Geodetic and seismological analysis of the 2017 Kos-Bodrum Mw 6.5 earthquake (SE Aegean Sea) provides evidence for the evolution of normal faulting in Gökova graben

Vasso Saltogianni, Tuncay Taymaz, Seda Yolsal-Çevikbilen , Tuna Eken, Michael Gianniou, Taylan Öcalan, Stella Pytharouli, Stathis Stiros

Research output: Contribution to conferenceAbstract

Abstract

The epicentral area of the 2017, Mw 6.5 destructive Kos-Bodrum normal faulting earthquake, associated with a small tsunami in a touristic region, is located within the active Gökova graben and represents a case of a previously unrecognized, shallow normal fault without clear geomorphological signature. Analysis of teleseismic body-waveform data and geodetic data, both in the near- and far- field, indicate a well-constrained 25km long and 10km deep south-dipping normal fault which produced small uplift in the Bodrum peninsula. Modeled fault marks the NW edge of the actively extending part of the Gökova graben and was associated with two clusters of aftershocks, while only its eastern part correlates with known active faults. The 2017 earthquake seems to reflect an immature normal fault between Kos Island and the Anatolia mainland, and expansion of the Gökova graben, perhaps through echelon fractures, as is observed in seismic profiles farther east. Activation of normal faults with modest, if any geomorphic signature, hence not easily recognized before the earthquakes seems not unusual in the Aegean area, and represents a major issue for earthquake hazard analysis.
LanguageEnglish
Number of pages1
Publication statusPublished - 8 Apr 2018
EventEGU General Assembly 2018 - Vienna, Austria
Duration: 8 Apr 201813 Apr 2018
https://www.egu2018.eu/

Conference

ConferenceEGU General Assembly 2018
CountryAustria
CityVienna
Period8/04/1813/04/18
Internet address

Fingerprint

Faulting
Earthquakes
Tsunamis
Hazards
Chemical activation

Keywords

  • earthquake
  • Kos-Bodrum
  • fault

Cite this

Saltogianni, V., Taymaz, T., Yolsal-Çevikbilen , S., Eken, T., Gianniou, M., Öcalan, T., ... Stiros, S. (2018). Geodetic and seismological analysis of the 2017 Kos-Bodrum Mw 6.5 earthquake (SE Aegean Sea) provides evidence for the evolution of normal faulting in Gökova graben. Abstract from EGU General Assembly 2018, Vienna, Austria.
Saltogianni, Vasso ; Taymaz, Tuncay ; Yolsal-Çevikbilen , Seda ; Eken, Tuna ; Gianniou, Michael ; Öcalan, Taylan ; Pytharouli, Stella ; Stiros, Stathis. / Geodetic and seismological analysis of the 2017 Kos-Bodrum Mw 6.5 earthquake (SE Aegean Sea) provides evidence for the evolution of normal faulting in Gökova graben. Abstract from EGU General Assembly 2018, Vienna, Austria.1 p.
@conference{e14a60dabcc640f9a9492da0335a454e,
title = "Geodetic and seismological analysis of the 2017 Kos-Bodrum Mw 6.5 earthquake (SE Aegean Sea) provides evidence for the evolution of normal faulting in G{\"o}kova graben",
abstract = "The epicentral area of the 2017, Mw 6.5 destructive Kos-Bodrum normal faulting earthquake, associated with a small tsunami in a touristic region, is located within the active G{\"o}kova graben and represents a case of a previously unrecognized, shallow normal fault without clear geomorphological signature. Analysis of teleseismic body-waveform data and geodetic data, both in the near- and far- field, indicate a well-constrained 25km long and 10km deep south-dipping normal fault which produced small uplift in the Bodrum peninsula. Modeled fault marks the NW edge of the actively extending part of the G{\"o}kova graben and was associated with two clusters of aftershocks, while only its eastern part correlates with known active faults. The 2017 earthquake seems to reflect an immature normal fault between Kos Island and the Anatolia mainland, and expansion of the G{\"o}kova graben, perhaps through echelon fractures, as is observed in seismic profiles farther east. Activation of normal faults with modest, if any geomorphic signature, hence not easily recognized before the earthquakes seems not unusual in the Aegean area, and represents a major issue for earthquake hazard analysis.",
keywords = "earthquake, Kos-Bodrum, fault",
author = "Vasso Saltogianni and Tuncay Taymaz and Seda Yolsal-{\cC}evikbilen and Tuna Eken and Michael Gianniou and Taylan {\"O}calan and Stella Pytharouli and Stathis Stiros",
year = "2018",
month = "4",
day = "8",
language = "English",
note = "EGU General Assembly 2018 ; Conference date: 08-04-2018 Through 13-04-2018",
url = "https://www.egu2018.eu/",

}

Saltogianni, V, Taymaz, T, Yolsal-Çevikbilen , S, Eken, T, Gianniou, M, Öcalan, T, Pytharouli, S & Stiros, S 2018, 'Geodetic and seismological analysis of the 2017 Kos-Bodrum Mw 6.5 earthquake (SE Aegean Sea) provides evidence for the evolution of normal faulting in Gökova graben' EGU General Assembly 2018, Vienna, Austria, 8/04/18 - 13/04/18, .

Geodetic and seismological analysis of the 2017 Kos-Bodrum Mw 6.5 earthquake (SE Aegean Sea) provides evidence for the evolution of normal faulting in Gökova graben. / Saltogianni, Vasso; Taymaz, Tuncay; Yolsal-Çevikbilen , Seda; Eken, Tuna; Gianniou, Michael; Öcalan, Taylan; Pytharouli, Stella; Stiros, Stathis.

2018. Abstract from EGU General Assembly 2018, Vienna, Austria.

Research output: Contribution to conferenceAbstract

TY - CONF

T1 - Geodetic and seismological analysis of the 2017 Kos-Bodrum Mw 6.5 earthquake (SE Aegean Sea) provides evidence for the evolution of normal faulting in Gökova graben

AU - Saltogianni, Vasso

AU - Taymaz, Tuncay

AU - Yolsal-Çevikbilen , Seda

AU - Eken, Tuna

AU - Gianniou, Michael

AU - Öcalan, Taylan

AU - Pytharouli, Stella

AU - Stiros, Stathis

PY - 2018/4/8

Y1 - 2018/4/8

N2 - The epicentral area of the 2017, Mw 6.5 destructive Kos-Bodrum normal faulting earthquake, associated with a small tsunami in a touristic region, is located within the active Gökova graben and represents a case of a previously unrecognized, shallow normal fault without clear geomorphological signature. Analysis of teleseismic body-waveform data and geodetic data, both in the near- and far- field, indicate a well-constrained 25km long and 10km deep south-dipping normal fault which produced small uplift in the Bodrum peninsula. Modeled fault marks the NW edge of the actively extending part of the Gökova graben and was associated with two clusters of aftershocks, while only its eastern part correlates with known active faults. The 2017 earthquake seems to reflect an immature normal fault between Kos Island and the Anatolia mainland, and expansion of the Gökova graben, perhaps through echelon fractures, as is observed in seismic profiles farther east. Activation of normal faults with modest, if any geomorphic signature, hence not easily recognized before the earthquakes seems not unusual in the Aegean area, and represents a major issue for earthquake hazard analysis.

AB - The epicentral area of the 2017, Mw 6.5 destructive Kos-Bodrum normal faulting earthquake, associated with a small tsunami in a touristic region, is located within the active Gökova graben and represents a case of a previously unrecognized, shallow normal fault without clear geomorphological signature. Analysis of teleseismic body-waveform data and geodetic data, both in the near- and far- field, indicate a well-constrained 25km long and 10km deep south-dipping normal fault which produced small uplift in the Bodrum peninsula. Modeled fault marks the NW edge of the actively extending part of the Gökova graben and was associated with two clusters of aftershocks, while only its eastern part correlates with known active faults. The 2017 earthquake seems to reflect an immature normal fault between Kos Island and the Anatolia mainland, and expansion of the Gökova graben, perhaps through echelon fractures, as is observed in seismic profiles farther east. Activation of normal faults with modest, if any geomorphic signature, hence not easily recognized before the earthquakes seems not unusual in the Aegean area, and represents a major issue for earthquake hazard analysis.

KW - earthquake

KW - Kos-Bodrum

KW - fault

UR - https://www.egu2018.eu/

M3 - Abstract

ER -

Saltogianni V, Taymaz T, Yolsal-Çevikbilen S, Eken T, Gianniou M, Öcalan T et al. Geodetic and seismological analysis of the 2017 Kos-Bodrum Mw 6.5 earthquake (SE Aegean Sea) provides evidence for the evolution of normal faulting in Gökova graben. 2018. Abstract from EGU General Assembly 2018, Vienna, Austria.