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Raw data were collected in Shenandoah National Park during summer 2012. Air and temperature data were collected using temperature loggers at several stations throughout the park. These data were used in the publication of the manuscript "Accounting for groundwater influence on headwater stream thermal sensitivity to climate change" through the journal Ecological Applications. Water temperature data were collected at all 78 reach locations during the summer of 2012 (23 June–7 September). Temperature was measured every hour with a logger.
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Comma-separated values (.csv) file containing data related to mercury concentrations in dragonfly samples from U.S. National Parks collected as part of the Dragonfly Mercury Project (DMP). This data release supersedes Eagles-Smith, C.A., Nelson, S.J., Flanagan-Pritz, C.M., Willacker Jr., J.J., and Klemmer, A.J., 2018, Total mercury concentrations in dragonfly larvae from U.S. national parks (ver. 8.0, December 2022): U.S. Geological Survey data release, https://doi.org/10.5066/P9TK6NPT. Please contact fresc_outreach@usgs.gov for access.
Categories: Data, Data Release - Revised; Tags: Acadia National Park, Allegheny Portage Railroad National Historic Site, Amistad National Recreation Area, Apostle Islands National Lakeshore, Appomattox Court House National Historical Park, All tags...
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Rapid advances in video technology are enabling new strategies for species abundance estimation. Here we provide estimates of fish abundance derived from video data collected in a series of stream pools in Shenandoah National Park, Virginia (n=41). Two 360-degree cameras were simultaneously used at each pool site where 15-minutes of underwater footage was collected. Environmental data are provided describing pool morphology, canopy cover, and fish cover (boulders, large woody debris, and undercut banks).
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The U.S. Geological Survey (USGS) Water Mission Area (WMA) - Ecosystems Mission Area (EMA) EcoDrought project is comprised of interdisciplinary teams in five pilot regions across the country. The over-arching project goal is to measure streamflow in headwater streams and to relate flow variation to stream fish population dynamics. For the catchments located in Shenandoah National Park, Virginia, the Virginia/West Virginia Science Center and the New England Water Science Center (NewEngWSC) partnered with the fish ecology group at Leetown Science Center, a part of the EMA’s Eastern Ecological Science Center, in order to establish gaging stations in headwater streams with ongoing ecological data collection and modeling...
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This database contains hourly water and air temperature data from 120 site locations within 17 watersheds in Shenandoah National Park, Virginia between June 23,2012 and October 25, 2016. The database includes three separate table files (i.e, entities) in csv format: 1) Water temperature data, 2) air temperature data, and 3) site location data. All temperature data were collected using HOBO Pro V2 thermographs (accuracy = 0.2 degrees Celsius, drift = <0.1 degrees Celsius per year per year). These raw data were summarized to mean daily air and water temperatures for the analysis used in Johnson et al. Johnson, Z.C., Snyder, C.D. and Hitt, N.P., 2017, Landform features and seasonal precipitation predict shallow groundwater...
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This map depicts 25 USNVC vegetation association classes and groups for Shenandoah National Park developed from AVIRIS hyperspectral imagery, ASTER multispectral imagery and topographic modeling (version 2.0b). Overall accuracy of this map is 60.5% as determined from 703 accuracy assessment field plots.
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Shenandoah National Park, Virginia. Mud-lump breccia in the outcrop along the Appalachian Trail at the north end of the base of Little Stony Man Cliffs. Lumps of hard red argillite stand out as knots on the weathered surface. Light-gray streaks are irregular wisps of silvery phyllite. Matrix is fine- grained schistose greenstone. Figure 13, U.S. Geological Survey Bulletin 1265.
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Shenandoah National Park, Virginia. Sawed slab of amygdaloid breccia. Slab is from the outcrop on the south side of the road about 500 feet southeast of Big Meadows Lodge. The angular blocks are probably pieces of frothy lava crust that formed at the top of the flow. The crust was broken by continued movement of the still-molten lava beneath, and jumbled pieces were rafted along and were eventually frozen in place when the flow came to rest and solidified. During later metamorphism the amygdules and some of the interstices between the blocks were filled with white quartz and yellow-green epidote. Locally, part of the rock has been altered to epidosite, a fine- grained light-green aggregate of epidote and quartz....
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Comma-separated values (.csv) files containing data related to a National-scale assessment of mercury bioaccumulation in the US National Parks using dragonfly larvae as biosentinels through a citizen science framework.
Categories: Data; Tags: Acadia National Park, Allegheny Portage Railroad National Historic Site, Apostle Islands National Lakeshore, Appomattox Court House National Historical Park, Aquatic Biology, All tags...
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In July 2016, July 2019, and March 2020, 318 seismic recordings were acquired at locations within Shenandoah National Park, Virginia, using MOHO Tromino Model TEP-3C three-component seismometers to assess depth to bedrock using the HVSR method. This method requires a measurement of estimate of shear wave velocity, which depends on the regolith sediment composition and density, for the conversion of measured resonance frequency to a depth to bedrock. Shear wave velocities were calculated for sediment in Shenandoah NP at locations where regolith thickness is known (e.g. at documented boreholes). The locations in this study were generally selected to characterize the depths to bedrock adjacent to streams monitored...
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Comma-separated values (.csv) file containing data related to mercury and biogeochemical parameters in surface water and aquatic sediment collected from U.S. National Parks in 2014-2015.
Categories: Data, Data Release - Revised; Tags: Acadia National Park, Big Bend National Park, Big Cypress National Park, Big Thicket National Preserve, Cape Cod National Seashore, All tags...
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Shenandoah National Park, Virginia. Schistose greenstone along the Appalachian Trail at the base of Little Stony Man Cliffs. Here, a zone of breccia and schistose greenstone marks the boundary between the second and third flows above the base of the Catoctin Formation. The outcrop is approximately 3 feet high. Figure 7, U.S. Geological Survey Bulletin 1265.
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Shenandoah National Park, Virginia. Blue Ridge, viewed from the west. The flat fertile valley floor (foreground) is underlain by limestone of the Paleozoic age capped by terrace gravel. The low wooded foothills (middle distance) are underlain by steeply dipping quartzite and shale of the Chilhowee Group. The main mass of the Blue Ridge is composed of granitic basement rocks, but the highest part of the ridge is capped by greenstone of the Catoctin Formation. Photo by U.S. National Park Service. Figure 1, U.S. Geological Survey Bulletin 1265.
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Shenandoah National Park, Virginia. Columnar jointing in greenstone. Large column along the Appalachian Trail about 200 feet south of Little Stony Man parking area. The column is cut by cleavage which dips east, away from the observer. The segment of the coluiai above each cleavage plane is offset westward from the segment beneath as a result of movement during formation of the cleavage. Column is approximately 2 feet in diameter. Figure 9 (right), U.S. Geological Survey Bulletin 1265.
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Includes data used to estimate population demographic parameters for an exemplary high-elevation amphibian species, the federally endangered Shenandoah salamander (Plethodon shenandoah). These parameters were entered into a Markov projection model which we used to forecast the future population status of the Shenandoah salamander.
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1D transient numerical simulations with a modified version of the SUTRA model (preliminary code) that accounts for variably-saturated freeze-thaw dynamics (e.g. McKenzie and Voss, 2013) to predict annual alluvial aquifer temperature dynamics using coupled fluid and heat transport physics. The model simulations were run with a modified version of SUTRA_ICE (unreleased) that accomadates a time-variable sinusiodal upper temperature boundary. This data release also includes the source code and Argus One GUI files used to build the models, though this proprietary software is not needed to run the models as described in the upper-level "readme" file.
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Shenandoah National Park, Virginia. Greenstone dike in basement rocks. Dike on Ridge Trail, Old Rag Mountain, about O.4 mile northeast of the summit. Wallrock is Old Rag Granite of Furcron (1934). Figure 15 (left), U.S. Geological Survey Bulletin 1265.
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Shenandoah National Park, Virginia. Columnar jointing in greenstone. Small wavy columns at the top of the cliff above the Appalachian Trail about 0.15 mile north of Hawksbill Gap. Figure 9 (left), U.S. Geological Survey Bulletin 1265.
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A combination of long-term daily temperature records and depth to bedrock measurements were used to parametrize one-dimensional models of shallow aquifer vertical heat transport in Shenandoah National Park, VA, USA. Depth to bedrock can directly influence shallow aquifer flow and thermal sensitivity, but is typically ill-defined along the stream corridor in steep mountain catchments. We employed rapid, cost-effective passive seismic measurements to evaluate the variable thickness of the shallow colluvial and alluvial aquifer sediments along a headwater stream supporting coldwater-dependent brook trout (Salvelinus fontinalis) in Shenandoah National Park. The methods are fully documented in the associated journal...
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Shenandoah National Park, Virginia. Sandstone dikes in greenstone. Outcrop is on the north side of Skyline Drive at mile 47.3 on the south side of Hawksbill Mountain. Sandstone (light gray) displays faint subhorizontal bedding. Greenstone (darker gray) displays a dark chloritic border at the edge of the dike. The knife is about 3 inches long. Figure 11, U.S. Geological Survey Bulletin 1265.


map background search result map search result map Blue Ridge, viewed from the west. Shenandoah National Park, Virginia. No Date. Schistose greenstone along the Appalachian Trail at the base of Little Stony Man Cliffs. Shenandoah National Park, Virginia. No date. Shenandoah National Park, Virginia. Columnar jointing in greenstone. Small wavy columns at the top of the cliff above the Appalachian Trail about 0.15 mile north of Hawksbill Gap. Columnar jointing in greenstone. Shenandoah National Park, Virginia. No date. Shenandoah National Park, Virginia. Sandstone dikes in greenstone. Outcrop is on the north side of Skyline Drive at mile 47.3 on the south side of Hawksbill Mountain. Shenandoah National Park, Virginia. Mud-lump breccia in the outcrop along the Appalachian Trail at the north end of the base of Little Stony Man Cliffs. Greenstone dike in basement rocks. Shenandoah National Park, Page County, Virginia. No Date. Shenandoah National Park Vegetation Mapping Project - Spatial Vegetation Data Version 2.0b 2012 Air and Temperature Data from Shenandoah National Park Air-water temperature data for the study of groundwater influence on stream thermal regimes in Shenandoah National Park, Virginia Seismic data for study of shallow mountain bedrock limits seepage-based headwater climate refugia, Shenandoah National Park, Virginia Total mercury concentrations in dragonfly larvae from U.S. national parks (ver. 9.0, November 2023) Video data for trout abundance estimation Passive seismic data collected along headwater stream corridors in Shenandoah National Park in 2016 - 2020 Mercury Bioaccumulation in US National Parks Using Dragonfly Larvae as Biosentinels, 2009-2018 USGS EcoDrought Stream Discharge, Gage Height, and Water Temperature in Shenandoah National Park, Virginia (ver. 2.0, November 2023) Modeled temperature data developed for study of shallow mountain bedrock limits seepage-based headwater climate refugia, Shenandoah National Park, Virginia: U.S. Geological Survey data release Mercury and biogeochemical parameters in surface water and sediment from U.S. National Parks, 2014-2015 (ver. 2.0, December 2023) Abiotic and biotic factors reduce viability of a high-elevation salamander in its native range Seismic data for study of shallow mountain bedrock limits seepage-based headwater climate refugia, Shenandoah National Park, Virginia Modeled temperature data developed for study of shallow mountain bedrock limits seepage-based headwater climate refugia, Shenandoah National Park, Virginia: U.S. Geological Survey data release Abiotic and biotic factors reduce viability of a high-elevation salamander in its native range 2012 Air and Temperature Data from Shenandoah National Park Passive seismic data collected along headwater stream corridors in Shenandoah National Park in 2016 - 2020 Blue Ridge, viewed from the west. Shenandoah National Park, Virginia. No Date. Schistose greenstone along the Appalachian Trail at the base of Little Stony Man Cliffs. Shenandoah National Park, Virginia. No date. Shenandoah National Park, Virginia. Columnar jointing in greenstone. Small wavy columns at the top of the cliff above the Appalachian Trail about 0.15 mile north of Hawksbill Gap. Columnar jointing in greenstone. Shenandoah National Park, Virginia. No date. Shenandoah National Park, Virginia. Sandstone dikes in greenstone. Outcrop is on the north side of Skyline Drive at mile 47.3 on the south side of Hawksbill Mountain. Shenandoah National Park, Virginia. Mud-lump breccia in the outcrop along the Appalachian Trail at the north end of the base of Little Stony Man Cliffs. Greenstone dike in basement rocks. Shenandoah National Park, Page County, Virginia. No Date. Air-water temperature data for the study of groundwater influence on stream thermal regimes in Shenandoah National Park, Virginia Shenandoah National Park Vegetation Mapping Project - Spatial Vegetation Data Version 2.0b USGS EcoDrought Stream Discharge, Gage Height, and Water Temperature in Shenandoah National Park, Virginia (ver. 2.0, November 2023) Mercury and biogeochemical parameters in surface water and sediment from U.S. National Parks, 2014-2015 (ver. 2.0, December 2023) Mercury Bioaccumulation in US National Parks Using Dragonfly Larvae as Biosentinels, 2009-2018 Total mercury concentrations in dragonfly larvae from U.S. national parks (ver. 9.0, November 2023)