The 967th DANWAKAI (program)Announcement of the 967th DANWAKAI
(Danwakai: ERI Holds “Danwakai”, a monthly meeting where its members present their
most recent academic and technical achievements, on a Friday of every month.
Danwakai is open to the public.)
Date: Friday, 19 January 13:30-
Place: ERI Bldg.2, 5th floor, Conference room1
TITLE: Upper mantle structure beneath the Pacific Ocean revealed by land and
seafloor broadband observations
AUTHOR: *Takehi ISSE, Hitoshi KAWAKATSU, Kazunori YOSHIZAWA (Hokkaido Univ.),
Hajime SHIOBARA, Hiroko SUGUOKA (Kobe Univ.), Aki ITO (JAMSTEC),
Daisuke SUETSUGU (JAMSTEC), and Hisashi UTADA
SUMMARY: We show the three dimensional shear wave structure in the upper
mantle beneath the Pacific Ocean using land and BBOBS data.
TITLE: Location and depth of the 1855 Ansei Edo earthquake inferred from
seismic intensity characteristic
AUTHOR: * Ryoichi NAKAMURA･Kenji SATAKE･Akihito NISHIYAMA･Naoshi HIRATA,
Takeo ISHIBE(ADEP) and Jun MURAGISHI(Taisho Univ.)
TITLE: Monitoring of volcanic acitivities by a network of absolute gravimeters
using a telecom-wavelength laser
AUTHOR: * Akito ARAYA, Keisuke KASAI･Masato YOSHIDA･Masataka NAKAZAWA (RIEC,Tohoku U.),
Yoshiaki TAMURA (NAOJ) and Tsuneya TSUBOKAWA (Shin-ei Keisoku).
SUMMARY: We report current status of an absolute gravimeter using
a telecom-wavelength laser that can transmit at a long distance, and prospects
for its application to a network for monitoring volcanic activities.