Zeinab Golshadi

The ML 5.8 earthquake that hit the island of Crete on 27 September 2021 is analysed with InSAR (Interferometry from Synthetic Aperture Radar) and GNSS (Global Navigation Satellite System) data. The purpose of this work is to create a model with sufficient detail for the geophysical processes that take place in several kilometres below the earth’s surface and improve our ability to observe active tectonic processes using geodetic and seismic data. InSAR coseismic displacements maps show negative values along the LOS of ~18 cm for the ascending orbit and ~20 cm for the descending one. Similarly, the GNSS data of three permanent stations were used in PPK (Post Processing Kinematic) mode to (i) estimate the coseismic shifts, highlighting the same range of values as the InSAR, (ii) model the deformation of the ground associated with the main shock, and (iii) validate InSAR results by combining GNSS and InSAR data. This allowed us to constrain the geometric characteristics of the seismoge...

On 18 April 2021, a MW 5.8 earthquake occurred near the city of Bandar-e Genaveh, southwestern Iran. Four synthetic aperture radar (SAR) images, acquired from Sentinel-1 (ESA Copernicus project) satellites in ascending and descending orbits, were used to get two displacement maps, catching the surface co-seismic effects through the two-pass InSAR technique. Modeling the deformation patterns using equations for a shear dislocation in elastic half-space allowed the source parameters and the slip distribution of the seismogenic source to be determined. We calculated that the rupture occurred on a reverse fault extending NW-SE, gently dipping NE and with a maximum slip reaching about 1 m. The northeast and low-dip angle of this fault are also consistent with the tectonics of the region, which is subject to deformation and shortening along the northern margin of the Arabian plate. Our estimations of the fault parameters agree with the Zagros Foredeep reverse fault. We additionally proces...

هدیکچ رد خیرات 4 دنفسا 3 138 نیمز هزرل يا یگرزب اب 5 / 6 = W M .دروآرد هزرل هب ار نامرک دنرز و یگژیو کرد نیا ببسم لسگ ياهرتماراپ جارختسا نیمز هزرل ماقرا دیدحت و نییعت و ، هب روظنم مقر هب یبایتسد دامتعا اهرتماراپ نیا زا زیگنارب هلئسم .تسا نیققحم زا يرایسب يددع هداد ياه هراوهام يا هب يرادار کت زا يرادروخرب تهج شادرب کین هبور( توافتم رذگ ود رد ت رداق )نییاپ و لااب دن یتوافتم تاعلاطا زا یکیزیف طیارش و یسدنه دنهد هئارا لسگ کی ؛ ببسم لسگ رتماراپ هنیهب جارختسا ناکما دوخ نیا نیمز هزرل مهارف ار یم دروآ . نیدب روظنم هروتاک شور زا هدافتسا اب دودحم لسگ يا و هیبش يزاس باتش تشاگن ،یعونصم ياهرتماراپ ببسم لسگ رادم ره رد تسد هب دمآ جیاتن و هاگتسیا ره ، رد ره ود و رذگلااب رادم نییاپ رذگ ، هدهاشم ریداقم اب .دیدرگ هسیاقم يا داد ناشن جیاتن فلاتخا نازیم نیرتمک باتش هنیشیب تبث هدش رادم ره رد ، هب جیاتن هب تسد هدمآ زا لدم يزاس اوهام ياهرتماراپ هر رادم ياه نییاپ نازیم هب رذگ % 36 / 5 ، نازیم هب رذگلااب رادم اب هسیاقم رد % 51 / 7 قلعت د تشا یم بیترت نیدب . ناوت ياهرتماراپ هتسد تفگ لسگ هبساحم روکذم هلزلز يارب...