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Filters Date Range Past year (1) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Benjamin V Miller Water Resources Oklahoma-Texas Water Science Center Scott J Ikard U.S. Geological Survey - ScienceBase More... Tag Types Theme (3) Place (3) USGS Scientific Topic Keyword (2) Harvest Set (3) Tag Schemes None (3) ISO 19115 Topic Category (1) View Results as: JSON ATOM CSV

14.86 km Profiles of the Electric and Self-potential Fields Measured in the Lower Guadalupe River Channel, Texas Interior Gulf Coastal Plain, September 2016 This data release consists of three geophysical data sets measured in the lower Guadalupe River channel, south-central Texas, and one supplementary geophysical data set measured in a laboratory. The lower Guadalupe River is incised into the outcrop of the Carrizo-Wilcox aquifer in south-central Texas. The river and the aquifer are hydraulically connected across the outcrop, although the connectivity is obscured by alluvium and surface-water and groundwater exchange dynamics are currently poorly understood. The data sets were therefore produced to investigate surface-water and groundwater exchange dynamics between the lower Guadalupe River and the Carrizo-Wilcox aquifer, and consist of (1) a 14.86 kilometer (km)... Categories: Data; Tags: Dipole, Electric Resistivity Tomography, Geomorphology, Geophysics, Geophysics, All tags... Gonzalez County, Groundwater, Guadalupe County, Hydraulic Exchange, Hydrogeology, Hydrogeology, Potential Fields, Remote Sensing, Self-potential, Signal Processing, Surface water, Texas, USGS Science Data Catalog (SDC), Water Resources, lower Guadalupe River, Fewer tags Geophysical surveys and geospatial data for Bob Kidd Lake, Washington County, Arkansas This data release consists of three different types of data: including direct current (DC) resistivity profiles, frequency domain electromagnetic (FDEM) survey data, and global navigation satellite system (GNSS) coordinate data of the geophysical measurement locations. A data dictionary is included along with the data and defines all of the table headings, definitions, and units. Earthen dams are common on lakes and ponds, but characteristics of these structures such as construction history, composition, and integrity are often unknown for older dams. Geophysical surveying techniques provide a non-invasive method of mapping their lithology and structure. In particular, DC resistivity and FDEM methods can,... Categories: Data; Tags: Arkansas, Bob Kidd Lake, Direct current resistivity, Earthen dam, Earthen structure, All tags... Electric resistivity tomography, Electrical resistivity, Electromagnetism, Frequency domain electromagnetism, GNSS/GPS data, Geophysical survey, Prairie Grove, USGS Science Data Catalog (SDC), Washington County, biota, Fewer tags Waterborne Self-potential Data, Surface-water Temperature and Conductivity Logging data, and Electric Resistivity Tomography Data Measured at East Fork Poplar Creek, Oak Ridge, Tennessee, January-March 2022. Geophysical data were collected on January 13, 2022, from a reach of East Fork Poplar Creek in Oak Ridge, Tennessee to gain a better understanding of surface water/groundwater exchanges. This data release contains the following types of data: waterborne self-potential (WaSP), and surface -water temperature and conductivity data collected by the U.S. Geological Survey (USGS) from 220-meter (m) long survey reach, stream specific conductance data calculated from surface-water temperature and conductivity, and electric resistivity tomography (ERT) data collected along four linear profiles on the floodplain adjacent to the WaSP survey reach. The ERT data were measured by hydroGEOPHYSICS, Inc. The WaSP logging data were... Categories: Data; Tags: Concentration, Contamination, East Fork Poplar Creek, Electric Resistivity Tomography, Geophysical logging, All tags... Geophysics, Geophysics, Gradient self-potential, Groundwater, Hydrology, Hydrology, Mercury, Oak Ridge, Oak Ridge National Laboratory, Radon, Rivers, Self-potential, Surface water, Surface-water and groundwater exchanges, Surface-water conductivity, Surface-water temperature, Tennessee, USGS Science Data Catalog (SDC), Water Resources, Water quality, Fewer tags