Surface deformation and Salt budget of an active salt fountain, Finu in the Zagros mountains, Iran, using persistent scatterer interferometry
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F25%3A00639919" target="_blank" >RIV/67985530:_____/25:00639919 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/25:10510330
Result on the web
<a href="https://pubs.geoscienceworld.org/gsw/lithosphere/article/2025/3/lithosphere_2024_216/660581/Surface-Deformation-and-Salt-Budget-of-an-Active" target="_blank" >https://pubs.geoscienceworld.org/gsw/lithosphere/article/2025/3/lithosphere_2024_216/660581/Surface-Deformation-and-Salt-Budget-of-an-Active</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2113/2025/lithosphere_2024_216" target="_blank" >10.2113/2025/lithosphere_2024_216</a>
Alternative languages
Result language
angličtina
Original language name
Surface deformation and Salt budget of an active salt fountain, Finu in the Zagros mountains, Iran, using persistent scatterer interferometry
Original language description
In subaerial salt diapirs, salt buoyancy drives the vertical flow of salt in the feeder, salt extrusion, and gravity spreading on the surface. The shape of these diapirs is controlled by the balance between buoyancy forces, gravity spreading on the surface, and surface dissolution of the salt. While salt dissolution is a surface process that can be directly observed, the rate of salt supply from depth is more difficult to constrain. In this study, we mapped the surface deformation of the Finu salt fountain in the Zagros Mountains of Iran using Persistent Scatterer Interferometry (PSI) of Sentinel-1 SAR data from 2014 to 2018 and calculated the volume change over this period. The observed deformation signal indicates uplift at the central dome and outward spreading at the flanks. Our PSI time series shows no correlation between these surface motions and variations in temperature and precipitation, indicating that the deformation is primarily driven by internal salt dynamics. The extracted 2D velocity vectors along an east-west (E-W) trending swath profile across the diapir vary in magnitude with distance from the diapir center and with local slope, reflecting both salt supply from the subsurface and its gravity spreading. The 2D displacements reveal a change in cross-sectional area along this profile of +9.80 +/- 0.97 m(2)/y. Integrating this value over the diapir's extent yields a total volume change of +38.3 +/- 3.8 x 10(3) m(3)/y. Using plausible estimates for salt dissolution rates, we estimated a total salt flux of 146.2 +/- 3.8 x 10(3) m(3)/y, corresponding to extrusion from a 1.7 km diameter feeder at an average rate of 64 +/- 2 mm/y. This study quantifies the salt supply in an axisymmetric salt fountain based on surface deformation data. Our findings improve the understanding of salt-spreading mechanisms and contribute to more accurate assessments of salt budgets in diapiric systems.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GC20-18647J" target="_blank" >GC20-18647J: Influence of caprock on the growth dynamics of salt diapirs in Iran</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Lithosphere
ISSN
1941-8264
e-ISSN
1947-4253
Volume of the periodical
2025
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
216
UT code for WoS article
001583616400001
EID of the result in the Scopus database
2-s2.0-105030080072