Catatan Kuliah Umum Rapid Earthquake Magnitude Estimation Using Near Realtime GPS Data

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1 8/9/2016 rapid earthquake magnitude estimation gps Catatan Kuliah Umum Rapid Earthquake Magnitude Estimation Using Near Realtime GPS Data oleh Hendy Irawan ( ( )) 9 Agustus 201 Kuliah Umum Rapid Earthquake Magnitude Estimation Using Near Realtime GPS Data Prof. Yusaku Ohta Associate Professor Crustal Physics Laboratory, Research Center for Prediction of Earthquakes and Volcanic Eruptions Tohoku University Acara bertempat di Auditorium BMKG, pada tanggal 9 Agustus 2016, berlangsung dari jam 09:00 WIB sampai dengan jam 13:00 WIB. Live at: ( ID= ) Via Dr. Rahma Hanifa, Dr. Abdul Muhari, Himpunan Mahasiswa Oseanografi ITB, Carmadi Machbub, Ary Setijadi Prihatmanto, Egi Hidayat, Astri Novianty, Irwan Meilano, Irina Rafliana 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=fa 1/15

2 Introduction 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=fa 2/15

3 Relevansi dengan LSKK Hipotesis sementara yang relevan dengan LSKK, adalah bila Semut/ACT banyak penggunanya (terutama terkumpul di satu area), maka data GPS mereka (yang realtime) berpotensi untuk dimasukkan ke algoritma RAPiD ini untuk menghitung magnitude gempa tanpa seismograf, bahkan lebih akurat dari seismograf Namun saya belum jelas saat konfirmasi apakah hal tersebut mungkin dilakukan (deteksi murni berbasis smartphone, tanpa geostation, tanpa seismograf). :( 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=fa 3/15

4 Automatic detection of aftershocks GSI GEONET real time analysis system 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=fa 4/15

5 Single rectangular fault model 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=fa 5/15

6 Slip distribution model 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=fa 6/15

7 Data set for the tests 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=fa 7/15

8 Result 2003 Tokachi oki Earthquake (Mw 8.0) 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=fa 8/15

9 Result: Nankai Earthquake (Simulation: Mw 8.2) 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=fa 9/15

10 Actual working example of REGARD 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=f 10/15

11 Algoritma REGARD dapat memperkirakan single finite fault model dalam waktu 6 menit. Application of tfish to real data 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=f 11/15

12 Effectiveness of combination use of GNSS and offshore tsunami data tfish RAPID 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=f 12/15

13 Effective combination of various methods 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=f 13/15

14 Agar lebih efektif dan akurat, 4 teknik perlu dikombinasikan: 1. Short period seismic wave 2. GNSS 3. OBPG; GPS buoy 4. Offshore wave gauge; Tide gauge 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=f 14/15

15 Conclusions Hendy's Questions Konichiwa, Yusaku Ohta sensei. Hendy to moshimas. Bandung kooka daigaku kara mairimashita. Senko wa Denki kougakudes. 1. What is the difference between tfish, RAPID, and REGARD? 2. What are the sensors support by this technique? Is it possible to use regular GPS/accelerometer/gyro sensors in multiple smartphones? If so, how many sensors/users are needed to have accurate estimation. Douzo yoroshiku onegaishimas. Arigatou gozaimasu. Answer: 1. tfish > only waterfloor not coseismic model RAPID is from seismic wave can generate coseismic model 2. Using GNSS, GLONASS, etc. in geostation 08/rapid earthquake magnitude estimation gps/rapid earthquake magnitude estimation gps.ipynb?download=f 15/15