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1D-analytical framework for saltwater intrusion analysis


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Created: Oct 23, 2024 at 10:39 p.m.
Last updated: Nov 04, 2024 at 8:44 p.m. (Metadata update)
Published date: Nov 04, 2024 at 8:44 p.m.
DOI: 10.4211/hs.65ccb3e358834424a2a7204b99bcc642
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Sharing Status: Published
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Abstract

Saltwater intrusion is a critical concern for coastal communities due to its impacts on fresh ecosystems and civil infrastructure. Declining recharge and rising sea level are the two dominant drivers of saltwater intrusion along the land-ocean continuum, but there are currently no global estimates of future saltwater intrusion that synthesize these two spatially variable processes. Here, for the first time, we provide a novel assessment of global saltwater intrusion risk by integrating future recharge and sea level rise while considering the unique geology and topography of coastal regions. We show that nearly 77% of global coastal areas below 60° north will undergo saltwater intrusion by 2100, with different dominant drivers. Climate-driven changes in subsurface water replenishment (recharge) is responsible for the high-magnitude cases of saltwater intrusion, whereas sea level rise and coastline migration are responsible for the global pervasiveness of saltwater intrusion and have a greater effect on low-lying areas.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
58.8137°
East Longitude
176.4844°
South Latitude
-57.7041°
West Longitude
-132.8906°

Temporal

Start Date:
End Date:

Content

README.txt

############################################################################################
#                 1D-analytical framework for saltwater intrusion analysis                 #
#                              NASA Jet Propulsion Laboratory                              #
#                                  Kyra H. Adams 2024                                      #
############################################################################################


This dataset is complementary to the manuscript: 
Adams, K. H.; J.T. Reager; B. Buzzanga; C. David; A. Sawyer; B. Hamlington, 2024, Climate-induced saltwater intrusion in 2100: recharge-driven severity, sea level-driven prevalence, Geophysical Research Letters.

Included are input data, script, and output data.

The input datafiles (input_data1, input_data2, input_data3) have a total of 15 parameters required for global saltwater intrusion analysis. The name of the parameters are in the top row and the values are listed. WatershedID, latitude, and longitude are repeated in each input datafile for ease of organization. The provided values are processed from raw datasets described in the main manuscript and Supporting Information. The input data columns can be read in any programming language and assigned as a parameter matrix with its corresponding name. These matrices are called within the script (e.g., load lat). 

The code to calculate Case C and post-processing is provided as part of the dataset in MATLAB script format (GRL_Adams_2024.mlx). Definition of parameters are within the script. 

Outputs for Case A, B, and C are included in the output data file (output_data).

Related Resources

This resource is described by Adams, K; J.T. Reager; B. Buzzanga; C. David; A. Sawyer; B. Hamlington, 2024, Climate-induced saltwater intrusion in 2100: recharge-driven severity, sea level-driven prevalence, Geophysical Research Letters.

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
U.S. Department of Defense Deployable Satellite-Based Model for Assessing Saltwater Intrusion Impacts Under Future Sea-Level Rise Scenarios

How to Cite

Adams (Kim), K. H. (2024). 1D-analytical framework for saltwater intrusion analysis, HydroShare, https://doi.org/10.4211/hs.65ccb3e358834424a2a7204b99bcc642

This resource is shared under the Creative Commons Attribution-NoCommercial-ShareAlike CC BY-NC-SA.

http://creativecommons.org/licenses/by-nc-sa/4.0/
CC-BY-NC-SA

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