Filters: Tags: {"scheme":"Common geographic areas"} (X) > partyWithName: National Research Program (X)
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This dataset contains measurements of dissolved hydrocarbons in various water sources, as well as ancillary raw calibration data showing the stability of the gas chromatograph with an atomic emission detector and flame ionization detector (GC-AED-FID) analytical system over time. Across multiple studies, samples from tap water, groundwater, surface water, springs, mine outflows, and blank materials were analyzed using this system over a period from 2014 to 2017, comprising 172 samples analyzed. In addition to water samples, 183 calibrations conducted over the same period of time are included to document the stability of the GC-AED-FID system over time. The target analytes in this study were: methane (CH4), ethane...
Categories: Data;
Tags: AED,
Atomic Emission Detector,
Energy Resources,
FID,
Flame Ionization Detector,
This dataset includes mercury and other constituent concentration and physical properties data for seven deep sediment profiles (ranging from 79 cm to 214 cm in length) collected from the thalwag of Alviso Slough, a major tributary to South San Francisco Bay (California, USA). Field sampling occurred during May 2012 (4 sites) and January 2016 (3 sites). Each profile was comprised of 1–4 core sub-sections, which were collected from adjacent boreholes with 10–18 cm of vertical overlap. This data product includes two data tables (*.csv): 1) ‘T1_ALSL_DC_Sed_Data.csv’, the deep core analytical results; 2) ‘T2_ALSL_DC_QA_Data.csv’, quality assurance data. The two image files, ‘ALSL_DC_Log_2012.pdf’ and ‘ALSL-DC_Log_2016.pdf’,...
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Alviso Slough,
San Francisco Bay,
South Bay Salt Ponds,
USGS Science Data Catalog (SDC),
biogeochemistry,
Water chemistry data for samples collected in 2016 in the Wolf Creek and Buffalo Creek watersheds in West Virginia. The dataset includes stream characteristics including flow and location information for sampling sites.
Categories: Data;
Tags: Environmental Health,
USGS Science Data Catalog (SDC),
United States,
Water Quality,
West Virginia,
This release contains data from field and laboratory tests conducted by the USGS Groundwater Dating Laboratory between 2014 and 2017 during the development of a new dissolved and gas phase carbon dioxide sensor. The release also contains results of calibration, intercomparison, temperature, humidity, and stability experiments, as well as monitoring studies of CO2 in soil surface gas in the Amargosa Desert during the Toxic Substances Hydrology Amargosa Desert Research Site (ADRS) project, and measurements of dissolved CO2 (pCO2) in Upper Klamath Lake, in laboratory plant mesocosm studies at USGS headquarters in Reston, Virginia, as well as in creeks and streams in Northern Virginia.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Amargosa Desert, NV,
Climatology,
Environmental Health,
Fairfax County,
Geochemistry,
A long-term study of the geomorphic history of the lower Rio Puerco arroyo in north-central New Mexico included the collection of high-precision (Real-time kinematic) GPS survey data (2002, 2007, 2010, and 2014), registration and rectification of historical aerial photographs (1935, 1950s, 1970s, and 1996), an aerial LiDAR survey (2005) with collection of digital imagery, and acquisition of post-flood (2006) satellite imagery. The Rio Puerco is a single-thread, meandering stream inset within an arroyo located in semiarid north-central New Mexico. The study reach extent is from the confluence with the Rio San Jose 67 km downvalley to the Rio Puerco streamgage near Bernardo, NM. Arroyo and channel geomorphic features...
Data release, including sedimentation, inorganic nutrient release, pre-restoration soil physico-chemistry, post-restoration soil physico-chemistry, and GPS location of plots.
These geospatial data sets were developed as part of a new analysis of all known current and historical rain gages in the Luquillo Mountains, Puerto Rico published in the journal article Murphy, S.F., Stallard, R.F., Scholl, M.A., Gonzalez, G., and Torres-Sanchez, A.J., 2017, Reassessing rainfall in the Luquillo Mountains, Puerto Rico: Local and global ecohydrological implications: PLOS One 12(7): e0180987, p. 1-26, https://doi.org/10.1371/journal.pone.0180987. That article provides a revised map of mean annual precipitation developed using elevation regression functions and residual interpolation, and that map is presented here in a raster file. Most previous forest- and watershed-wide estimates of precipitation...
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Caribbean Islands,
Climatology,
Cuchilla el Duque,
El Yunque National Forest,
Icacos watershed,
This data set archives all inputs, outputs and scripts needed to reproduce the findings of W.H. Farmer and S. Levin in the 2017 Journal of the American Water Resources Association article entitled “Characterizing Uncertainty in Daily Streamflow Estimates at Ungauged Locations in Support of the Massachusetts Sustainable Yield Estimator”. Input data includes observed streamflow values, in cubic feet per second, for 66 streamgages in and around Massachusetts from 01 October 1960 through 30 September 2004. Cross-validated streamflows, in cubic feet per second, and estimated correlations are included for all basin pairs as archived by Archfield et al. (2010; USGS SIR 2009–5227). Comma-separated-values files contain output...
Categories: Data;
Types: Citation;
Tags: Massachusetts,
New England,
USGS Science Data Catalog (SDC),
Water Resources,
streamflow modeling
1: Model Archive: Simulation of Rhodamine Dye Concentration and Larval Drift, Kootenai River, Idaho. This archive contains results of lagrangian particle-tracking (LPT) simulations of both the dispersal of rhodamine dye and larval drift. The LPT model is a research effort and the simulations here provide some of the first experimental validation of the results for dispersal of a conservative constituent (Rhodamine WT-20). The larval drift simulations however have not been validated and the results should be viewed in this context. The simulations may contain 20 - 30 Gb of results. The archive is split into child-items to help distinguish the individual components of the archive and make downloading of large files...
A study of arroyo evolution in northern New Mexico (Friedman and others, 2015) assessed geomorphic change in the Chaco Wash arroyo from the 1930s to 2000. As part of this study, in October 2000 a trench was excavated across the arroyo bottom and a high-precision (Real-time kinematic) GPS survey was conducted. GPS survey data were used to georeference a 1930s topographic map and to identify key geomorphic features, including the tops of the arroyo walls and the channel thalweg. Linear features were mapped in a GIS for use in extracting channel thalweg profiles, an arroyo cross section, and arroyo widths (1930s and 2000) as a function of distance down-valley. These features have been converted to shapefiles included...
Chloropyron maritimum subsp. maritimum population counts at Sweetwater Marsh National Wildlife Refuge, California, and tide and weather data from San Diego, California, are used to explain interannual variation in Chloropyron counts and to predict past population counts.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Ecology,
High Salt Marsh,
San Diego,
Southern California Bight,
USGS Science Data Catalog (SDC),
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