Author's Organization:Doctoral Program of Geoscience,University of Tsukuba Institute of Geoscience,University of Tsukuba Institute of Geoscience,University of Tsukuba
Published: February 15, 1991Received: September 12, 1990Available on J-STAGE: April 11, 2008Accepted: December 18, 1990
Advance online publication: -
Revised: -