Pregled bibliografske jedinice broj: 1246234
Submerged karst landscape of the Prokljan Lake (Krka River estuary in the central Dalmatia)
Submerged karst landscape of the Prokljan Lake (Krka River estuary in the central Dalmatia) // Book of Abstracts
Coimbra, Portugal, 2022. str. 1-1 (predavanje, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 1246234 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Submerged karst landscape of the Prokljan Lake (Krka
River estuary in the central Dalmatia)
Autori
Šenolt, Natalia ; Hasan, Ozren ; Miko, Slobodan ; Brunović, Dea ; Ilijanić, Nikolina
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Book of Abstracts
/ - , 2022, 1-1
Skup
10th IAG International conference on Geomorphology
Mjesto i datum
Coimbra, Portugal, 12.09.2022. - 16.09.2022
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
istočna jadranska obala ; potopljeni paleookoliš ; geomorfologija ; krški estuarij ; holocen
(eastern Adriatic coast ; submerged paleolandscape ; geomorphology ; karstic estuary ; Holocene)
Sažetak
During the Last Glacial Maximum, a large part of the eastern Adriatic shelf was exposed, resulting in a distinctive landscape. With postglacial sea level rise, many coastal landforms were drowned and filled with Quaternary sediments. Here, we describe the geomorphological features and sedimentary processes shaping the submerged landscape of the Prokljan Lake, a part of the karst Krka River Estuary (KRE). KRE is a 24 km long microtidal salt-wedge estuary located in central Dalmatia. The estuary extends to the last active tufa waterfalls, Skradinski buk, which is a part of the National park Krka. High resolution multibeam bathymetry, sub-bottom profiling and side-scan sonar were used to determine the evolution of the seafloor morphology of the estuary shaped by postglacial sea level variability. The dataset covered approx. 6 km2 of a shallow seabed area with depths of up to 25 m. The observed paleolandscape is unique and well preserved, consisting of the former terrestrial landforms. The most prominent feature is a 3.5 km long complex tufa barrier system, with adjoining basins, at depths ranging from 5 to 20 m bsl. Other distinct features are numerous carbonate mounds and incised river valley. These features are covered or partially filled with fluvial/lacustrine and estuarine sediments. In addition, 36 grab samples and video observations provided ground truth for sediment determination and classification of the estuarine bottom, while 5 piston sediment cores enabled correlation with seismic data. Based on analyzed landform morphology and sediment stratigraphy, the flooding of the river canyon due to sea level rise in the Prokljan Lake started at approx. 10000–9500 y BP and the formation of the estuary at approx. 7500 y BP. The results of ongoing study provide a better understanding of past environments in this submerged system related to the postglacial sea level rise. This study was supported by the Croatian Science Foundation Project “Sediments between source and sink during a late Quaternary eustatic cycle: the Krka River and the Mid Adriatic Deep System” (QMAD) (HRZZ IP-04-2019-8505).
Izvorni jezik
Engleski
Znanstvena područja
Geologija
POVEZANOST RADA
Projekti:
HRZZ-IP-2019-04-8505 - Porijeklo i taloženje sedimenata u vrijeme kasno kvartarnih promjena morske razine: Sustav rijeke Krke i Srednjojadranske kotline (QMAD) (Miko, Slobodan, HRZZ - 2019-04) ( CroRIS)
Ustanove:
Hrvatski geološki institut
Profili:
Ozren Hasan
(autor)
Natalia Smrkulj
(autor)
Nikolina Ilijanić
(autor)
Dea Brunović
(autor)
Slobodan Miko
(autor)