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- Title
Heterogeneity‐Induced Mixing and Reaction Hot Spots Facilitate Karst Propagation in Coastal Aquifers.
- Authors
De Vriendt, K.; Pool, M.; Dentz, M.
- Abstract
The freshwater‐seawater mixing zone is a critical region for chemical activity. Yet little is known about the influence of ever present spatial heterogeneity on the dynamics of mixing and calcite dissolution, which play a key role in the understanding of karst development. We analyze the impact of different heterogeneity structures and strengths on the local and global response of mixing and dissolution rates across the saltwater freshwater mixing zone. We find that the initial heterogeneity structure significantly impacts observed dissolution and mixing patterns, which sheds some new light on karst propagation in coastal aquifers. Key Points: Heterogeneity results in localized reactive hot spots across the entire mixing zoneThe presence of heterogeneity may provide an explanation for complex dissolution features observed in coastal karstic systems
- Subjects
KARST; GEOLOGIC hot spots; MIXING; LIGHT propagation; AQUIFERS; IMPACT craters; SALTWATER encroachment
- Publication
Geophysical Research Letters, 2020, Vol 47, Issue 10, p1
- ISSN
0094-8276
- Publication type
Article
- DOI
10.1029/2020GL087529