GroMoPo Metadata for Eastern Wisconsin geochemical model

Authors:

GroMoPo Kyle Compare

Owners:

gromopo_admin

Type:

Resource

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The size of this resource is 1.5 KB

Created:

Feb 08, 2023 at 4:32 p.m.

Last updated:

Feb 08, 2023 at 4:33 p.m.

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Abstract

A finite-difference ground-water flow model linked to a particle-tracking routine was used to determine ground-water flow paths and residence times in the Cambrian-Ordovician sandstone aquifer of eastern Wisconsin. The modeled region was a cross section along an approximate flow line that included the boundary between unconfirmed and confined conditions in the aquifer. Modeling results indicate that lower conductivity units within the sandstone aquiter produce vertically stratified flow in the confined region. These simulation results help explain chemical signatures of ground water in different parts of the aquifer. Three distinct regions of the flow system are identified: the unconfined zone where vertical mixing across the aquifer yields a homogeneous chemistry, the shallow part of the confined zone where sodium and sulfate charged water from the Maquoketa Shale mixes with water that has migrated from the unconfined area, and the deeper region of the confined aquifer, containing older water that entered the system in the unconfined area. Radium activities in ground water increase with distance along flow paths predicted by the simulation, consistent with a low concentration source of solid phase uranium and release of decay products to ground water by desorption and dissolution throughout the sandstone aquifer.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

United States

North Latitude

43.6931°

East Longitude

-88.3276°

South Latitude

43.4753°

West Longitude

-89.0214°

Streets Terrain Satelite

Spatial Extent

Content

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Additional Metadata

Name	Value
DOI	10.1111/j.1745-6584.1991.tb00542.x
Depth	300
Scale	< 10 kmÂ²
Layers	7
Purpose	Groundwater resources;Scientific investigation (not related to applied problem)
GroMoPo_ID	356
IsVerified	True
Model Code	MODFLOW
Model Link	https://doi.org/10.1111/j.1745-6584.1991.tb00542.x
Model Time	SS
Model Year	1991
Model Authors	WEAVER, TR; BAHR, JM
Model Country	United States
Data Available	Report/paper only
Developer Email	NA
Dominant Geology	Siliciclastic sedimentary (sandstones, shales)
Developer Country	Canada
Publication Title	GEOCHEMICAL EVOLUTION IN THE CAMBRIAN-ORDOVICIAN SANDSTONE AQUIFER, EASTERN WISCONSIN .2. CORRELATION BETWEEN FLOW PATHS AND GROUNDWATER CHEMISTRY
Original Developer	No
Additional Information
Integration or Coupling	None of the above
Evaluation or Calibration	Static water levels
Geologic Data Availability	No

How to Cite

GroMoPo, K. Compare (2023). GroMoPo Metadata for Eastern Wisconsin geochemical model, HydroShare, http://www.hydroshare.org/resource/0d6f870c97ce4ae48b6e0c2c68bd4d3a

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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