極浅層反射法地震探査による千屋断層(一丈木)の地下断面

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タイトル別名
  • High resolution, very shallow seismic reflection profiling across active faults: a case study of the Senya fault, Akita Prefecture, Northeast Japan
  • ゴクセンソウ ハンシャホウ ジシン タンサ ニ ヨル センヤ ダンソウ イチジョウギ ノ チカ ダンメン

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抄録

A high-resolution P-wave seismic reflection profile was acquired across the toe of the Senya thrust, northern Honshu, Japan, to test the applicability of profiling using a hummer source (3.5 kg). Seismic data was recorded by a portable recording system (60 ch), with 28Hz geophones spaced at 0.5m intervals, and processed by standard Common Mid-Point (CMP) method. The obtained seismic section clearly demonstrates an eastdipping thrust down to 40-m in depth. The geometry of the thrust well fit to the subsurface structure estimated by drill core data.

収録刊行物

  • Active Fault Research

    Active Fault Research 2001 (20), 40-45, 2001

    Japanese Society for Active Fault Studies

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