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A Global Hybrid Vs30 Map with a Topographic-Slope-Based Default and Regional Map Insets A Global Hybrid Vs30 Map with a Topographic-Slope-Based Default and Regional Map Insets
Time-averaged shear wave velocity over the upper 30 meters of the earth's surface (Vs30) is a key parameter for estimating ground motion amplification as both a predictive and diagnostic tool for earthquake hazards. A first-order approximation of Vs30 is commonly obtained via a topographic slope-based or terrain proxy due to the widely available nature of digital elevation models...
Nanoscale Molecular Composition of Solid Bitumen from the Eagle Ford Group Across a Natural Thermal Maturity Gradient Nanoscale Molecular Composition of Solid Bitumen from the Eagle Ford Group Across a Natural Thermal Maturity Gradient
Solid bitumen is a petrographically-defined secondary organic matter residue produced during petroleum generation and subsequent oil transformation. The presence of solid bitumen impacts many shale reservoir properties including porosity, permeability, and hydrocarbon generation and storage, amongst others. Furthermore, solid bitumen reflectance is an important parameter for assessing...
Preliminary global database of known and inferred gas hydrate locations Preliminary global database of known and inferred gas hydrate locations
For more than 25 years, the U.S. Geological Survey Gas Hydrates Project has compiled and maintained an internal database of locations where the existence of gas hydrate has been confirmed or inferred in research studies. The existence of gas hydrate was considered confirmed when gas hydrate was recovered by researchers or videotaped from a vehicle (such as a submersible or remotely...
Jonathan Davis Wetland Restoration (BA-20): 2018 land-water classification Jonathan Davis Wetland Restoration (BA-20): 2018 land-water classification
The Louisiana State Legislature created the Coastal Wetlands Planning, Protection and Restoration Act (CWPPRA) in order to conserve, restore, create and enhance Louisiana's coastal wetlands. The wetland restoration plans developed pursuant to these acts specifically require an evaluation of the effectiveness of each coastal wetlands restoration project in achieving long-term solutions to...
Cladophora biomass and supporting data collected in the Great Lakes, 2018 (ver. 2.0, June 2023) Cladophora biomass and supporting data collected in the Great Lakes, 2018 (ver. 2.0, June 2023)
This dataset records Cladophora and associated submerged aquatic vegetation (SAV) biomass collected approximately monthly during the growing season of 2018 at stations located along the U.S. shoreline of Lakes Michigan, Huron, Erie, and Ontario. It also records a variety of supporting data collected at Cladophora measurement stations. These supporting data include: - seasonal time series...
Soil Water Balance Model datasets and models used to evaluate potential recharge to the Floridan Aquifer System, 1895 through 2010 Soil Water Balance Model datasets and models used to evaluate potential recharge to the Floridan Aquifer System, 1895 through 2010
A soil-water balance model (SWB) was developed to estimate potential recharge and irrigation water demand from the groundwater flow system in Florida and parts of Georgia, Alabama, and South Carolina for the period 1895 through 2010. This SWB model executable code detailed in the report SWB A Modified Thornthwaite-Mather Soil-Water-Balance Code for Estimating Groundwater Recharge...
Soil-Water Balance model and datasets used to estimate groundwater recharge Brunswick, New Hanover, and Pender counties North Carolina 1980 through 2016 Soil-Water Balance model and datasets used to estimate groundwater recharge Brunswick, New Hanover, and Pender counties North Carolina 1980 through 2016
Soil water balance model archive for portions of North Carolina. The model was created to estimate recharge to the groundwater flow system in Brunswick, New Hanover, and Pender counties in North Carolina. The development of the model input and output files included in this model archive were created to support a regional groundwater flow model being produced for the surficial, Castle...
Growth of cultured Picocystis strain ML in the presence of arsenic, and occurrence of arsenolipids in these Picocystis as well as biota and sediment from Mono Lake, California Growth of cultured Picocystis strain ML in the presence of arsenic, and occurrence of arsenolipids in these Picocystis as well as biota and sediment from Mono Lake, California
Mono Lake is a hypersaline soda lake rich in dissolved inorganic arsenic with its primary production currently dominated by Picocystis str. ML. We set out to determine if this picoplankter could metabolize inorganic arsenic, and in doing so form unusual arsenolipids (e.g., methylated arsinoyl ribosides) as reported in other saline ecosystems and by halophilic algae. We cultivated...
Data Release associated with Data Series - DOI/GTN-P Climate and Active-Layer Data Acquired in the National Petroleum Reserve-Alaska and the Arctic National Wildlife Refuge, 1998-2019 (ver. 3.0, March 2021) Data Release associated with Data Series - DOI/GTN-P Climate and Active-Layer Data Acquired in the National Petroleum Reserve-Alaska and the Arctic National Wildlife Refuge, 1998-2019 (ver. 3.0, March 2021)
This release provides data collected by the climate monitoring array of the U.S. Department of the Interior on Federal lands in Arctic Alaska over the period August 1998 to July 2019; this array is part of the Global Terrestrial Network for Permafrost (DOI/GTN-P). In addition to presenting data, this release also describes monitoring, data collection, and quality-control methods. The...
Riparian vegetation, topography, sediment quality and river corridor geomorphology in the Lower Virgin River 2010-2017 Riparian vegetation, topography, sediment quality and river corridor geomorphology in the Lower Virgin River 2010-2017
Plant composition, geomorphic conditions and sediment properties before (2010-2012) and after (2015-2017) the arrival of a biocontrol agent (defoliating beetle in the Diorhabda genus) of invasive Tamarix spp. The data contains four csv files: localization (UTM coordinates of the transects), vegetation and geomorphology, species codes and sediment quality
Land Change Monitoring, Assessment, and Projection (LCMAP) Version 1.0 Annual Land Cover and Land Cover Change Validation Tables Land Change Monitoring, Assessment, and Projection (LCMAP) Version 1.0 Annual Land Cover and Land Cover Change Validation Tables
A validation assessment of Land Cover Monitoring, Assessment, and Projection Version 1 annual land cover products (1985-2017) for the Conterminous United States was conducted with an independently collected reference data set. Reference data land cover attributes were assigned by trained interpreters for each year of the time series (1984-2018) to a reference sample of 24,971 randomly...
Sacramento River Basin future daily streamflow and sediment HSPF outputs Sacramento River Basin future daily streamflow and sediment HSPF outputs
This dataset contains the model outputs from the daily Hydrological Simulation Program - FORTRAN (HSPF) model of the Sacramento River Basin, including streamflow and sediment time series from water years 1981-2099. Streamflow time series data are in cubic feet per second, sediment loads are in tons per day, and suspended sediment concentrations are in milligrams per liter.