Item talk:Q318989
From geokb
{
"DOI": {
"doi": "10.5066/p9kpk3uj",
"identifiers": [],
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"name": "Bethany L Burton",
"nameType": "Personal",
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"United States Geological Survey"
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"name": "Ryan F Adams",
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"name": "Burke J Minsley",
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"name": "Michael D Pace",
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{
"name": "Wade Kress",
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{
"name": "James (J.R) R. Rigby",
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"United States Geological Survey"
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{
"name": "Ashley M Bussell",
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"titles": [
{
"title": "Airborne electromagnetic, magnetic, and radiometric surveys of the Mississippi Alluvial Plain and Chicot Aquifer System, March 2018 and May - August 2021"
}
],
"publisher": "U.S. Geological Survey",
"container": {},
"publicationYear": 2024,
"subjects": [],
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"dates": [],
"language": null,
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"descriptions": [
{
"description": "Airborne geophysical surveys were acquired in March 2018 and May 25 through August 7, 2021 using a helicopter-based platform. These surveys were collected along 10,706 line-kilometers (line-km) within selected areas of the Mississippi Alluvial Plain (MAP) and the Chicot Aquifer System in the southeastern United States. The airborne geophysical surveys include electromagnetic, magnetic, and radiometric sensor data collected in rivers and levees throughout the two areas to evaluate groundwater and surface-water interaction, riverine ecosystems, and infrastructure.\n\nThis data release contains three child items that provide:\n\nMinimally processed (raw) data supplied by the airborne contractor (Xcalibur Multiphysics) for all three sensors along all flight lines: Airborne electromagnetic, magnetic, and radiometric surveys of the Mississippi Alluvial Plain and Chicot Aquifer System, March 2018 and May - August 2021: Raw Data\nFully processed electromagnetic data: Airborne electromagnetic, magnetic, and radiometric surveys of the Mississippi Alluvial Plain\u00a0and Chicot Aquifer System, March 2018 and May - August 2021: Processed Data\nFinal inverted resistivity models: Airborne electromagnetic, magnetic, and radiometric surveys of the Mississippi Alluvial Plain\u00a0and Chicot Aquifer System, March 2018 and May - August 2021: Resistivity Models\n\nSupporting documentation contained in this data release include:\n\nContractor's report- Description of data acquisition and minimal processing as conducted by Xcalibur Multiphysics (Airborne Survey Contractor).\n\n\nOrganization:\nThe data files contained in this release are broken up according to the three main objectives of these surveys:\u00a0 1) River surveys along the thalweg of major rivers within the MAP and the Chicot Aquifer extents; 2) Levee surveys along the Mississippi and Arkansas rivers from Cairo, IL to Baton Rouge, LA and northwest from the confluence of the Mississippi and Arkansas rivers to Pine Bluff, AR; and 3) Gridded products focused on gravel bars within the Mississippi River from Helena, MS to the confluence with the Arkansas River.\n\nData were collected on the following 16 rivers:\n\nRivers within the MAP boundary:\u00a0 Black, White, Big Sunflower, Little Sunflower, Ouachita, Tensas, Obion, Saline, Little Red, and Bogue Phalia.\nRivers within the Chicot Aquifer extent:\u00a0 Mermentau, Calcasieu, Sabine, Vermillion, Bayou Teche, and Bayou Lacassine.\n\n\nLevee Surveys:\nAlong selected reaches of the Mississippi and Arkansas Rivers, levee survey lines were flown along the toe of the levee both on the side adjacent to the river and on the side opposite the river.\u00a0 In addition, where possible, a third line was flown 91m (300 feet) offset from the toe of the levee opposite to the river. Additional processing was done on all levee lines and is described in the data dictionaries and processing step sections of the metadata included in the \u201cProcessed Data\u201d and \u201cResistivity Models\u201d child items of this data release.\n\nSeven gridded surveys were also collected:\n\nMississippi River gravel bars:\u00a0\n\t\n250 m Line Spacing\n\t\t\n\u00a0Prairie Point\n\u00a0Island 63\n\u00a0Crumrod\n\n\n100 m Line Spacing\n\t\t\nWhite River\n\n\n\n\n\u00a0\u00a0Melton Grid:23 line-km at a 100 m line spacing over a site near Minter City, MS.\n\u00a0 AR OSL Grid: 268 line-km at a 500 m spacing over a series of the drill core locations near Paragould, AR.\n\u00a0\u00a0Raccourci Grid:100 line-km at variable spacings over Raccourci Old River, a relic oxbow near Batchelor, LA.\n\n\nAdditional Data:\nA dataset collected on levees near Greenville, Mississippi, in March 2018 is also included in this data release.\u00a0 The survey includes four lines parallel to and over the levee for a total of 27 line-km. This dataset was collected as an evaluation of the technical approach used on the more comprehensive surveys in the MAP and Chicot Aquifer extents. This dataset contains AEM data only (magnetic and radiometric data were not collected).\n\nAdditional details on flight line numbers and citations for the various methods used in the collection and processing of the radiometric data are included in the supplemental section.\n\u00a0\n\u00a0",
"descriptionType": "Abstract"
}
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"created": "2024-04-24T18:31:58Z",
"registered": "2024-04-24T18:31:58Z",
"published": null,
"updated": "2024-04-29T17:45:56Z"
}
}
