Tectonophysics2022，Vol.82218.DOI:10.1016/j.tecto.2021.229141

Coseismic (20 July 2017 Bodrum-Kos) and paleoseismic markers of coastal deformations in the Gulf of Gokova, Aegean Sea, SW Turkey

Yildirim, Cengiz Aksoy, M. Ersen Ozcan, Orkan Isiler, Mehmet Ozbey, Volkan Ciner, Attila Salvatore, Peter Sarikaya, Mehmet Akif Dogan, Turhan Ilkmen, Erhan Schneiderwind, Sascha
Tectonophysics2022，Vol.82218.DOI:10.1016/j.tecto.2021.229141
✕
  • NSTL
  • Elsevier

Coseismic (20 July 2017 Bodrum-Kos) and paleoseismic markers of coastal deformations in the Gulf of Gokova, Aegean Sea, SW Turkey

Yildirim, Cengiz 1Aksoy, M. Ersen 2Ozcan, Orkan 1Isiler, Mehmet 1Ozbey, Volkan 1Ciner, Attila 1Salvatore, Peter 3Sarikaya, Mehmet Akif 1Dogan, Turhan 4Ilkmen, Erhan 4Schneiderwind, Sascha5
扫码查看

作者信息

  • 1. Istanbul Tech Univ
  • 2. Mugla Sitki Kocman Univ
  • 3. Halkali Cad 51-3, Istanbul, Turkey
  • 4. TUBITAK Marmara Res Ctr
  • 5. Rhein Westfal TH Aachen
  • 折叠

Abstract

The Gulf of Gokova is one of the earthquake-prone areas in the Aegean Sea and southwestern Turkey. The paleoseismology of the region is not well known because of the lack of robust field data. In this study, we focused on marine tidal notches as geomorphic markers of modern and paleoseismic deformations. Our geomorphic surveys suggest that the 20 July 2017 Bodrum-Kos Earthquake coseismically uplifted the Karaada Islet at the Turkish coast. We also provide new observations for the entire coastal area of the Gulf of Gokova. The six well preserved uplifted notch levels up to 1.5 m a.s.l. at the east of Oren town are geomorphic markers of offshore earthquakes along the northern shores. Radiocarbon dating C-14 results suggest that the last 0.5 m of this uplift occurred in the last 2314 +/- 32 years. The four well-preserved marine tidal notches up to 1.2 m a.s.l. indicate the earthquake-related uplift along the southern shores. There are also submerged shorelines along the southern shores at 1 m and 3-4 m below sea level as geomorphic markers of relative sea-level change. The evidence of a longer-term deformation is the presence of an uplifted wave-cut marine terrace on the southern shore. We do not have age data, but the inner edge elevation of the terrace is 238 m above modern sea level. In this study, we reveal that the shores of the Gulf of Gokova have been uplifting since the Pleistocene and Holocene, with a high probability of large magnitude offshore earthquakes occurring on normal faults very close to the modern shoreline.

Key words

Marine tidal notch/Coseismic uplift/Paleoseismology/Gulf of Gokova/Aegean Sea/Turkey/HOLOCENE RAISED SHORELINES/LEVEL CHANGE/MEDITERRANEAN REGION/SLIP DISTRIBUTION/ACTIVE TECTONICS/WESTERN TURKEY/TIDAL NOTCHES/EARTHQUAKE/EVOLUTION/FAULT

引用本文复制引用

出版年

2022
Tectonophysics

Tectonophysics

EISCI
ISSN：0040-1951
被引量1
参考文献量76
段落导航相关论文