Associate Center Director
Lower Mississippi-Gulf Water Science Center
Email:
jrigby@usgs.gov
Office Phone:
662-202-7777
ORCID:
0000-0002-5611-6307
Supervisor:
Rodney R Knight
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Datasets are inputs and outputs of Aquaculture and Irrigation Water Use Model (AIWUM) 2.0. AIWUM 2.0 employs remote sensing data sets and machine learning utilizing Distributed Random Forests, an ensemble machine learning algorithm to estimate annual and monthly groundwater use for irrigation and aquaculture (2014–20) throughout this region at 1 km resolution, using annual pumping data from flowmeters in Mississippi and real-time flowmeters in Arkansas, Louisiana, Mississippi, Missouri, and Tennessee. Aquaculture and irrigation estimates contained in this data release are representative of groundwater withdrawal for six different categories: aquaculture, cotton, corn, rice, soybeans, and other crops. Model results...
Categories: Data;
Tags: AIWUM,
Arkansas,
Distributed Random Forests,
Louisiana,
Mississippi, All tags...
Missouri,
Tennessee,
USGS Science Data Catalog (SDC),
aquaculture,
groundwater,
irrigation,
water use, Fewer tags
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The Mississippi Alluvial Plain (MAP) has become one of the most important agricultural regions in the US, and it relies heavily on a groundwater system that is poorly understood and shows signs of substantial change. The heavy use of the available groundwater resources has resulted in substantial groundwater-level declines and reductions in baseflow in streams within the MAP. These impacts are limiting well production and threatening future water availability for the region. On average it is estimated that over 9 billion gallons per day of groundwater are withdrawn for irrigation, supporting agricultural production. Agricultural interests in the region are aware of the economic and environmental costs that may come...
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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...
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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The Mississippi River Valley alluvial aquifer (“alluvial aquifer”) is one of the most extensively developed aquifers in the United States. The alluvial aquifer is present at the land surface in parts of southeastern Missouri, northeastern Louisiana, western Mississippi, western Tennessee and Kentucky near the Mississippi River, and throughout eastern Arkansas. Historical (1940–2006) and recent (2019–20) aquifer-test datasets were compiled to model transmissivity and hydraulic conductivity of the alluvial aquifer from recent (2018–19) airborne electromagnetic (AEM) survey data. This data release contains the aquifer-test and geophysical data along with computer codes written in Matlab version R2014a syntax used to...
Categories: Data;
Tags: Aeromagnetic surveying,
Aeroradiometric surveying,
Aquifer test,
Arkansas,
Dar Zarrouk parameters, All tags...
Electric resistivity,
Electric–hydraulic relations,
Electromagnetic surveying,
Electromagnetics,
Engineering sciences,
Geoelectric parameters,
Geophysics,
Geophysics,
Geospatial datasets,
Groundwater,
Hydraulic conductivity,
Hydrogeology,
Hydrology,
Illinois,
Kentucky,
Longitudinal conductance,
Louisiana,
Lower Mississippi Gulf Water Science Center,
Magnetic field,
Magnetics,
Mean electric resistivity,
Mississippi,
Mississippi Alluvial Plain,
Mississippi River,
Mississippi River Valley Alluvial aquifer,
Missouri,
Oklahoma-Texas Water Science Center,
Petrophysical relations,
Pump Test,
Radiometrics,
Resistivity,
Slug Test,
Tennessee,
Transmissivity,
Transverse resistance,
USGS Science Data Catalog (SDC),
Water Availability and Use Science Program,
Water Resources,
Water resources, Fewer tags
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