IV. Related Results of Recent Activities in CRL

IV-1. The Metropolitan Diamond Cross Experiments

by Tetsuro KONDO, Jun AMAGAI, Yasuhiro KOYAMA, Kosuke HEKI Taizoh YOSHINO, Fujinobu TAKAHASHI, Hiroo KUNIMORI, Michito IMAE, Noriyuki KURIHARA, Hitoshi KIUCHI, Shin'ichi HAMA, Yukio TAKAHASHI, Hiroshi TAKABA, Takahiro IWATA, Yuko HANADO, Akihiro KANEKO, Kuniyasu IMAMURA, Toshimichi OTSUBO Makoto MURAKAMI*, Shigeru MATSUZAKA*, Mikio TOBITA*, Misao ISHIHARA*, Takeji KOMETANI*, Tsugunori NARITA*, and Masaru KOITABASHI*

* Geographical Survey Institute, Kitazato 1, Tsukuba-shi, Ibaraki 305, Japan.

Abstract

VLBI measurements using stations around the Tokyo metropolitan area started in 1992 in cooperation with the Geographical Survey Institute to monitor regional crustal deformation there and to establish reference points for a local geodetic survey. Repeated measurements have revealed that the 100 km baseline between two of stations (Kashima and Koganei) has been becoming shorter at a rate of about 5 mm/year due to a compressional stress field owing to the subducting Pacific plate.

For request of pre-prints, please send e-mail to the main author (kondo(AT)nict.go.jp). Last Update: Feb. 21, 1995