وبینار مخاطرات لرزه ای جنوب ترکیه و شمال غرب ایران
#وبینار
مخاطرات لرزه ای جنوب ترکیه و شمال غرب ایران
زمان: دوشنبه ۸ اسفند ۱۴۰۱
ساعت: ۱۶ الی ۱۷
آدرس ورود به جلسه:
ALOS-2 PALSAR-2 RGB buildings orientation map in Kahramanmaras, Turkey
ALOS-2 PALSAR-2 satellite images L 2.1 FBD (dual polarized) collected by JAXA are used for RGB maps of the buildings in Kahramanmaras. The results are generated from a descending orbit between 6 April 2022and 8 February 2023. Pale red (pink) pixels indicate either horizontal or vertical buildings with an orientation
angle possibly close to 0, 90, 180, 270, and 360 degrees. Green pixels are diagonal buildings with an orientation angle possibly close to 45, 135, 225, and 315 degrees.
انتخاب دکتر صدرا کریم زاده بعنوان رییس انجمن مخاطره شناسی استان آذربایجان شرقی
طی حکمی از طرف رییس انجمن مخاطره شناسی ایران، آقای دکتر صدرا کریم زاده به مدت سه سال بعنوان رییس انجمن مخاطره شناسی شاخه استان آذربایجان شرقی انتخاب شد
Collaboration between University of Tabriz, Gebze Technical University and Tokyo Institute of Technology for preparing of deformation and damage maps following earthquakes in Turkey, 2023
Under a multilateral collaboration between University of Tabriz, Gebze Technical University and Tokyo Institute of Technology, the deformation map and damage map of the earthquakes in Turkey (Feb. 2023) are produced.
Dr. Sadra Karimzadeh a faculty member of Department of Remote Sensing and GIS in University of Tabriz, guest scientist in Gebze Technical University and president of hazardology association of East-Azerbaijan province, Iran said, “Due to extensive damage of these earthquakes (M 7.8 and M 7.4), the Sentinel Asia project which covers observations over Asia-Pacific countries shared the required remotely sensed data with the members. Dr. Karimzadeh continued: currently 37% of the natural disasters occur in Asia and the economic loss for Asian countries is almost 44% of the whole economic loss in the world. Unfortunately, 89% of the fatalities also belong to Asian countries.” He said, Sentinel Asia activities cover three steps as follows:
1- Pre-disaster, for mitigation and preparedness; 2- Just after disaster, for emergency observation; and 3- post-disaster step for recovery activities.
Dr. Karimzadeh said that the produced maps such as damage maps due to earthquake, fire, and flood are important from the point view of disaster response. The produced deformation maps for the earthquakes in Turkey are validated with seismic data and focal mechanisms of the events which show approximately 4 meters of ground deformations at peak. The produced damage proxy maps also cover a 90000 kilometer square which is promptly delivered to the search and rescue teams in the affected area via Sentinel Asia.
He reminded that the algorithm used for the damage mapping is developed jointly by the researchers in University of Tabriz and Tokyo Institute of Technology, and the results are now available on the website of remote sensing laboratory of university of Tabriz in *.kmz format for public use. He finally pointed out that synthetic aperture radar (SAR) images used in this work are different from optical images and they can be obtained in different weather conditions both in night time and day time.
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Damage proxy map of Kahramanmaras earthquakes (2023.02.06), Turkey
Remote sensing laboratory in University of Tabriz, Iran (www.rslut.ir) in collaboration with Gebze Technical University, Turkey, and Tokyo Institute of Technology, Japan produced the initial damage map of the settlements in Turkey and Syria after M 7.8 and M 7.5 earthquakes. Sentinel-1 satellite images collected by the European Space Agency are used for coherence generation. The results are generated from orbit 14 between 16 Jan. 2023 and 9 Feb. 2023. Red pixels indicate high damage (change) possibility, yellow pixels indicate medium damage possibility and white pixels represent negligible damage.
Damage map in *.kml format can be downloaded from here.
Initial deformation map of Kahramanmaras earthquakes.
Interferogram in *kml format can be downloaded from here.
