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GEOSCIENCE 2020 BOOK OF ABSTRACTS Editors: Florina CHITEA Dumitru IOANE Irina STANCIU București, 2020 FOREWORD GEOSCIENCE is a yearly symposium held in Bucharest, Romania and organized by the Romanian Society of Applied Geophysics (SGAR). Over the years, the symposium has continued to grow and expand its area of interest, tackling topics ranging from Earth Physics (Geodynamics, Seismology and Geomagnetism), Near Surface Geophysics, Geoscience for Energy, Geoscience for Cave and Karst Areas, Geology or Environmental Studies & Geohazards, to Geoscience For Society, Education And Environment. This year, the GEOSCIENCE International Symposium had to be held exclusively online, over the course of three days (20-22 November 2020). The event offered a wide range of topics and welcomed contributions in various research areas, with the clear intention of providing the geoscientific community and industry with the opportunity to share scientific knowledge and expertise, as well as to discuss the newest trends in the field of applied or theoretical geoscience. The Romanian Society of Applied Geophysics (SGAR) is proud to have hosted researchers, professors and engineers from the extended field of Earth Sciences. We would also like to acknowledge the strong international presence at this year’s edition of the event, with presenters from countries such as the U.S.A., Switzerland, Greece, France, Serbia, Russia, UK, Turkey, India or China joining the Romanian participants. GEOSCIENCE 2020 International Symposium was organized in collaboration with the National Institute for Research and Development for Earth Physics, the “Sabba Ştefănescu” Institute of Geodynamics of the Romanian Academy, as well as with the Faculty of Geology and Geophysics, University of Bucharest, Romania. A selection of the works presented during the symposium will also appear as extended papers within a forthcoming book under the aegis of the Romanian Academy Publishing House. Editors of the volume, Florina Tuluca President of the Organizing Committee Geoscience 2020 President of the SGAR Dumitru Ioane Vice-President of the SGAR Irina Stanciu Chair of the Local Organizing Committee Geoscience 2020 Treasurer of the SGAR 1 CONTENTS: SESSION 1 - EARTH PHYSICS: GEODYNAMICS, SEISMOLOGY AND GEOMAGNETISM CRUSTAL STRESS FIELD IN THE ACTIVE SEISMIC ZONES IN AND AROUND VRANCEA AREA, ROMANIA ……………………………………………………………………………………………………... 13 Andrei Bălă1*, Mircea Radulian1, Dragoș Toma-Dănilă1 1 National Institute for Research and Development for Earth Physics, Romania ACTIVE TECTONICS, TRANSCURRENT FAULTS AND HIGH MAGNITUDE SEISMICITY ZONES IN VRANCEA (ROMANIA) AND DURRES (ALBANIA) …………………………………………………. 14 Dumitru Ioane1,3*, Irina Stanciu1,2,3 1 University of Bucharest, Faculty of Geology and Geophysics, 2 National Institute for Research and Development on Marine Geology and Geo-ecology – GeoEcoMar, 3 Romanian Society of Applied Geophysics INTRAMOESIAN FAULT IN SPACE AND TIME ………………………………………………………... 15 Irina Stanciu1,2,3*, Dumitru Ioane1,3 1 University of Bucharest, Faculty of Geology and Geophysics, 2 National Institute for Research and Development on Marine Geology and Geo-ecology – GeoEcoMar, 3 Romanian Society of Applied Geophysics ROMANIA CONTINUES THE PARTNERSHIP IN THE NEW STAGE OF EPOS-ERIC PROJECT (SUSTAINABILITY PHASE) ………………………………………………………………………………… 16 Constantin Ionescu1*, Andreea Craiu1, Mihaela Drăgan1, Alexandru Mărmureanu1, Alexandra Muntean1, Eduard Năstase1 1 National Institute for Research and Development for Earth Physics, Romania SEISMICITY AND TSUNAMOGENETIC POTENTIAL OF THE BLACK SEA AND SURROUNDING AREAS …………………………………………………………………………………………………………. 17 Mihail Diaconescu1,3*, Andreea Craiu1, Dragoș Toma-Dănilă1, Eduard Gabriel Constantinescu1,2 1 National Institute for Research and Development for Earth Physics, Romania, 2 Prospecţiuni S.A., Romania, 3 Romanian Society of Applied Geophysics EVALUATION OF UP-TO-DATE GROUND MOTION MODELS FOR INSLAB SEISMIC EVENTS IN ROMANIA ……………………………………………………………………………………………………... 18 Carmen Ortanza Cioflan1*, Elena Florinela Manea1,2, Laurenţiu Danciu2, Alina Coman1,4, Alexandru Mărmureanu1 1 National Institute for Research and Development for Earth Physics, Romania, 2 San Diego State University, Department of Geological Sciences, California, USA, 3 ETH Zurich, Seismology and Geodynamics, Switzerland, 4 Faculty of Physics, University of Bucharest, Romania GEOPHYSICAL BEDROCK DEPTH COMPUTATION FOR THE EXTRA - CARPATHIAN AREA OF ROMANIA ……………………………………………………………………………………………………... 19 Alina Coman1,2*, Elena Florinela Manea1,3, Carmen Ortanza Cioflan1 1 National Institute for Research and Development for Earth Physics, Romania, 2 Faculty of Physics, University of Bucharest, Romania, 3 San Diego State University, Department of Geological Sciences, California, USA EARTHQUAKE CATALOG DECLUSTERING OF DANUBIAN SEISMOGENIC CRUSTAL AREA 20 Cristian Ghita1*, Mihail Diaconescu1,3, Iren-Adelina Moldovan1, Razvan Doru Raicu2 1 National Institute for Research and Development for Earth Physics, Romania, 2 “Ferdinand I” Military Technical Academy, Bucharest, Romania, 3 Romanian Society of Applied Geophysics 2 VERTICAL DEFORMATIONS AND SEASONALITY ON GNSS STATIONS IN ROMANIA AND BALKAN REGION USING PPP SOLUTIONS …………………………………………………………….. 21 Nastase Ilie Eduard1*, Muntean Alexandra1, Nistor Sorin2 1 National Institute for Research and Development for Earth Physics, Romania, 2 University of Oradea, Romania EVALUATION OF THE PREDOMINANT FREQUENCY OF RESONANCE FOR 2014 5.4 MW VRANCEA CRUSTAL EVENT ……………………………………………………………………………… 22 Alina Coman1,2*, Andreea Predoiu1, Elena Florinela Manea1,3, Carmen Ortanza Cioflan1 1 National Institute for Research and Development for Earth Physics, Romania, 2 Faculty of Physics, University of Bucharest, Romania, 3 San Diego State University, Department of Geological Sciences, California, USA A SLOW-SLIP-EVENT IN THE VRANCEA SEISMOLOGICALY ACTIVE REGION OF ROMANIA …………………………………………………………………………………………………………………… 23 Andrei Apostol1, Cristian Ghita2*, Alexandra Muntean2, Iren-Adelina Moldovan2 1 Center of Bioseismology, Covasna, Romania, 2 National Institute for Research and Development for Earth Physics, Romania ANALYSIS AND INTERPRETATION OF SEISMIC LOW MAGNITUDE DATA IN NORTHERN ALGERIA ……………………………………………………………………………………………………… 24 Sehili Mebarka1*, Ioane Dumitru1,2 1 University of Bucharest, Faculty of Geology and Geophysics, Romania, 2 Romanian Society of Applied Geophysics IMPACT OF BACK - ARC ATTENUATION ON SEISMIC WAVEFIELD …………………………….. 25 Alina Coman1,2*, Elena Florinela Manea1,3, Carmen Ortanza Cioflan1, Mircea Radulian1,4 1 National Institute for Research and Development for Earth Physics, Romania, 2 Faculty of Physics, University of Bucharest, Romania, 3 San Diego State University, Department of Geological Sciences, California, USA, 4 Academy of Romanian Scientists, Bucharest, Romania EARTHQUAKE MECHANISMS AND STRESS FIELD FOR VRANCEA INTERMEDIATE-DEPTH ZONE …………………………………………………………………………………………………………… 26 Andreea Craiu1*, Mihai Diaconescu1,2, Marius Mihai1, Marius Craiu1, Alexandru Marmureanu1 1 National Institute for Research and Development for Earth Physics, Romania, 2 Romanian Society of Applied Geophysics LATERAL VARIATIONS OF THE ATTENUATION OF SEISMIC WAVES IN THE AREA FROM THE BEND OF THE SOUTHEASTERN CARPATHIANS ……………………………………………….. 27 Luminita Angela Ardeleanu 1, Anica Otilia Placinta 1*, Alina Coman 1 1 National Institute for Research and Development for Earth Physics, Romania REAL TIME ANALYSIS FOR VRANCEA INTERMEDIATE-DEPTH EVENTS USING STRONG MOTION DATA ………………………………………………………………………………………………. 28 Marius Craiu1*, Andreea Craiu1, Marius Mihai1, Alexandru Marmureanu1 1 National Institute for Research and Development for Earth Physics, Romania NEAR REAL TIME FOCAL MECHANISM DETERMINATION FOR VRANCEA CRUSTAL DEPTH EARTHQUAKES 2010-2020 …………………………………………………………………………………. 29 Marius Mihai1*, Andreea Craiu1, Mihail Diaconescu1,2, Marius Craiu1, Alexandru Marmureanu1 1 National Institute for Research and Development for Earth Physics, Romania, 2 Romanian Society of Applied Geophysics REVISION OF MACROSEISMIC EFFECTS OF THE AUGUST 30, 1986 VRANCEA SUBCRUSTAL EARTHQUAKE ……………………………………………………………………………………………….. 30 Angela Petruta Constantin1*, Iren-Adelina Moldovan1 1 National Institute for Research and Development for Earth Physics, Romania 3 THE PAST, PRESENT AND FUTURE OF SHAKEMAP IN ROMANIA ………………………………... 31 Bogdan Grecu1*, Anton Danet1, Constantin Ionescu1, Iren-Adelina Moldovan1, Angela Constantin1, Ovidiu Jianu1 1 National Institute for Research and Development for Earth Physics, Romania CRUSTAL FIELD DEFORMATION CHARACTERISTICS IN VRANCEA SEISMIC AREA FROM GPS DATA ……………………………………………………………………………………………………... 32 Doru Mateciuc1, Andrei Bălă1 1 National Institute for Research and Development for Earth Physics, Romania DEVELOPMENT OF THE FIRST MACROSEISMIC INTENSITY DATASET FOR CRUSTAL ACTIVITY IN ROMANIA …………………………………………………………………………………… 33 Valentina Visan1*, Carmen Ortanza Cioflan1, Elena Florinela Manea1,2, Iren-Adelina Moldovan1, Dragos Toma- Danila1 1 National Institute for Research and Development for Earth Physics, Romania, 2 San Diego State University, Department of Geological Sciences, California, USA APPLICATION OF EARTHQUAKE EARLY WARNING SYSTEM FOR GAS DISTRIBUTION PROTECTION ………………………………………………………………………………………………… 34 Victorin-Emilian Toader1*, Constantin Ionescu1, Alexandru Marmureanu1, Andrei Mihai1, Iosif Lingvay2, Ovidiu Ciogescu2 1 National Institute for Research and Development for Earth Physics, Romania,