Youko NAKANO, Takeshi SHIMIZU, Takao YAMAKOSHI, Hiroshi KISA and Tadanori ISHIZUKA
Abstract
1. The results are compared to volcanic ash distribution map in the document and the thickness by the field survey conducted by the authors. The following conclusions are obtained:1) in terms of SAR coherence, the area between50mm and100mm volcanic ash thickness is obtained as the lower coherence area;2) in terms of SAR interferogram, the area with clear fringe pattern is in good agreement with the range between 50kg/m2 and100kg/m2 of the volcanic ash distribution map. These results indicate that the technique of DInSAR using ALOS/PALSAR can be one of useful tools in detecting an area and a thickness of volcanic ash.
Key wordsFInSAR, DInSAR, ALOS^PALSAR, L]band, volcanic ash thickness, The 2011 Shinmoe]dake eruption