Coastal Effects of the Kahramanras Turkey-Syria Twin Earthquakes of February 6th, 2023: Recommendations for Using Geospatial Analysis Tools to Predict Abnormal Water Impact
On February 6th, 2023 (at 01:17:36.1 UTC) a strong M7.8 earthquake with epicentral location 37.17 N and 37.08 E happened approximately 30 km WNW of Gaziantep city, in Southeastern Turkey (CSEM/EMSC), and about twice the distance from the border with Syria. This earthquake was followed by a similar magnitude earthquake (M7.5) approximately nine hours later on the same day (at 10:24:49 UTC) with epicentral location 38.11 N 37.24 E near Elbistan, Turkey, about 100km north of the first event. Several aftershocks have ensued with the largest being a M6.3. Both earthquakes caused extensive damage and fatalities (>> 45,000 in Turkey and Syria) through ground shaking and secondary effects. The M7+ earthquakes were widely felt in Turkey and surrounding areas. Felt reports from both events were submitted to EMSC for this event in Greece, the Balkans and Italy in distances exceeding 1200 km. Flooding was also reported in few locations such as in Alexandretta (Iskenderun) and in Salqin, Idlib, Syria. Sea Level stations recorded a small tsunami and tsunami runup was observed in at least 5 locations in Cyprus and Turkey along with seiching in Gaziantep.
Seismic seiching is used often to describe the surface oscillations generated in enclosed or semi-enclosed water basins due to earthquake ground motions. Such oscillations have previously been associated with distant, regional and local earthquakes while it has been suggested through seismic and spatial analysis that they are associated with the presence of thick (>1 km thick) unconsolidated sediments (Barberopoulou et al. 2004, 2006 & 2008; McGarr, 1968). Only a handful of earthquakes have relatively good data to understand the occurrence of standing waves due to seismic motions. In this work, we outline a geospatial model with the major input parameters we believe are attributing to the presence of standing waves associated with an earthquake. We aim for using GIS tools to help in predicting the locations of unusual wave activity which may also be associated with the potential of soil liquefaction occurrence.
Session: February 2023 Mw 7.8 Earthquake Sequence in Turkey [Poster]
Type: Poster
Room: Ballroom
Date: 4/19/2023
Presentation Time: 08:00 AM (local time)
Presenting Author: Aggeliki Barberopoulou
Student Presenter: No
Additional Authors
Aggeliki Barberopoulou Presenting Author Corresponding Author aggeliki.barberopoulou@tufts.edu Tufts University |
Christina Sanon christina.sanon@tufts.edu Tufts University |
Adel Asadi adel.asadi@tufts.edu Tufts University |
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Coastal Effects of the Kahramanras Turkey-Syria Twin Earthquakes of February 6th, 2023: Recommendations for Using Geospatial Analysis Tools to Predict Abnormal Water Impact
Category
February 2023 Mw 7.8 Earthquake Sequence in Turkey
Description