期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2010
卷号：XXXVIII - Part 8
页码：293-297
出版社：Copernicus Publications
摘要：The efficient measurement of the small-scale ground deformation caused by an eruption over a large area is difficult. Mukoyama (2009) developed a new method for extracting the vector of ground displacement by applying the image-matching analysis technique to the visual image of the geomorphic quantity. In this study, we used the particle imagine velocimetry (PIV) method for image-matching analysis in a volcanic field. For image matching, we created a slope gradation map from a 10m DEM before (30 Mar 2000) and after (22 Jun 2000) the eruption. We used this to estimate the small displacement in the large-scale ground deformation. It became clear that the center of the movement in the horizontal direction was located at the northwestern foot of Mt. Nishiyama. The deformation that spread radially from there was also detected. This tendency was also seen in photogrammetric analysis data (Suto et al., 2002) and in matching SAR images (Tobita et al., 2001). An advantage of this technique during a time of disaster is that analysis can be conducted quickly. Analysis of this object range (2.5km × 3.3km) required approximately 1 minute. When a volcano is active, the data needed for a specific place may not be immediately available. As such, the improvement of prior data and the construction of a network and its effective utilization are important. We are confident that this method is effective for tracking the transitional deformation of volcanic edifices, etc
