COASTAL SEDIMENTATION ASSOCIATED WITH THE JUNE 2ND AND 3RD, 1994 TSUNAMI IN RAJEGWESI, JAVA

This paper presents the second detailed study of sediments deposited b y modern tsunamis, the first being that of the Flores (Indonesia) tsun ami of December 1992 (Shi et nl., 1995). Sediment cores were collected from areas in which eyewitnesses reported sediment deposition. Grain size analysis shows pronounced vertical variations in grain size as we ll as changes in standard deviation, skewness and kurtosis that appear to be indicative of complex tsunami flooding. Vertical variations in grain size in individual cores are greater than spatial variations bet ween cores taken along a transect completed perpendicular to the coast line. The Java tsunami-deposited sediments do not show unequivocal evi dence of local erosion but instead evidence for sediment transport and deposition is clear and is characterised by dominantly unimodal sedim ents with fine-tailed distributions. Copyright (C) 1996 Elsevier Scien ce Ltd