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Airborne electromagnetic (AEM), magnetic, and radiometric data were acquired in late February to early March 2018 along 2,364 line-kilometers in the Shellmound, Mississippi study area. Data were acquired by CGG Canada Services, Ltd. with three different helicopter-borne sensors: the CGG Canada Services, Ltd. RESOLVE frequency-domain AEM instrument that is used to map subsurface geologic structure at depths up to 100 meters, depending on the subsurface resistivity; a Scintrex CS-3 cesium vapor magnetometer that detects changes in deep (hundreds of meters to kilometers) geologic structure based on variations in the magnetic properties of different formations; and a Radiation Solutions RS-500 spectrometer that detects...
Categories: Data;
Tags: GGGSC,
Geology, Geophysics, and Geochemistry Science Center,
Greenwood,
Leflore County,
MRVA, All tags...
Mississippi,
Mississippi Alluvial Plain,
Mississippi River Valley Alluvial aquifer,
Shellmound,
Sunflower County,
Tallahatchie River,
aeromagnetic surveying,
aeroradiometric surveying,
electromagnetic surveying,
electromagnetics,
engineering sciences,
environment,
geophysics,
geoscientificInformation,
geospatial datasets,
groundwater,
hydrogeology,
magnetic anomaly maps,
magnetic field,
magnetics,
radiometrics,
resistivity,
water resources, Fewer tags
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Shallow soil characteristics were mapped near Shellmound, Mississippi, using the DualEM 421 electromagnetic sensor in October 2018. Data were acquired by towing the DualEM sensor on a wheeled cart behind an ATV, with the sensor at a height of 0.432 meters (m) above the ground surface. Approximately 175 line-kilometers of data were acquired over an area of nearly four square kilometers, with 25 m separation between survey lines. Data were manually edited for noise sources such as powerlines or other buried structures, and averaged to regular output soundings every 5 m along survey lines. This data release contains the processed data that have been averaged and culled to produce final resistivity models. Digital data...
Categories: Data;
Tags: GGGSC,
Geology, Geophysics, and Geochemistry Science Center,
Leflore County,
MRVA,
Mississippi, All tags...
Mississippi Alluvial Plain,
Mississippi River Valley Alluvial aquifer,
Shellmound,
Tallahatchie River,
electromagnetic surveying,
electromagnetics,
engineering sciences,
environment,
geophysics,
geoscientificInformation,
groundwater,
hydrogeology,
resistivity,
water resources, Fewer tags
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Shallow soil characteristics were mapped near Shellmound, Mississippi, using the DualEM 421 electromagnetic sensor in October 2018. Data were acquired by towing the DualEM sensor on a wheeled cart behind an ATV, with the sensor at a height of 0.432 meters (m) above the ground surface. Approximately 175 line-kilometers of data were acquired over an area of nearly four square kilometers, with 25 m separation between survey lines. Raw data are provided here.
Categories: Data;
Tags: GGGSC,
Geology, Geophysics, and Geochemistry Science Center,
Leflore County,
MRVA,
Mississippi, All tags...
Mississippi Alluvial Plain,
Mississippi River Valley Alluvial aquifer,
Shellmound,
Tallahatchie River,
electromagnetic surveying,
electromagnetics,
engineering sciences,
environment,
geophysics,
geoscientificInformation,
groundwater,
hydrogeology,
resistivity,
water resources, Fewer tags
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Fire can be a significant driver of permafrost change in boreal landscapes, altering the availability of soil carbon and nutrients that have important implications for future climate and ecological succession. However, not all landscapes are equally susceptible to fire-induced change. As fire frequency is expected to increase in the high latitudes, methods to understand the vulnerability and resilience of different landscapes to permafrost degradation are needed. Geophysical and other field observations reveal details of both near-surface (less than 1 m) and deeper (greater than 1 m) impacts of fire on permafrost along 14 transects that span burned-unburned boundaries in different landscape settings within interior...
Categories: Data;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Active layer thickness,
Alaska,
Borehole nuclear magnetic resonance,
Chatanika,
City of Fairbanks, All tags...
Coldfoot,
Disturbance,
Fire,
GGGSC,
Geology, Geophysics, and Geochemistry Science Center,
MRP,
Mineral Resources Program,
Organic layer thickness,
Permafrost,
Resistivity profiling,
Soils,
Toolik Lake,
environment,
fire damage,
fires,
geoscientificInformation,
permafrost,
resistivity,
soil moisture,
vegetation, Fewer tags
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Fire can be a significant driver of permafrost change in boreal landscapes, altering the availability of soil carbon and nutrients that have important implications for future climate and ecological succession. However, not all landscapes are equally susceptible to fire-induced change. As fire frequency is expected to increase in the high latitudes, methods to understand the vulnerability and resilience of different landscapes to permafrost degradation are needed. Geophysical and other field observations reveal details of both near-surface (less than 1 m) and deeper (greater than 1 m) impacts of fire on permafrost along 14 transects that span burned-unburned boundaries in different landscape settings within interior...
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Active layer thickness,
Alaska,
Borehole nuclear magnetic resonance,
Chatanika,
City of Fairbanks, All tags...
Coldfoot,
Disturbance,
Fire,
GGGSC,
Geology, Geophysics, and Geochemistry Science Center,
MRP,
Mineral Resources Program,
Organic layer thickness,
Permafrost,
Resistivity profiling,
Soils,
Toolik Lake,
environment,
fire damage,
fires,
geoscientificInformation,
permafrost,
resistivity,
soil moisture,
vegetation, Fewer tags
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View more...
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