":"","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69285432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Early warning pesticide monitoring in Nevada’s surface waters","authors":"J. M. Huntington, Derek C. Entz, C. E. Thodal","doi":"10.3133/fs20203070","DOIUrl":"https://doi.org/10.3133/fs20203070","url":null,"abstract":"A pesticide is a substance, or mixture of substances, used to kill or control insects, weeds, plant diseases, and other pest organisms (Nevada Department of Agriculture, 2019). Commercial pesticide applicators, farmers, and homeowners apply about 1.1 billion pounds of pesticides annually to agricultural land, non-crop land, and urban areas throughout the United States (Atwood and Paisley-Jones, 2017). Although intended for beneficial uses, there are also risks associated with pesticide applications, including contamination of groundwater and surface-water resources, which can adversely affect aquatic life and water supplies. Pesticides can contaminate groundwater and surface water directly through point sources (spills, disposal sites, or pesticide drift during an application). The main avenue of contamination, however, is indirect by non-point sources, which include agricultural and urban runoff, erosion, leaching from application sites, and precipitation that has become contaminated by upwind applications (fig. 1, Thodal and others, 2009).","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69285190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of undiscovered oil and gas resources in the Upper Cretaceous Austin Chalk and Tokio and Eutaw Formations, U.S. Gulf Coast, 2019","authors":"J. Pitman, S. Paxton, S. Kinney, K. Whidden, S. Haines, B. A. Varela, T. Mercier, Cheryl A. Woodall, C. J. Schenk, Heidi M. Leathers-Miller, O. Pearson, L. Burke, P. Le, J. Birdwell, Nicholas J. Gianoutsos, K. French, R. M. Drake, T. Finn, Geoffrey S. Ellis, S. Gaswirth, K. Marra, M. Tennyson, Chilisa M. Shorten","doi":"10.3133/fs20203045","DOIUrl":"https://doi.org/10.3133/fs20203045","url":null,"abstract":"","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69285450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physical and chemical stressors on algal, invertebrate, and fish communities in 14 Milwaukee area streams, 2004–2013","authors":"B. C. Eikenberry, M. Nott, J. Stewart, D. Sullivan, D. Alvarez, A. H. Bell, F. Fitzpatrick","doi":"10.3133/fs20203051","DOIUrl":"https://doi.org/10.3133/fs20203051","url":null,"abstract":"In 2004, the U.S. Geological Survey (USGS) began sampling 14 wadable streams in urban or urbanizing watersheds near Milwaukee, Wisconsin (fig. 1). The overall goal of the study is to assess the health of the aquatic communities in the Milwaukee Metropolitan Sewerage District planning area to inform current and future watershed management. In addition to collection of biological data on aquatic communities, physical and chemical data were also collected to evaluate effects of potential environmental stressors on the aquatic communities. This fact sheet summarizes the primary results of the study from 2004 to 2013. Detailed information is described in Scudder Eikenberry and others (2020a), and all data are available in Scudder Eikenberry and others (2020b; https://doi.org/ 10.5066/ P9FWMODL). Evaluations of aquatic communities using multiple groups of organisms—algal, invertebrate, and fish assemblages—and multiple measures or “metrics” of the groups are needed to fully understand environmental tolerances of the communities to chemical and physical stressors related to urban development (Coles and others, 2012). Each assemblage and each species have different tolerances to environmental stressors, different ranges of mobility, and different life spans. Algae reproduce quickly, living from days to weeks, and can indicate short-term changes in their environment. Algae form the base of the food web in streams and contribute to the processing of nutrients such as nitrogen and phosphorus, with excess nutrients often reflected by high algal biovolumes. Invertebrates are good indicators of water quality because of their relatively longer lifespans of months to years in comparison to algae, and their mostly stationary nature when compared to predators like fish make them indicative of sitespecific conditions. Fish generally live longer than other aquatic organisms, so fish assemblages integrate longer time periods of exposure to pollutants and other stressors. Fish are more mobile than invertebrates, so fish may better reflect conditions within a larger area, such as a watershed. Use of all three assemblages helps provide a complete picture of the health of the aquatic community and the overall stream condition. Urban development can degrade streams physically and chemically through changes in characteristics such as streamflow, water quality, and habitat, which can in turn act as stressors on aquatic communities and adversely affect the overall ecological health of streams. Examples of stressors that can alter urban streams and aquatic communities in urban streams are increased runoff from impervious surfaces; straightening and armoring of natural streams; removal of trees and other vegetation along streams; and chemical inputs from sewage, road salt, and pesticides. Multiple lines of evidence, integrating key stressors and responses to them, are critical for understanding how different stressors adversely affect aquatic communities, which stressors are m","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69285487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Water resources of Red River Parish, Louisiana","authors":"Angela L. Robinson, V. White","doi":"10.3133/fs20203053","DOIUrl":"https://doi.org/10.3133/fs20203053","url":null,"abstract":"","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69285497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Technical overview of the U.S. Geological Survey Earth Mapping Resources Initiative (Earth MRI)","authors":"W. Day","doi":"10.3133/fs20203055","DOIUrl":"https://doi.org/10.3133/fs20203055","url":null,"abstract":"Initiative (Earth MRI) was developed by the U.S. Geological Survey (USGS) in response to a Federal directive calling on various Federal agencies to address potential vulnerabilities in the Nation’s supply of critical mineral resources. The primary purpose of this initiative is to identify potentially mineralized areas containing critical minerals by gathering new basic geologic data about the United States and its territories and to make these data publicly available through the Earth MRI web portal (https://usgs.gov/earthmri). The gathering of data is accomplished through geophysical surveys, geologic mapping, and the collection of topographical (light detection and ranging, or lidar) data. In addition to identifying areas permissive for hosting critical minerals, the new data collected are likely to be helpful in addressing other societal needs as well, such as by helping to locate groundwater resources, providing information needed to mitigate effects of natural hazards, and identifying locations of the mineral resources useful for restoring and rebuilding aging infrastructure in the United States.","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69285550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ohio and Landsat","authors":"","doi":"10.3133/fs20203065","DOIUrl":"https://doi.org/10.3133/fs20203065","url":null,"abstract":"","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69285623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alaska and Landsat","authors":"","doi":"10.3133/fs20203068","DOIUrl":"https://doi.org/10.3133/fs20203068","url":null,"abstract":"","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69285645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"When volcanoes fall down—Catastrophic collapse and debris avalanches","authors":"L. Siebert, M. Reid, J. Vallance, T. Pierson","doi":"10.3133/FS20193023","DOIUrl":"https://doi.org/10.3133/FS20193023","url":null,"abstract":"The steep-sided Augustine lava-dome complex in Cook Inlet of Alaska is ringed by deposits of multiple debris avalanches. Augustine volcano has collapsed a dozen times or more in the past 2,500 years and has the highest known rate of edifice collapse of any volcano. The debris-avalanche deposits (colored) in this image extend out to sea on all sides and are partly covered by deposits of younger eruptions (gray) closer to the volcano. The impact of the debris sweeping into the ocean may have produced tsunamis, such as the 1883 Cook Inlet tsunami caused by the Burr Point collapse. Selected deposits are named, with the Burr Point deposit (in red) being the youngest. Base map from July 3, 2018, Landsat 8 image is overlain by debris-avalanche deposits mapped by Waitt and Begét (2009).","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42188725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}