8,002 Works

Post-expedition report for USGS T-3 Ice Island heat flow measurements in the High Arctic Ocean, 1963-1973

Carolyn Ruppel, A.H Lachenbruch & B.V Marshall
In February 1963, the U.S. Geological Survey (USGS) began a study of heat flow in the Arctic Ocean Basin and acquired data at 356 sites in Canada Basin and Nautilus Basin and on Alpha-Mendeleev Ridge by the end of the project in 1973. The USGS heat flow and associated piston coring operations were conducted from a scientific station on the freely drifting T-3 Ice island (also known as Fletcher's Ice Island). The Naval Arctic Research...

Water-Quality, Bed-Sediment, and Biological Data (October 2016 through September 2017) and Statistical Summaries of Data for Streams in the Clark Fork Basin, Montana

Tom E. Cleasby, Michelle I. Hornberger & Matthew A. Turner
Water, bed sediment, and biota were sampled in streams from Butte to near Missoula, Montana, as part of a monitoring program in the upper Clark Fork Basin of western Montana. The sampling program was led by the U.S. Geological Survey (USGS), in cooperation with the U.S. Environmental Protection Agency.

Thermal Data and Navigation for T-3 (Fletcher's) Ice Island Arctic Ocean Heat Flow Studies, 1963-73

Carolyn Ruppel, Deborah R Hutchinson, Arthur H. Lachenbruch & John K. Hall
The T-3 (Fletcher's) Ice Island in the Arctic Ocean was the site of a scientific research station re-established by the Naval Arctic Research Laboratory starting in 1962. Starting in 1963, the USGS acquired marine heat flow data and coincident sediment cores at sites in Canada Basin, Nautilus Basin, Mendeleev Ridge, and Alpha Ridge as the ice island drifted in the Amerasian Basin. At least 584 heat flow penetrations were attempted, and data were reported at...

Geotagged Low-Altitude Aerial Imagery From Unmanned Aerial System Flights Over Town Neck Beach, in Sandwich, Massachusetts, With Associated Ground Control Points, and Transects Collected by the U.S. Geological Survey on January 22, January 25, February 11, March 30, and September 21, 2016

Ellyn T Montgomery, Christopher R Sherwood, Peter Traykovski, Barry Irwin, Jonathan Borden, Marinna M Martini & Simon Minor
Low-altitude (30-120 meters above ground level) digital images of Town Neck Beach in Sandwich, Massachusetts, were obtained with a series of cameras mounted on small unmanned aerial systems (UAS, also known as a drone). Imagery was collected at close to low tide on five days to observe changes in beach and dune morphology. The images were geolocated by using the single-frequency geographic positioning system aboard the UAS. Ground control points (GCPs) were established by using...

Hierarchically nested and biologically relevant monitoring frameworks for Greater Sage-grouse, 2019, Nevada and Wyoming, Interim

Michael S. O�Donnell, David R Edmunds, Cameron Aldridge, Julie A Heinrichs, Steve Hanser, Brian G Prochazka & Peter S Coates
We developed a hierarchical clustering approach that identifies biologically relevant landscape units that can 1) be used as a long-term population monitoring framework, 2) be repeated across the Greater sage-grouse range, 3) be used to track the outcomes of local and regional populations by comparing population changes across scales, and 4) be used to inform where to best spatially target studies that identify the processes and mechanisms causing population trends to change among spatial scales....

Environmental DNA surveillance data for USGS streamgage sampling in the Columbia River Basin, 2018

Adam J Sepulveda
Environmental DNA quantitative PCR results for water samples collected in 2018 at USGS streamgages downstream of Columbia River Basin reservoirs that are considered to have moderate to high suitability for invasive dreissenid mussels. Water samples were tested for DNA of dreissenid mussels, kokanee salmon, and yellow perch.

Factors Affecting Spatial and Temporal Variations of Annual Summer Median Water Yields in Southwestern Michigan

David J Holtschlag
Median summer water yields and resultant flows are used in Michigan to regulate large water withdrawals to help prevent negative effects on characteristic fish populations. Large water withdrawals commonly are associated with irrigation in rural areas. In an earlier statewide report, an index-flow statistic for the period of record, defined as the median flow during the summer month of lowest flow, was used to characterize median summer flows and associated water yields. In this report,...

Greater Everglades Burmese Python Stable Isotope Data and Standard Ellipse Area Literature Review

Brian J. Smith, Kristen M. Hart, Amanda W Demopoulos & Christina M. Romagoso
Burmese pythons are an invasive species in the Greater Everglades Ecosystem. Burmese pythons captured in the ecosystem are euthanized, and in an effort to learn about this invasive species, all euthanized pythons are necropsied, during which time samples are collected. We analyzed the stable isotope ratios of carbon and nitrogen in muscle samples from 423 Burmese pythons euthanized and necropsied between 2003-05-01 and 2012-09-02, and after processing and QA/QC, we were left with isotope ratios...

TEST - Justin updated on 7/10

Justin J. Wright & U.S. Forest Service
Description was updated

TEST DOI - Updated on 7/10

Justin J. Wright & U.S. Forest Service
Description was updated

Advanced Solid-state Array Spectroradiometer

Earth Resources Observation And Science Center
The Advanced Solid-state Array Spectroradiometer (ASAS) data collection contains data collected by the ASAS sensor flown aboard NASA aircraft. A fundamental use of ASAS data is to characterize and understand the directional variability in solar energy scattered by various land surface cover types (e.g.,crops, forests, prairie grass, snow, or bare soil). The sensor's Bidirectional Reflectance Distribution Function determines the variation in the reflectance of a surface as a function of both the view zenith angle...

Antarctic Single Frames

Earth Resources Observation And Science Center
Antarctic Single Frame Records are a collection of aerial photographs over Antarctica from the United States Antarctic Resource Center (USARC) and the British Antarctic Survey (BAS) dating from 1946 to 2000. The Antarctic Single Frame Records collection includes black-and-white, natural color and color infrared images with a photographic scale ranging from 1:1,000 to 1:64,000. U.S. Antarctic Single Frames The U.S. Navy began flying Antarctic trimetrogon photography with Operation Highjump in 1946 followed by Operation Windmill...

U.S. Antarctic Resource Center - Antarctic Flight Line Maps

Earth Resources Observation And Science Center
The Antarctic Flight Line Maps or Flight Indexes are a collection of 1:250,000 scale topographic maps over Antarctica from the U.S. Antarctic Resource Center (USARC). The Antarctic topographic maps have original hand-drawn flight lines for aerial photographic missions. The collection includes over 300 maps and charts that encompass approximately 6,000 flight lines that have been flown over Antarctica by the U.S. Navy since 1946. Flight line maps in digital format allow users to identify flight...

Automated time-series measurement of microbial concentrations in groundwater-derived water supplies

Mark A. Borchardt, Maureen A. Muldoon, Aaron D. Firnstahl, David W Owens & Randall J Hunt
We deployed a sampler to characterize water quality from a household well tapping a shallow fractured dolomite aquifer in northeast Wisconsin. The sampler was deployed from January to May 2017, and monitored temperature, nitrate, chloride, specific conductance, and fluorescent dissolved organic matter on a minute time step; water was directed to sequential microbial filters during three recharge periods that ranged from 5 to 20 days. Results from the automated sampler demonstrate the dynamic nature of...

Near-real-time Herbaceous Annual Cover in the Sagebrush Ecosystem, USA, July 2019

Stephen P Boyte
This dataset provides a near-real-time estimate of 2019 herbaceous annual cover with an emphasis on annual grass (Boyte and Wylie. 2016. Near-real-time cheatgrass percent cover in the Northern Great Basin, USA, 2015. Rangelands 38:278-284.) This estimate was based on remotely sensed enhanced Moderate Resolution Imaging Spectroradiometer (eMODIS) Normalized Difference Vegetation Index (NDVI) data gathered through June 24, 2019. This is the second iteration of an early estimate of herbaceous annual cover for 2019 over the...

Weather Station Data on the Juneau Icefield

Emily H Baker, Scott McGee, Seth W. Campbell, Jamie L. Pierce & Christopher J Mcneil
Since the 1940s, the Juneau Icefield Research Program (JIRP) has been measuring surface mass balance on the Juneau Icefield. This is the longest ongoing program of its kind in North America. The program nominally occurs between late June and late August, traversing between Juneau, Alaska and Atlin, British Columbia. JIRP has examined the surface mass balance of the Juneau Icefield since 1946, with principal efforts focused on Lemon Creek Glacier and Taku Glacier. Glaciological, geodetic,...

Bryophyte and plant seedling composition and abundance data for Hakalau Forest NWR

Evan M. Rehm, Miles K. Thomas, Stephanie G. Yelenik, Dave L. Bouck & Carla M. D'Antonio
This data release includes data and metadata on 1) the coverage and composition of bryophytes and other ground cover, 2) seedling abundance, composition, and rooting substrate and 3) sampling locations. All sites were within Hakalau Forest National Wildlife Refuge on Hawaii Island. This study aims to evaluate the role of bryophytes in seedling recruitment and thus forest regeneration in different forest types. We compared bryophyte composition and coverage between tree species (Acacia koa and Metrosideros...

Lake Houston (Texas) EFDC hydrodynamic model for water-surface elevation and specific conductance simulations, 2009-2017

Erik A Smith
The U.S. Geological Survey (USGS), in a partnership with ExxonMobil Corporation, developed an updated Lake Houston EFDC model for predicting water-surface elevation, residence time, water temperature, and salinity. With a focus on salinity and water-surface elevations, the updated model simulated conditions from 2009-2017 with additional flow to simulate the Luce Bayou Interbasin Transfer under three different flow scenarios. One of the primary partnership goals was to understand the impact of the Luce Bayou Interbasin Transfer...

Survey data of larval fish, zooplankton, and aquatic plants collected from the St. Clair River delta, MI (2010-2011)

Edward Roseman & Taaja R. Tucker
The St. Clair River delta, part of the St. Clair-Detroit River System (SCDRS), is the most fished coastal wetland area in the Laurentian Great Lakes and provides nursery habitat for a variety of fish species; however, few large-scale surveys of early fish life stages have been performed since the 1980s. Larval fish, zooplankton, and aquatic plants were sampled at 21 sites in delta channels and backwaters of the St. Clair-Detroit River System (SCDRS; USA/CAN) from...

Estimates of discharge from wastewater treatment plants for 1,518 U.S. Geological Survey study watersheds, 1978 through 2012

James A Falcone
This product consists of a table of annual discharge estimates in millions of gallons per day from wastewater treatment plants (WWTPs) for 1,518 watersheds in the conterminous United States. The data are based on information extracted from the U.S. Environmental Protection Agency's Clean Watersheds Needs Survey. The data are for 13 time periods, beginning in 1978 and ending in 2012. Total nitrogen and phosphorus loads from WWTPs per watershed for each year are also provided,...

Hawaii Waterfalls Linked to the National Hydrography Dataset

Daniel Wieferich, Yin-Phan Tsang, Dana Infante, Brendan Martin, Hannah Clilverd & Ralph Tingley
This dataset contains information about waterfall locations and estimated waterfall heights on five of the main Hawaiian Islands including Kauai, Oahu, Maui, Molokai, and Hawaii. Initial spatial information was gathered from the National Hydrography Dataset (NHD), Geographic Names Information System (GNIS), the Hawaii Statewide GIS Program, and the World Waterfall Database. Where image quality permitted, the coordinates and spatial attributes from source data were used to verify and improve the quality of waterfall locations using...

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