GroMoPo Metadata for Manas/Brahmaputra River arsenic model

Authors:

GroMoPo Daniel Kretschmer

Owners:

gromopo_admin

Type:

Resource

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The size of this resource is 1.4 KB

Created:

Feb 08, 2023 at 3:53 p.m.

Last updated:

Feb 08, 2023 at 3:54 p.m.

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Abstract

Arsenic contaminated shallow aquifers evaluation, mitigation, and management strategies are the challenging task to all the hydrologist and provide a safe drinking water demand in the Holocene age, alluvial aquifers. To manage and mitigate such problems, we used numerical groundwater modeling software (GMS 10.2), for the development of 3D transient state predictive (groundwater flow and contaminant transport) conceptual model for two topographically different arsenic contaminated regions. The models were built by using the measured hydro-geological data, empirical values, and equations. Groundwater flow calibration, sensitivity analyses, and validation were performed for each soil parameters, varying boundary conditions and for alternate meteorological scenarios. The MODFLOW results suggested that, the distribution of As contaminant was directly controlled by the complex hydrostratigraphy, surface water bodies and indirectly controlled by the change in meteorological conditions. The MT3DMS model, for As contaminant transport, used for the assessment of shallow and deeper aquifers. The results showed that the downward movement of As has made the deeper aquifer unsafe for drinking water and irrigation purposes. However, the aquifers and regions with high flushing capability, negligible vertical hydraulic conductivity can be delineated as As safe groundwater source, irrespective of their sediment color. Therefore, for the geogenic source of As, both the simulation results inferred that to estimate and mitigate As contaminant groundwater aquifers or regions, the numerical modeling solution is a technically viable means an effective decision-making tool.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

India

North Latitude

26.7811°

East Longitude

91.0193°

South Latitude

26.1226°

West Longitude

90.2061°

Streets Terrain Satelite

Spatial Extent

Content

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Additional Metadata

Name	Value
DOI	10.1016/j.jenvman.2018.08.057
Depth
Scale
Layers	15
Purpose	Groundwater contamination
GroMoPo_ID	329
IsVerified	True
Model Code	MODFLOW
Model Link	https://doi.org/10.1016/j.jenvman.2018.08.057
Model Time
Model Year	2019
Model Authors	Sathe, SS; Mahanta, C
Model Country	India
Data Available	Report/paper only
Developer Email	s.sathe@iitg.emet.in
Dominant Geology	Unconsolidated sediments
Developer Country	India
Publication Title	Groundwater flow and arsenic contamination transport modeling for a multi aquifer terrain: Assessment and mitigation strategies
Original Developer	No
Additional Information
Integration or Coupling	Solute transport
Evaluation or Calibration
Geologic Data Availability	No

How to Cite

GroMoPo, D. Kretschmer (2023). GroMoPo Metadata for Manas/Brahmaputra River arsenic model, HydroShare, http://www.hydroshare.org/resource/ff79c2eb808c48f0b66121c8675bf7bd

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

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

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