AndreaBozzo/ceres-open-data-index huggingface dataset:
Horizontal-to-Vertical Spectral Ratio Soundings and Depth-to-Bedrock Data for Geohydrology and Water Quality of the Stratified-Drift Aquifer in West Branch Cayuga Inlet and Fish Kill Valleys, Town of Newfield, Tompkins County, New York, 2011 - 2016

From July 2011 to November 2016, the U.S. Geological Survey, in cooperation with the Town of Newfield and the Tompkins County Planning Department, collected horizontal-to-vertical seismic surveys at 58 locations in the West Branch Cayuga Inlet and Fish Kill valleys to help determine thickness of unconsolidated deposits and depth to bedrock.
The HVSR technique, commonly referred to as the passive-seismic method, is used to estimate the thickness of unconsolidated sediments and the depth to bedrock (Lane and others, 2008). The passive-seismic method uses a single, broad-band three-component (two horizontal and one vertical) seismometer to record ambient seismic noise. In areas that have a strong acoustic contrast between the bedrock and overlying sediments, the seismic noise induces resonance at frequencies that range from about 0.3 to 40 Hz. The ratio of the average horizontal-to-vertical spectrums produces a spectral-ratio curve with peaks at fundamental and higher-order resonance frequencies. The spectral ratio curve (the ratio of the averaged horizontal-to-vertical component spectrums) is used to determine the fundamental resonance frequency that can be used along with an average shear-wave velocity or a power-law regression equation to estimate sediment thickness and depth to bedrock (Lane and others, 2008; Brown and others, 2013; Fairchild and other, 2013; Chandler and others, 2014; and Johnson and Lane, 2016).
The HVSR data presented in this data release was collected at each site for 30 minutes using a Tromino Model TEP-3C1 three-component seismometer. The data was processed with Grilla 2012 version. 6.21 software to 1) remove anthropogenic noise, 2) convert the time-domain data to frequency domain, 3) compute and plot the spectral ratio curve, and 4) determine the resonance frequency.
This data release presents the resonance frequency peaks identified from the HVSR measurements. Also presented are reported depth-to-bedrock data for wells located at or near HVSR data-collection sites in the Town of Newfield for use in comparison of HVSR forward model depths to reported well depths. Raw and processed HVSR data for each HVSR measurement are presented in the attached. The HVSR data-collection sites are designated by a county sequential numbering system (TMHVSR8, TMHVSR9, etc. where TM indicates Tompkins County).
1Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Tags: aquifer, groundwater, new-york, newfield, seismology, tompkins-county, united-states, usgs-5d49cc1fe4b01d82ce8de875
Organization: Department of the Interior
Using turbidity measurements to estimate phosphorus and sediment flux in a Great Lakes Coastal Marsh, in Ohio.

Great Lakes coastal marshes have the potential to filter water coming off of the landscape and remove sediments and nutrients before they reach the lakes.  However, this ability has largely been neutralized as vast areas of coastal wetlands have been isolated behind dikes; while at the same time the Great Lakes continue to suffer from excess phosphorus loading.  In this study we used high-frequency measurements of discharge and turbidity to estimate sediment and phosphorus retention in a formerly diked coastal wetland.  We found sediment and phosphorus retention to be episodic and highly related to fluctuations in water level.  Low water levels in Lake Erie in late 2012 resulted in low retention in the wetland, but as water levels rose in the first half of 2013 sediment and phosphorus retention increased.  Overall, the reconnected wetland was a sink for both total phosphorus and suspended sediment, and locally reduced phosphorus loading rates to Lake Erie.

Tags: hydrology, lake-erie, ottawa-national-wildlife-refuge-lucas-county-ohio, phosphorus, turbidity, usgs-5d49c930e4b01d82ce8de83c, wetland-functions
Organization: Department of the Interior
FaSTMECH model water surface elevation and velocities for the Lower Sheboygan River, Wisconsin

In 2011-12, the U.S. Geological Survey conducted a study of the and hydrogeomorphic history and hydrodynamic characteristics of the lower 5 kilometers of the Sheboygan River, a tributary to Lake Michigan in eastern Wisconsin. The hydrogeomorphic history and stability of an ecologically important island complex in the Sheboygan River, the Wildwood Islands, was studied to determine the potential effects of inundation of island surfaces on riparian vegetation and potential areas of erosion and deposition. A two-dimensional (2D) channel hydraulics model was developed for simulating the interaction of riverine flows with varying lake levels and seiche effects. This dataset contains model input and output associated with 10 scenarios involving combinations of Lake Michigan water surface elevations and Sheboygan River discharge  values.

Tags: environment, geoscientificinformation, hydrodynamics, inlandwaters, mathematical-simulation, sheboygan, sheboygan-county, sheboygan-river, usgs-5d49c4e3e4b01d82ce8de7ee, wisconsin
Organization: Department of the Interior
Sediment Chemistry and Physical Properties from Sediments in the Aztec Drinking Water Reservoir #1

The elemental concentration over time of sediments from four trenches from the Aztec drinking water reservoir #1.  The source of water to the reservoir is the Animas River, which has historical mining sites in the watershed.  In order to evaluate the geochemical record in the sediments, several types of data were collected.  Bulk chemical analysis of sediments with depth in the reservoir as well as X-ray fluorescence measurements provide information about the sediment total chemistry.  Batch experiments where sediments are reacted with different reagents provide information about the mobility of major and trace elements from the sediments into the reservoir water or environment. Sediment field descriptions provide information about the grain size, degree of sorting, redox conditions, and reaction with hydrochloric acid or hydrogen peroxide.

Tags: aztec-nm, biota, new-mexico, reservoir, sediment-chemistry, usgs-5d4897aee4b01d82ce8ddf04
Organization: Department of the Interior
Rock and Calcite Chemistry Within and Surrounding Fort Stanton-Snowy River Cave

The Fort Stanton-Snowy River cave system (FSC) is located in Lincoln County, New Mexico in the upper Rio Hondo Basin.  The entrance of the cave is on Bureau of Land Management (BLM) land near the site of historic Fort Stanton.  In 2001, the Snowy River Formation was discovered. This formation, a  white calcite deposit that lines a streambed within the cave, is now considered to be the largest cave formation in the world. Initially thought to be hydrologically inactive, the Snowy River passage has intermittently flooded in response to large precipitation events such as the passage of Hurricane Dolly in 2008 and a large spring snowmelt runoff in 2010. There is  interest in determining the source of the water that flows through the cave and deposits the Snowy River Formation. These data represent the rock chemistry from the geologic units surrounding the cave and chemistry from a calcite core drilled into the Snowy River Formation.

Tags: biota, cave-karst-rock-chemistry, usgs-5d4895e9e4b01d82ce8ddef7
Organization: Department of the Interior
Discharge and sediment data for selected tributaries to the Anacostia River, Washington, District of Columbia, 2003-18

Data release consists of five comma delimited text files containing discharge and sediment data for five gaged tributaries to the Anacostia River in Washington, District of Columbia. Data were collected from 2003 through 2018.

Tags: anacostia-river, district-of-columbia, hickey-run, inlandwaters, lower-beaver-dam-creek, northeast-branch-anacostia-river, northwest-branch-anacostia-river, usgs-5d487faae4b01d82ce8dddc4, washington-d-c, watts-branch
Organization: Department of the Interior
Monarch densities in burned or grazed Minnesota remnant prairie, 2016-2017

We studied the direct and indirect impacts of using fire and grazing to manage remnant prairies on adult monarch abundance. This dataset consists of data collected at 10 burned and 10 grazed remnant Minnesota prairies during the summers of 2016 and 2017. We measured Asclepias spp. (milkweeds, monarch host plants) frequency, forb frequency, and adult monarch butterfly abundance at sites owned and managed by the Minnesota DNR, U.S. Fish and Wildlife Service, The Nature Conservancy, and private landowners.

Tags: asclepias, biota, cattle-grazing, danaus-plexippus, grassland-management, milkweeds, monarch, monarch-butterfly, prescribed-fires, tallgrass-prairies, usgs-5d487e82e4b01d82ce8dddb1
Organization: Department of the Interior
Identification of Acara (Cichlidae: Cichlasoma) established in Florida, USA

The Black Acara, Cichlasoma bimaculatum (Linnaeus 1758), first reported as introduced to Florida in 1965, is distributed throughout Florida’s southern peninsula. Examination of live and preserved museum specimens of acara reveal a second species, the Chanchita, Cichlasoma dimerus (Heckel 1840) present in Florida since at least July 2000. A review of the relevant literature coupled with an examination of acara collected in Florida show the Black Acara and the Chanchita are most easily distinguished by number of anal fin spines, body and fin color, caudal fin pattern, and degree of pigment on the rim of the scales of the head and nape. The presence of Cichlasoma dimerus in central Florida springs habitat and the substantial spread of this previously unreported introduced species throughout multiple watersheds should be of potential concern to natural resource managers.

Tags: nonindigenous-species, usgs-5d486cf2e4b01d82ce8ddcd6
Organization: Department of the Interior
Inversion models, Iliamna Volcano, Alaska June 2012

Airborne electromagnetic (AEM) and magnetic survey data were collected during June 2012 along 556 line-kilometers over Iliamna Volcano, Alaska. These data were collected in support of alteration and volcano flank instability mapping as part of the USGS Volcano Hazards Program. Data were acquired by SkyTEM Survey ApS SkyTEM304 system with the Soloy Helicopters Eurocopter Astar 350 B3 and Bell 407 dual-moment, time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer with Kroum KMAG4 counter. The survey was flown at a nominal flight height of 30 m above terrain along block-style lines with a nominal spacing of 250 m. The survey was designed to cover the summit and flanks of Iliamna volcano and includes transit lines east of the volcano which provide additional information on nearby structures and glacial thickness and resistivity. There are data gaps near Iliamna’s summit due to poor flight visibility.  
Deterministic laterally and spatially constrained inversions of the processed airborne electromagnetic data were developed using the AarhusINV code (Auken et al. 2014, https://doi.org/10.1071/EG13097) implemented in Aarhus Workbench software. Spatially constrained inversion was used over the main survey grid area and laterally constrained inversions were used for transit lines east of the main grid. Inversion parameters were selected by running a series of test models with varying starting model resistivity values, layer discretization, horizontal/lateral constraints, and other inversion parameters. A smooth 40-layer fixed-depth inversion model was developed with layer thickness increasing with depth (see model data for exact thicknesses). Moderate vertical and lateral constraints on resistivity were used with values of 2.0 and 1.5, respectively. An automatically determined starting model was used. Sensor altitude was treated as a free parameter after the 5th iteration. The final model parameters described above were selected because they best represented the physical understanding of the system and minimized data misfit. 
The data provided include spatially constrained and laterally constrained inverted resistivity models and plotted depth sections along all flight lines. Digital data are described in the data dictionary; additional details regarding data inversion are described in the metadata processing steps.

Tags: aeromagnetic-surveying, alaska, electromagnetic-surveying, geology-geophysics-and-geochemistry-science-center, geophysics, geoscientificinformation, geospatial-datasets, gggsc, hazards, iliamna-volcano, kenai-peninsula, landslides, resistivity, u-s-geological-survey, usgs, usgs-5d485fd5e4b01d82ce8ddc12, usgs-mineral-resources-program, usgs-volcano-hazards-program, volcanology
Organization: Department of the Interior
Magnetotelluric data from the Northwest Geysers, 2017, station gz12

This dataset consists of 42 magnetotelluric (MT) stations collected in 2017 in the Northwest Geysers, CA. The U.S. Geological Survey acquired these data as part of a project to image the heat source in the Northwest Geysers.  Support was from the U.S. Geological Survey's Volcano Hazards Program.

Tags: apparent-resistivity, california, cenozoic, earth-magnetic-field, electromagnetic-surveying, geology-minerals-energy-and-geophysics-science-center, geophysics, geoscientificinformation, geothermal, gmegsc, impedance, lake-county, magnetotelluric-surveying, magnetotellurics, mesozoic, mt, napa-county, phase, sonoma-county, the-geysers, time-series, tipper, usgs-5d5f324be4b01d82ce985091, vhp, volcano-hazards-program
Organization: Department of the Interior
Processed airborne electromagnetic data Iliamna Volcano, Alaska June 2012

Airborne electromagnetic (AEM) and magnetic survey data were collected during June 2012 along 556 line-kilometers over Iliamna Volcano, Alaska. These data were collected in support of alteration and volcano flank instability mapping as part of the U.S. Geological Survey (USGS) Volcano Hazards Program. Data were acquired by SkyTEM Survey ApS SkyTEM304 system with the Soloy Helicopters Eurocopter Astar 350 B3 and Bell 407 dual-moment, time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer with Kroum KMAG4 counter. The survey was flown at a nominal flight height of 30 meters (m) above terrain along block-style lines with a nominal spacing of 250 m. The survey was designed to cover the summit and flanks of Iliamna volcano and includes transit lines east of the volcano which provide additional information on nearby structures and glacial thickness and resistivity. There are data gaps near Iliamna’s summit due to poor flight visibility. 
Minimally processed binary AEM data received from the contractor were imported into the Aarhus Workbench software (Aarhus Geosoftware, Aarhus, Denmark) and processed. Filters were applied to inclinometer and spatial positioning data to smooth raw data and remove sensor drop outs. Altimeter data were filtered, smoothed, and manually edited to correct false altitudes associated with trees and other obstacles, resulting in processed altitude representative of the distance between the AEM sensor airframe and bare earth. Ground surface elevations were imported from Alaska's 5 m IFSAR Division of Geological and Geophysical Survey elevation dataset (DGGS, 2020, https://elevation.alaska.gov/). Electromagnetic data were averaged using a filter width of 4 seconds applied to both high moment and low moment data. Low-signal data were removed from the averaged data through a combination of filters and manual culling.

Tags: aeromagnetic-surveying, alaska, electromagnetic-surveying, geology-geophysics-and-geochemistry-science-center, geophysics, geoscientificinformation, geospatial-datasets, gggsc, hazards, iliamna-volcano, kenai-peninsula, landslides, resistivity, u-s-geological-survey, usgs, usgs-5d485e83e4b01d82ce8ddc07, usgs-mineral-resources-program, usgs-volcano-hazards-program, volcanology
Organization: Department of the Interior
Point cloud derived from UAS imagery for Bluffton Native Habitat Waterway, Indiana, 20160907

A point cloud data set (.las) of the Bluffton [Indiana] Native Habitat Waterway bottomland restoration site was generated from UAS imagery to complement field vegetation data collected in 2015 and 2016. Aerial images were collected on 07 September, 2016 using Unoccupied Aerial Systems (UAS, or "drones"). Data were processed using photogrammetry to generate a three dimensional point cloud that identifies pixels from multiple images representing the same object and calculates the x, y, and z coordinates of that object/pixel. The point cloud was processed to create a digital surface model of the site (6 cm resolution). Finally, source images were stitched together based on shared pixels and orthoganally adjusted to the digital surface model to create a high resolution (approximately 3 cm) orthoimage for the study area.

Tags: bluffton, elevation, imagerybasemapsearthcover, indiana, usgs-5d483be0e4b01d82ce8dd378, wells-county
Organization: Department of the Interior
Digital surface model derived from UAS imagery for Bluffton Native Habitat Waterway, Indiana, 20160907

A high resolution digital surface model (.tif) of the Bluffton [Indiana] Native Habitat Waterway bottomland restoration site was generated to complement field vegetation data collected in 2015 and 2016. Aerial images were collected on 07 September, 2016 using Unoccupied Aerial Systems (UAS, or "drones"). Data were processed using photogrammetry to generate a three dimensional point cloud that identifies pixels from multiple images representing the same object and calculates the x, y, and z coordinates of that object/pixel. The point cloud was processed to create a digital surface model of the site (6 cm resolution), representing the continuous surface of the uppermost reflective surface (i.e., data have not been filtered for vegetation classes or height). Finally, source images were stitched together based on shared pixels and orthoganally adjusted to the digital surface model to create a high resolution (approximately 3 cm) orthoimage for the study area.

Tags: bluffton, elevation, imagerybasemapsearthcover, indiana, usgs-5d483760e4b01d82ce8dd358, wells-county
Organization: Department of the Interior
Influence of dissolved organic carbon on the acute toxicity of copper to white sturgeon (Acipenser transmontanus) and the cladoceran (Ceriodaphnia dubia)-Data

This dataset characterizes the acute toxicity of copper and zinc to white sturgeon (~30 days post hatch) and cladocerans (less thab 24 hours old) in waters with varying dissolved organic carbon (DOC) by conducting 96-hour white sturgeon and 48-hour cladoceran copper and zinc exposures in test waters with natural DOC (from pond water) at concentrations ranging from 0.5 to 5.5 mg/L.

Tags: biota, crustacean, dissolved-metals, dissolved-organic-carbon, fish, mine-tailings, mining-hazards, usgs-5d4834bbe4b01d82ce8dd354, water-quality
Organization: Department of the Interior
Raw survey data Iliamna Volcano, Alaska June 2012

Airborne electromagnetic (AEM) and magnetic survey data were collected during June 2012 along 556 line-kilometers over Iliamna Volcano, Alaska. These data were collected in support of alteration and volcano flank instability mapping as part of the U.S. Geological Survey (USGS) Volcano Hazards Program. Data were acquired by SkyTEM Survey ApS SkyTEM304 with the Soloy Helicopters Eurocopter Astar 350 B3 and Bell 407 dual-moment, time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer with Kroum KMAG4 counter. The survey was flown at a nominal flight height of 30 meters (m) above terrain along block-style lines with a nominal spacing of 250 m. The survey was designed to cover the summit and flanks of Iliamna volcano and includes transit lines east of the volcano which provide additional information on nearby structures and glacial thickness and resistivity. There are data gaps near Iliamna’s summit due to poor flight visibility. Data acquisition, minimal processing, and initial inversions were conducted by SkyTEM Survey ApS and described in detail in the contractor’s report. The AEM depth of investigation varied with subsurface resistivity and averaged approximately 338 m. 
Raw digital data from production flights are provided and described in the data dictionary. Please see https://www.sciencebase.gov/catalog/item/5c8fb915e4b093882452b34a for the complete data package received from the contractor and the contractor’s report.

Tags: aeromagnetic-surveying, alaska, electromagnetic-surveying, geology-geophysics-and-geochemistry-science-center, geophysics, geoscientificinformation, geospatial-datasets, gggsc, hazards, iliamna-volcano, kenai-peninsula, landslides, resistivity, u-s-geological-survey, usgs, usgs-5d47a6f8e4b01d82ce8dd0af, usgs-mineral-resources-program, usgs-volcano-hazards-program, volcanology
Organization: Department of the Interior
CoSMoS (Coastal Storm Modeling System) Central California v3.1 flood-hazard projections: average conditions in San Mateo County

This data contains geographic extents of projected coastal flooding, low-lying vulnerable areas, and maximum/minimum flood potential (flood uncertainty) associated with the sea-level rise (SLR) and storm condition indicated.
The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of kilometers) of storm-induced coastal flooding and erosion for both current and future sea-level rise (SLR) scenarios. Projections for CoSMoS v3.1 in Central California include flood-hazard information for the coast from Pt. Conception to the Golden Gate. Outputs include SLR scenarios of 0.0, 0.25, 0.5, 0.75, 1.0, 1.5, 2.0, 2.5, 3.0, and 5.0 meters; storm scenarios include background conditions (astronomic spring tide and average atmospheric conditions) and simulated 1-year/20-year/100-year return interval coastal storms. Methods and processes used in Central California are replicated from and described in O'Neill and others (2018).Please read metadata and inspect output carefully.  Data are complete for the information presented.
      

Tags: beaches, central-california, central-california-coast, climate-change, climatologymeteorologyatmosphere, cmhrp, coastal-and-marine-hazards-and-resources-program, coastal-erosion, earth-sciences, effects-of-climate-change, erosion, extreme-weather, floods, hazards-planning, mathematical-modeling, ocean-waves, ocean-winds, oceans, pacific-coastal-and-marine-science-center, pcmsc, physical-habitats-and-geomorphology, san-mateo-county, sea-level-change, sea-level-rise, state-of-california, storm-surge, storms, u-s-geological-survey, usgs, usgs-5d44bdc7e4b01d82ce8dbe8b, water-depth, waves, wind
Organization: Department of the Interior