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Album caption: Aerial photograph of Redoubt Volcano, Drift River Valley, Rust Slough, Cannery Creek, and Drift River Terminal(between Rust Slough and Drift River). View to West Redoubt Volcano, Alaska. 1989-1990. Photograph by Steven R. Brantley on April 27, 1990.
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This collection contains the original “raw” survey data that were recorded and transcribed by each observer during the Yukon-Kuskokwim Delta (YKD) Aerial Breeding Pair Survey. Left-front and right-front seat observers recorded data on geese, swans, and cranes since 1985, while data on eiders, ducks, and waterbirds was recorded by a right-rear seat observer since 1989. These raw transcribed data should be used to produce updated quality-control (QC) datasets by running the quality assurance/quality control script “AKaerial.R” whenever the quality control procedures are revised or modified. The data files in this collection were named using the following naming convention: YKD(YKG)YYYY_RawObs_OOOO, where YKD=Duck...
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Grasslands in the northern Great Plains are important ecosystems that support local economies, tribal communities, livestock grazing, diverse plant and animal communities, and large-scale migrations of big game ungulates, grassland birds, and waterfowl. Climate change and variability impact how people and animals live on and interact with grasslands, and can bring more frequent droughts, fires, or new plant species that make managing these landscapes challenging. Understanding how climate change and variability will impact grassland ecosystems and their management in the 21st century first requires a synthesis of what is known across all of these scales and a gap analysis to identify key areas of focus for future...
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The Department of the Interior and the U.S. Geological Survey have made it a priority to train the next generation of scientists and resource managers. The Climate Adaptation Science Centers (CASCs) and consortium institutions are working to contribute to this initiative by building and supporting a network of students across the country who are interested in the climate sciences and climate adaptation. The purpose of this project was to support the development of a national early career communication platform to facilitate and increase information sharing and networking across the CASCs and consortium institutions. This was accomplished by working with the Early Career Climate Forum (ECCF), a CASC-supported science...
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The purpose of this grant was to provide research opportunities to students and staff working with the Southeast Climate Science Center (SE CSC) with a focus on decision analysis and science communication. Research activities occured primarily within the framework of existing SE CSC-funded projects. Student research supported project activities associated with the development and use of science-based information to make climate adaptation management decisions. Student abilities to participate in these research activities were enhanced by participation in a course entitled “Introduction to Structured Decision Making” taught at the National Conservation Training Center (NCTC) in Shepherdstown, WV. In addition to participation...
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This collection contains the quality-control (QC) transcribed data from the Yukon-Kuskokwim Delta Aerial Breeding Pair Survey. These QC data were produced from the “raw” data using the R Package “AKaerial.” The raw data were evaluated against the current data standards in the ‘AKaerial data dictionary’ and saved to new QC data files with associated log files that document any changes that were made. From 1985 to 1997, observers recorded bird observations out to 200 meters from the aircraft using continuously running tape players (with a locational accuracy of +/- 5 km), while an automated voice recording survey program (with a spatial accuracy of +/- 0.5 km) was used to record data from 1998 to present. The data...
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This collection contains the report log files produced by the R Package “AKaerial” when the QC data were created from the raw transcribed data. The QC log files document the quality control process, data standards, and what changes (if any) were made to the QC data compared to the raw data. Each log file was named following the same file naming conventions: SSSYYYY_QCLog_OOOO, where; YKD=Duck data, YKG=Goose data, YYY=Year, and OOO=observer’s first initial and last name.
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This multi-layer GeoPackage contains the Alaska Arctic Coastal Plain Aerial Breeding Pair Survey design transects from 2007 to present. The original transects were created as shapefiles and imported to this SQLite database. Transects were saved as individual polylines named according to the year they were created (e.g., “main.ACP_2007_Trans,” “main.ACP_2008_Trans,” “main.ACP_2009_Trans,” etc.). These aerial transects were developed systematically from randomly-selected start points and created along constant lines of latitude. The inter-transect spacing in the low, medium, high, and very-high density strata varies so that areas with higher waterfowl density are surveyed more intensively. The current four-year rotating...
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This multi-layer GeoPackage contains the YKD Coastal Zone Survey design transects from 1985 to present. The original transects were imported to this SQLite database structure and saved as individual polylines named according to the year they were created (e.g., “main.YK_1985_Trans,” “main.YK_1986_Trans,” “main.YK_1987_Trans,” etc.). The aerial transects were developed systematically from randomly-selected start points and created along constant lines of latitude. The inter-transect spacing in the low, medium, high, and very-high density strata varies so that areas with higher waterfowl density are surveyed more intensively. Though the overall study area never changed, the YKD Survey design was modified several times,...
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In 2019 a pilot study was conducted to determine the feasibility of using distance sampling to estimate density and population size of goose and eider nests on the Yukon-Kuskokwim Delta (YKD). Distance sampling (Buckland et al. 2001) is a common and well-understood method to estimate wildlife population size or density, especially for sparse and hard-to-detect populations. A main advantage of distance sampling is that it accounts for imperfect detection and gives precise estimates for a given level of effort relative to other methods. The objectives for the pilot project in 2019 was to (1) determine if distance sampling is feasible on the YKD, (2) determine what aspects of the field protocol need to be changed or...
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This geopackage contains the density strata that were used to create the YKD Coastal Zone Survey’s current four-year rotating panel design. This file was derived from a mid-1980’s ArcInfo coverage, ‘Sampling Intensity’ (“SI arc”) that was produced through the visual interpretation of 1:250,000-scale LANDSAT imagery and the nesting density of cackling Canada geese.
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The mission of the US Geological Survey’s National Climate Adaptation Science Center (NCASC) is to provide managers, policy-makers, and other stakeholders with information and decision-making tools to respond to effects of climate change on natural resources. In support of this goal, the NCASC wishes to support an exceptional mentoring experience for graduate students from select partner institutions in developing policy-relevant products related to managing climate change impacts on fish, wildlife, and/or ecosystems. For many graduate students conducting research on the impacts of climate change on natural resources, disseminating results of their research to managers, policy-makers, and/or other stakeholders is...
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This data release provides quantitative whole rock geochemical results from The Geysers vapor-dominated geothermal field in California. The concentrations of major elements are reported in oxide weight percent by wavelength dispersive x-ray fluorescence (WDXRF), the concentrations for sixty elements are reported in elemental weight percent (pct) or parts per million (ppm) from inductively coupled plasma-optical emission spectrometry-mass spectrometry ICP-OES-MS analysis, mercury is reported in ppm by cold vapor atomic absorption spectrometry (CVAAS), and ammonium in ppm from automated colorimetry analysis. The analyses show significant enrichment of volatile elements and elements such as sulfur, boron, arsenic,...
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This data release provides semiquantitative mineralogy results from X-ray diffraction (XRD) analyses of mineral scales from The Geysers vapor-dominated geothermal field in California. The mineral species and their abundances are reported in weight percent and values have been normalized to total 100 percent for each sample. The X-ray diffraction results show that the mineral samples from the wellheads are primarily composed of ammonium (NH4+) sulfate minerals and sassolite B(OH)3, whereas sulfide minerals such as cinnabar and pyrite are the most abundant minerals observed in the power plants. Mineral scales vary along the steam flow path, from the wellhead to power plants. Relatively abundant iron oxide and iron...
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Climate adaptation planning provides a framework for Tribes to exercise sovereignty over wild resources important for the subsistence way of life and economic and cultural activities that are being impacted by climate change. The climate adaptation planning process includes identifying key resources that are currently being impacted by climate change, or that may be impacted in the future, as well as identifying practical and strategic steps that can be taken to mitigate or adapt to the changing circumstances. Through a partnership among the Ketchikan Indian Community, the Metlakatla Indian Community, OceansAlaska, and the University of Alaska Fairbanks this project will support Tribal- and Alaska Native-led...
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This GeoPackage contains the analysis strata (“YKD_AnalysisStrata”) used in calculating population indices for ducks, loons, mergansers, grebes, gulls, and terns. This layer was created from the file (“YKD_DesignStrata”) when the existing rotating panel design was developed in 1999. This layer was originally created as an ArcInfo coverage, saved to a shapefile, and imported to SQLite Database format.
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Provided here is a globally distributed catalog of earthquakes and nuclear explosions with calibrated hypocenters, referred to as the Global Catalog of Calibrated Earthquake Locations or GCCEL. This dataset contains more than 23,908earthquakes in 346 well distributed clusters. Currently there are more than 4M arrival times with the majority being the Pg, Pn, P, Sg, Sn and S phases. The term “calibrated” refers to the property that the hypocenters are minimally biased by unknown Earth structure and that the uncertainties are meaningful. Uncertainties are calculated using empirically determined variability of the arrival time data itself, specific to each calibrated cluster of hypocenters. The data are carefully processed...
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Brian Head formation, upper part, above it, acidic lavas. Black Canyon, east of Sevier. Garfield County, Utah. 1943.
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View in Aspen Range northward across south Sulphur Canyon, T. 9 S., R.43 E. Slug Creek quadrangle, the Gannett and younger erosion surfaces are cut by canyons of the Blackfoot cycle; ledges at top of Wells formation. Caribou County, Idaho. 1910. Plate 21-A, with graphics, in U.S. Geological Survey. Professional paper 152. 1927.
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Shaly and limy strata of the lower division of the Wayan formation exposed in Tincup Canyon, in the north-central part of the Freedom quadrangle. Caribou County, Idaho. October 29, 1914. Plate 14-B in U.S. Geological Survey Professional Paper 98-G. 1917. Plate 40-B in U.S. Geological Survey Professional Paper 132. 1927.
map background search result map search result map Brian Head formation, upper part, above it, acidic lavas. Garfield County, Utah. 1943. View in Aspen Range northward across south Sulphur Canyon, T. 9 S., R.43 E. Caribou County, Idaho. 1910. Shaly and limy strata of the lower division of the Wayan formation exposed in Tincup Canyon, in the north-central part of the Freedom quadrangle. Caribou County, Idaho. 1914. Supporting Students and Early Career Researchers in the Development of Science to Inform Adaptation Management Decisions Supporting Early Career Climate Communications and Networking Science to Action Fellowship: Supporting Graduate Students to Apply Science to Decision Making and Adaptation Synthesis of Climate Impacts and Adaptation on Grassland Ecosystems in the Northern Great Plains Building Tribal Capacity to Adapt and Respond to Climate Change in Southern Southeast Alaska Semiquantitative mineralogy results from powder X-ray diffraction (XRD) analyses of mineral scales from The Geysers geothermal field, California, USA The major, minor, and trace element geochemistry of mineral scales from The Geysers geothermal field, California, USA Alaska Arctic Coastal Plain Aerial Breeding Pair Survey Design Transect Geodata Alaska Yukon Delta Nest Distance Sampling Pilot Project The Eruption of Redoubt Volcano. Alaska, 1989-1990. Alaska Yukon-Kuskokwim Delta Aerial Survey Design Strata Alaska Yukon-Kuskokwim Delta Aerial Survey Duck Analysis Strata Alaska Yukon-Kuskokwim Delta Aerial Survey Design Transects Alaska Yukon-Kuskokwim Delta Aerial Survey Raw Transcribed Data Alaska Yukon-Kuskokwim Delta Aerial Survey Analysis File Summary Reports Alaska Yukon-Kuskokwim Delta Aerial Survey QC Transcribed Data Semiquantitative mineralogy results from powder X-ray diffraction (XRD) analyses of mineral scales from The Geysers geothermal field, California, USA The major, minor, and trace element geochemistry of mineral scales from The Geysers geothermal field, California, USA View in Aspen Range northward across south Sulphur Canyon, T. 9 S., R.43 E. Caribou County, Idaho. 1910. Shaly and limy strata of the lower division of the Wayan formation exposed in Tincup Canyon, in the north-central part of the Freedom quadrangle. Caribou County, Idaho. 1914. Alaska Yukon Delta Nest Distance Sampling Pilot Project Alaska Yukon-Kuskokwim Delta Aerial Survey Design Strata Alaska Yukon-Kuskokwim Delta Aerial Survey Duck Analysis Strata Alaska Yukon-Kuskokwim Delta Aerial Survey Design Transects Alaska Yukon-Kuskokwim Delta Aerial Survey Raw Transcribed Data Alaska Yukon-Kuskokwim Delta Aerial Survey Analysis File Summary Reports Alaska Yukon-Kuskokwim Delta Aerial Survey QC Transcribed Data Brian Head formation, upper part, above it, acidic lavas. Garfield County, Utah. 1943. Alaska Arctic Coastal Plain Aerial Breeding Pair Survey Design Transect Geodata Building Tribal Capacity to Adapt and Respond to Climate Change in Southern Southeast Alaska Synthesis of Climate Impacts and Adaptation on Grassland Ecosystems in the Northern Great Plains Supporting Students and Early Career Researchers in the Development of Science to Inform Adaptation Management Decisions The Eruption of Redoubt Volcano. Alaska, 1989-1990. Supporting Early Career Climate Communications and Networking Science to Action Fellowship: Supporting Graduate Students to Apply Science to Decision Making and Adaptation