Japan Geoscience Union Meeting 2023

Presentation information

Print

[J] Online Poster

H (Human Geosciences ) » H-TT Technology & Techniques

[H-TT18] New Developments in Shallow Geophysics

Tue. May 23, 2023 1:45 PM - 3:15 PM Online Poster Zoom Room (2) (Online Poster)

convener:Kyosuke Onishi(Public Works Research Institute), Toshiyuki Yokota(National Institute of Advanced Industrial Science and Technology), Shinichiro Iso(Fukada Geological Institute), Hiroshi Kisanuki(OYO corporation)

On-site poster schedule(2023/5/22 17:15-18:45)

1:45 PM - 3:15 PM

[HTT18-P02] Development of high-frequency electromagnetic hammer as a seismic source

*Toru Takahashi1 (1.Geofive Co. Ltd.)

Keywords:Electromagnetic hammer, seismic source, seismic exploration

We have developed an electromagnetic hammer as a seismic source for seismic surveys of very shallow subsurface and inspection of civil engineering structures. The source which is an electromagnetically driven solenoid hammer can generate high frequency seismic waves of more than 1 KHz. It consists of a high voltage generator and a solenoid hammer driven by it. It is a small seismic source whose external dimension of 80x90x350mm, and a weight of 5.1kg. It can be operated every 4 to 5 seconds. We have demonstrated its effectiveness through its applications to seismic surveys and inspections of very shallow subsurface and concrete structures.