Hypogenic versus epigenic origin of deep underwater caves illustrated by the Hranice Abyss (Czech Republic) - the world’s deepest freshwater cave

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F20%3A00531582" target="_blank" >RIV/67985530:_____/20:00531582 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985891:_____/20:00531582 RIV/00216208:11310/20:10416476

Výsledek na webu

<a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JF005663" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JF005663</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2020JF005663" target="_blank" >10.1029/2020JF005663</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hypogenic versus epigenic origin of deep underwater caves illustrated by the Hranice Abyss (Czech Republic) - the world’s deepest freshwater cave

Popis výsledku v původním jazyce

Extremely deep freshwater filled cave systems are common in karst systems globally. The origin and evolution of such caves are usually attributed to hypogenic (bottom-up) processes, in which acidic groundwater dissolves limestone from below. However, these deep cave systems can form by epigenic (top-down) processes, with meteoric waters descending from the surface underground. The Hranice Abyss (Czech Republic), with a reached depth of 473.5 m, is the deepest mapped extent of such a system globally, although its maximum depth is unknown. Multiple geophysical data sets (gravity, electrical resistivity tomography, audiomagnetotellurics, and seismic refraction and reflection) are used to investigate the extent and formation of the Hranice Abyss. The geophysical results suggest the Hranice Abyss extends to depths of similar to 1 km. Further, we identify structures within the karst, including buried cockpit karst towers with several NW-SE-oriented valleys. The new geophysical results from the Hranice Abyss, considered in combination with geological constraints of the region (tectonic evolution and morphology of karst structure), suggest an epigenic formation process, rather than the traditionally invoked hypogenic origin. Formation by epigenic rather than hypogenic processes has implications for local and regional karst history associated with areas hosting deep karst systems.

Název v anglickém jazyce

Hypogenic versus epigenic origin of deep underwater caves illustrated by the Hranice Abyss (Czech Republic) - the world’s deepest freshwater cave

Popis výsledku anglicky

Extremely deep freshwater filled cave systems are common in karst systems globally. The origin and evolution of such caves are usually attributed to hypogenic (bottom-up) processes, in which acidic groundwater dissolves limestone from below. However, these deep cave systems can form by epigenic (top-down) processes, with meteoric waters descending from the surface underground. The Hranice Abyss (Czech Republic), with a reached depth of 473.5 m, is the deepest mapped extent of such a system globally, although its maximum depth is unknown. Multiple geophysical data sets (gravity, electrical resistivity tomography, audiomagnetotellurics, and seismic refraction and reflection) are used to investigate the extent and formation of the Hranice Abyss. The geophysical results suggest the Hranice Abyss extends to depths of similar to 1 km. Further, we identify structures within the karst, including buried cockpit karst towers with several NW-SE-oriented valleys. The new geophysical results from the Hranice Abyss, considered in combination with geological constraints of the region (tectonic evolution and morphology of karst structure), suggest an epigenic formation process, rather than the traditionally invoked hypogenic origin. Formation by epigenic rather than hypogenic processes has implications for local and regional karst history associated with areas hosting deep karst systems.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

<a href="/cs/project/EF16_013%2F0001800" target="_blank" >EF16_013/0001800: Distribuovaný systém observatorních a terénních měření geofyzikálních polí</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Geophysical Research: Earth Surface

ISSN

2169-9003

e-ISSN

—

Svazek periodika

125

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

e2020JF005663

Kód UT WoS článku

000592163700006

EID výsledku v databázi Scopus

2-s2.0-85091455570