Paper

Changes in hydraulic characteristics of the crater lake burst‐induced mud flows occurred in the Mount Ruapehu on March 18, 2007

Takashi YAMADA, Tomomi MARUTANI, Vernon MANVILLE, Masanobu KIMURA and Hideji MAITA　3

Debris flow simulation based on stabilized FEM in penetration type Sabo dam

Satoshi NIWA, Ryoichi OHNO, Hiroyuki YOSHIMATSU and Kazuo KASHIYAMA　　11

The role of data preparation on shallow landslide prediction

Taro UCHIDA, Nobuyuki MORI, Keiji TAMURA,Hideki TERADA, Shigetaka TAKIGUCHI and Koji KAMEE　23

Technical Report

Determining the long‐term precipitation index by runoff monitoring of multi‐scale nested catchments
　　　Hiromichi MORIIKE, Yuichi ONDA, Maki TSUJIMURA, Shigeo HORIUCHI,Jyunichi AKANUMA and Masatomi KARAKI　32

Flooding of flood flow including scoria‐sediment to Ashigara Plains caused by Mt.Fuji Hoei Eruption
　　　Osamu TASHIRO and Setsuo HAYASHI　40

Characteristics of slope failure by the local downpour on September 4, 2007 in Kotoura‐town, Tottori prefecture
　　　Kan KOYAMA, Makoto FUJITA, Yuichi MAEDA, Yasuyuki TADA, Hirotaka OCHIAI, Tosiaki SAMMORI, Hiromu DAIMARU, Wataru MURAKAMI, Takayuki KAWAI and Naoki IWAMURA　52

Sediment dynamics in the mountainous watersheds based on differentiation of multi‐temporal LiDAR survey data sets
　　　Akira MATSUOKA, Takao YAMAKOSHI, Keiji TAMURA, Yoshiki NAGAI, Jun MARUYAMA, Toshiaki KOTAKE, Kiichiro OGAWA and Satoshi TAGATA　60

Research Notes

Experimental study on trap performance of grid shape check dam on debris flow with woody debris
　　　Hajime SHIBUYA, Daisuke HARAKI and Satoshi KATSUKI　66

Technical Notes

Debris flow control structures installed in zero‐order torrents―a debris flow fence―
　　　Takahisa MIZUYAMA, Hiroshi WADA and Kazuo YOSHIDA　74

Development of a survival room from sediment‐related hazards
　　　Takahisa MIZUYAMA, Shunichiro KASAI and Hiroshi MORIYAMA　77