GroMoPo Metadata for Tadjourah Aquifer model

Authors:

GroMoPo Daniel Kretschmer

Owners:

gromopo_admin

Type:

Resource

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The size of this resource is 1.6 KB

Created:

Feb 08, 2023 at 3:23 p.m.

Last updated:

Feb 08, 2023 at 3:24 p.m.

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Abstract

The Republic of Djibouti has an area of 23,000 km(2), a coastline 370 km long and a population of 820,000 inhabitants. It experiences an arid climate characterized by high daytime temperatures and low and irregular rainfall (average of 140 mm/year), resulting in continuous periods of drought. These difficult climatic conditions and the absence of perennial surface water have progressively led to an intensive exploitation of groundwater to meet increasing water demands in all sectors (drinking water, agriculture and industries). In coastal areas, seawater intrusion constitutes a significant additional risk of groundwater degradation. This study is focused on the coastal aquifer of Tadjourah which supplies water to the city of Tadjourah, currently comprising 21,000 inhabitants. The main objective of this work is to assess the current resources of this aquifer; its capacity to satisfy, or not, the projected water demands during coming years; and to analyze its vulnerability to seawater intrusion within the frame of climate change. Three RCPs (Representative Concentration Pathway) were used to simulate different climate scenarios up to 2100. The simulated rainfall series allowed to deduce the aquifer recharge up to 2100. The code Seawat was used to model seawater intrusion into the aquifer, using the recharge data deduced from the climate scenarios. The results indicate that the risk of contamination of the Tadjourah coastal aquifer by seawater intrusion is high. The long-term and sustainable exploitation of this aquifer must take into consideration the impact of climate change.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

Djibouti

North Latitude

11.8402°

East Longitude

42.9064°

South Latitude

11.7351°

West Longitude

42.7331°

Streets Terrain Satelite

Spatial Extent

Content

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Additional Metadata

Name	Value
DOI	10.3390/w11112347
Depth
Scale	11 - 101 kmÂ²
Layers	18
Purpose	Salt water intrusion
GroMoPo_ID	308
IsVerified	True
Model Code	SEAWAT
Model Link	https://doi.org/10.3390/w11112347
Model Time
Model Year	2019
Model Authors	Razack, M; Jalludin, M; Houmed-Gaba, A
Model Country	Djibouti
Data Available	Report/paper only
Developer Email	moumtaz.razack@univ-poitiers.fr; mohamed.jalludin@gmail.com; abdogaba@gmail.com
Dominant Geology	Model focuses on multiple geologic materials
Developer Country	France; Djibouti
Publication Title	Simulation of Climate Change Impact on A Coastal Aquifer under Arid Climate. The Tadjourah Aquifer (Republic of Djibouti, Horn of Africa)
Original Developer	No
Additional Information
Integration or Coupling	Solute transport
Evaluation or Calibration	Unsure
Geologic Data Availability	No

How to Cite

GroMoPo, D. Kretschmer (2023). GroMoPo Metadata for Tadjourah Aquifer model, HydroShare, http://www.hydroshare.org/resource/c75f7215ffaa4595b0e63d0700304e20

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

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

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