2024-03-28T13:19:17Z
https://repository.dl.itc.u-tokyo.ac.jp/oai
oai:repository.dl.itc.u-tokyo.ac.jp:00032490
2022-12-19T05:37:57Z
80:4535:4587:4595
9:504:4538:4589:4596
High-Resolution P-wave Seismic Reflection Imaging of the Suzuka Basement-Involved Fold : 2005 Tokiyama Profile
鈴鹿山地東縁断層のP波浅層反射法地震探査 : 2005年時山測線
石山, 達也
124588
佐藤, 比呂志
124589
戸田, 茂
124590
杉戸, 信彦
124591
木村, 治夫
124592
越後, 智雄
124593
岡田, 真介
124594
加藤, 一
124595
岡田, 篤正
124596
小池, 太郎
124597
鈴木, 規眞
124598
今村, 朋裕
124599
服部, 泰久
124600
小田, 晋
124601
51.1
active fault
Suzuka basement-involved fold
Yoro basement-involved fold
seismic reflection profile
central Japan
application/pdf
We present new, high-resolution seismic reflection data (2005 Tokiyama profile) acquired across the piggyback basin between the Yoro and Suzuka basement-involved folds to further image its subsurface geometry. A seismic source (mini-vibrator) and 180-channel digital telemetry recording system were used in an split-spread configuration with the nearest receiver adjacent to the source to record seismic waves from deeper reflection points. A 10-m source and geophone spacing give a 5-m CMP (common midpoint) spacing on the final section. The nominal CMP stacking fold had 90 traces. We also suppressed coherent noise by repeating source points 7-10 times. After data processing including surface-consistent statics, velocity analysis, normal moveout (NMO) correction, residual statics, CMP stack, and migration, the section was finally depth-converted using stacking velocities. Reflectors imaged on the seismic profile Illuminate that the forelimb composed of Pliocene-Pleistocene Tokai Group and underlying Mesozoic basement rocks are thrust over intermontane units. The uniform thickness of the Tokai Group on the west flank of the Yoro Mountains also indicates its pregrowth nature to the Yoro basement-involved fold.
departmental bulletin paper
地震研究所
2007
application/pdf
地震研究所彙報
1
82
95
103
AN00162258
00408972
https://repository.dl.itc.u-tokyo.ac.jp/record/32490/files/IHO82111.pdf
jpn