Full-3D Seismic Tomography for Structure of the Critical Zone

2019 ◽  
pp. 203-231
Author(s):  
Wei Wang ◽  
Po Chen ◽  
En-Jui Lee ◽  
Dawei Mu
Keyword(s):  
Seismic Tomography ◽  
Critical Zone ◽  
3D Seismic

Shallow 2D and 3D Seismic Tomography on an Unstable Mountain Slope

2006 ◽  
Author(s):  
H. Horstmeyer ◽  
B. Heincke ◽  
H. R. Maurer ◽  
A. G. Green ◽  
H. Willenberg ◽  
...  
Keyword(s):  
Seismic Tomography ◽  
3D Seismic ◽  
Mountain Slope ◽  
2D And 3D

scholarly journals Frozen Gaussian approximation for 3D seismic tomography

2018 ◽  
Vol 34 (5) ◽  
pp. 055004 ◽  
Author(s):  
Lihui Chai ◽  
Ping Tong ◽  
Xu Yang
Keyword(s):  
Seismic Tomography ◽  
Gaussian Approximation ◽  
3D Seismic

3D seismic tomography Vp, Vs and Vp/Vs ratio beneath Gede Volcano, West Java, Indonesia

2018 ◽  
Author(s):  
Erisha Aryanti ◽  
Andri Dian Nugraha ◽  
Ahmad Basuki ◽  
Hetty Triastuty
Keyword(s):  
Seismic Tomography ◽  
3D Seismic ◽  
West Java

Structure of the Tasmanian lithosphere from 3D seismic tomography

2010 ◽  
Vol 57 (4) ◽  
pp. 381-394 ◽  
Author(s):  
N. Rawlinson ◽  
H. Tkalčić ◽  
A. M. Reading
Keyword(s):  
Seismic Tomography ◽  
3D Seismic

Lower crustal fluid distribution in the northeastern Japan arc revealed by high-resolution 3D seismic tomography

2004 ◽  
Vol 388 (1-4) ◽  
pp. 33-45 ◽  
Author(s):  
Makoto Matsubara ◽  
Naoshi Hirata ◽  
Hiroshi Sato ◽  
Shin'ichi Sakai
Keyword(s):  
High Resolution ◽  
Seismic Tomography ◽  
Fluid Distribution ◽  
3D Seismic ◽  
Crustal Fluid ◽  
Northeastern Japan ◽  
Lower Crustal

scholarly journals 3D Seismic Waves Velocity Structure of West Sumatera Seismic Waves Using Earthquake Data from January 2010-December 2017

2021 ◽  
Vol 873 (1) ◽  
pp. 012003
Author(s):  
Rizki Wulandari ◽  
Tedi Yudistira ◽  
Erlangga Ibrahim Fattah ◽  
Atin Nur Aulia ◽  
Adhi Wibowo
Keyword(s):  
Fault Zone ◽  
Seismic Tomography ◽  
Seismic Waves ◽  
Velocity Structure ◽  
Secondary Data ◽  
Velocity Model ◽  
P Wave ◽  
3D Seismic ◽  
Time Data ◽  
West Sumatra

Abstract This study analyses the P wave velocity (Vp) and Vp/Vs based on 3D seismic tomography in West Sumatra. Seismic tomography is a method of reconstructing the image of the subsurface structure of the earth using travel time data. This research uses secondary data obtained from the Incorporated Research Institutions for Seismology (IRIS) from January 2010 to December 2017. The data obtained were 472 earthquake events and 21 seismic stations that recorded the earthquake events. This research consists of are the hypocenter relocation, which will simultaneously renew the 1D velocity model using VELEST software, and tomographic inversion using SIMULPS12 software. The minimum anomaly of Vp/Vs value is around 1.39, while the maximum anomaly Vp/Vs value is around 2.05. The Vp distribution results have low and high Vp/Vs values around Sumatra Fault Zone and Mentawai Fault Zone. Anomaly results from the tomogram of these areas have an association with saturated pressure sedimentary areas and the presence of fractures which will further contribute to earthquake events.

scholarly journals PENCITRAAN TOMOGRAFI SEISMIK 3-D UNTUK STRUKTUR INTERNAL DI BAWAH GUNUNGAPI MERAPI MENGGUNAKAN SOFTWARE LOTOS-10

2018 ◽  
Vol 3 (2) ◽  
pp. 105-116 ◽  
Author(s):  
Ayu Wita Sari ◽  
Gede Bayu Suparta
Keyword(s):  
Seismic Tomography ◽  
Disaster Mitigation ◽  
Secondary Wave ◽  
Physical Parameters ◽  
Volcanic Earthquake ◽  
3D Seismic ◽  
Merapi Volcano ◽  
Local Tomography ◽  
Imaging Research ◽  
Tomography Method

Abstrak Telah dilakukan penelitian pencitraan tomografi seismik 3D untuk stuktur internal di bawah Gunung Merapi dengan empat stasiun pencatat gempa dan gempa vulkanik sebagai sumber sinar gelombang. Penelitian ini menggunakan perangkat LOTOS-10 (Local Tomography Software 10) untuk inversi tomografi seismik 3D. Karakteristik medium bawah Gunung Merapi dapat digambarkan oleh parameter fisis seperti kecepatan gelombang primer dan sekunder. Hasil pengolahan data seismograf menunjukkan metoda tomografi seismik dapat mengungkap struktur bawah permukaan Gunung Merapi melalui distribusi anomali deviasi kecepatan dan Vp/Vs ratio. Kualitas citra yang dihasilkan dengan menggunakan gelombang primer lebih jelas resolusinya dan waktu yang digunakan lebih efesien, sehingga dapat digunakan sebagai informasi mitigasi bencana sebelum gempa erupsi terjadi. Daerah anomali negatif yang diperoleh terletak di bawah puncak Gunung Merapi pada kedalaman 3 - 5 km mempunyai karakter fisis yaitu zona lemah, kurang kompak, panas dan heterogen. Daerah anomali tersebut dapat diinterpretasikan sebagai keberadaan zona materi panas yang berasosiasi dengan sisa dapur magma dangkal. Kata-kata kunci: Gunung api Merapi, sifat fisis, tomografi seismic, lotos-10. Abstract 3D seismic tomography imaging research conducted for internal structures under Merapi Volcano with four earthquake recording and volcanic earthquake stations as a source of wave rays. This study used LOTOS-10 (Local Tomography Software 10) for 3D seismic tomography inversion. Characteristics of the medium under Merapi Volcano described by physical parameters such as primary and secondary wave velocities. The result of seismograph data processing shows seismic tomography method can reveal the subsurface structure of the Merapi Volcano through the distribution of deviation anomaly speed and Vp / Vs ratio. Image quality generated by using primary wave more clearly the resolution and time used more efficient, so that can be used as disaster mitigation information before earthquake eruption happened. The negative anomaly area obtained under the peak of Merapi Volcano at a depth of 3 - 5 km has the physical characteristics of weak, less compact, hot and heterogeneous zones. The anomalous region can interpret as the existence of a zone of heat material associated with the rest of the shallow magma kitchen. Keywords: Mount of Merapi, physical character, Seismic of Tomography, lotos-10.

Imaging permafrost velocity structure using high resolution 3D seismic tomography

2008 ◽  
Author(s):  
K. Ramachandran ◽  
Tom Brent ◽  
Gilles Bellefleur ◽  
Scott Dallimore ◽  
Michael Riedel
Keyword(s):  
High Resolution ◽  
Seismic Tomography ◽  
Velocity Structure ◽  
3D Seismic
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