GroMoPo Metadata for Coastal Karnataka SEAWAT model

Authors:

GroMoPo Daniel Kretschmer

Owners:

gromopo_admin

Type:

Resource

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The size of this resource is 1.5 KB

Created:

Feb 08, 2023 at 8:09 p.m.

Last updated:

Feb 08, 2023 at 8:10 p.m.

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Abstract

The present work investigates the response of shallow, coastal unconfined aquifers to anticipated overdraft conditions and climate change effect using numerical simulation. The groundwater flow model MODFLOW and variable density groundwater model SEAWAT are used for this investigation. The transmissivity and specific yield estimated from the existing database range from 10 to 810 m (2)/day and 0.08% to 10.92% respectively. After successful calibration with Nash-Sutcliffe efficiency greater than 0.80, the values of horizontal hydraulic conductivity and specific yield of the unconfined aquifer were set in the range 1.85-61.90 m/day and 0.006-0.24 respectively. After validating the model, it is applied for forecasting the aquifer's response to anticipated future scenarios of groundwater draft, recharge rate and sea level rise. The findings of the study illustrate that saltwater intrusion is intensified in the area adjoining the tidal rivers, rather than that due to the sea alone. Of all the scenarios simulated, the immense negative impact on groundwater quality emerges due to overdraft conditions and reduced recharge with the areal extent of seawater intrusion exceeding about 67% (TDS > 1 kg/m (3)). The study also arrives at the conclusion that, regional sea level rise of 1 mm/year has no impact on the groundwater dynamics of the aquifer.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

India

North Latitude

13.1273°

East Longitude

74.8537°

South Latitude

13.0215°

West Longitude

74.7539°

Streets Terrain Satelite

Spatial Extent

Content

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Additional Metadata

Name	Value
DOI	10.1007/s12040-016-0719-5
Depth	30
Scale	11 - 101 kmÂ²
Layers	1
Purpose	Salt water intrusion
GroMoPo_ID	400
IsVerified	True
Model Code	MODFLOW;SEAWAT
Model Link	https://doi.org/10.1007/s12040-016-0719-5
Model Time	2011-2014
Model Year	2016
Model Authors	Lathashri, UA; Mahesha, A
Model Country	India
Data Available	Report/paper only
Developer Email	ua.latha@gmail.com
Dominant Geology	Model focuses on multiple geologic materials
Developer Country	India
Publication Title	Groundwater sustainability assessment in coastal aquifers
Original Developer	No
Additional Information
Integration or Coupling	Solute transport
Evaluation or Calibration	Hydrogeologic conditions
Geologic Data Availability	No

How to Cite

GroMoPo, D. Kretschmer (2023). GroMoPo Metadata for Coastal Karnataka SEAWAT model, HydroShare, http://www.hydroshare.org/resource/edf70d2afc5c4770a83cdc0ac675e798

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

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

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