Sedimentological characteristics of the July 17, 2006 tsunami in South Java
Sedimentological characteristics of the July 17, 2006 tsunami in South Java
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2006年7月17日南爪哇海啸的沉积学特征
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
R. Weiss
中科院分区：
文献类型：
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作者：
J. Piepenbreier;H. Bahlburg;M. Spiske;H. Amijaya;R. Weiss
海啸由至少3波组成最大测量上升距离为700米最大测量上升高度为6米海啸后的形态洼地沉积物最厚的形态洼地沉积物的最大厚度为25厘米弱发展的粒度趋势（良好的排序源）2006年7月17日海啸是由一个约200公里的爪哇南部海岸造成的。10公里深的Mw7.8地震在当地时间15：19，并在20至40分钟后袭击了海岸。根据海岸和海滩的几何形状，在海岬处的上升高度超过20米（Fritz等人，2007年），并显着降低，不到2米，沿着许多直海滩。我们测量了Pandangaran以西700米的最大助跑距离。准线性碎片堆积记录了随后的三波减少淹没和助跑。海啸沉积物向陆地逐渐变细，并且通常具有侵蚀性基底。底层可能含有从被淹没的农田中结合的土壤撕裂碎屑。沉积结构包括小的电流波纹，记录了形态凹陷中的湍流。沉积物由多达5层的中细砂组成，显示出弱发育的内陆变细趋势。可以对各个层进行分级。.
tsunami consisted of at least 3 waves maximum measured run up distance was 700 m maximum measured run up height was 6 m tsunami backwash followed morphological depressions sediments are thickest in morphological depressions maximum thickness of deposits is 25 cm weakly developed grainsize trends (well sorted source) The 17 July 2006 tsunami was caused 200 km off the south coast of Java by a ca. 10 km deep Mw 7.8 earthquake at 15:19 local time and struck the coast between 20 and 40 minutes later. Depending on the geometry of coast and beaches, run-up heights exceeded 20 m at headlands (Fritz et al., 2007), and were significantly lower, less than 2 m, along many straight beaches. We measured the maximum run-up distance of 700 m west of Pandangaran. Quasi-linear debris accumulations document up to three subsequent waves of decreasing inundation and run-up. The tsunami deposits taper landward and often have erosive bases. Bottom layers may contain soil rip-up clasts incorporated from inundated agricultural fields. Sedimentary structures include small current ripples documenting backwash flow in morphological depressions. Deposits consist of up to 5 layers of medium and fine sand which display a weakly developed fining inland trend. Individual layers may be graded. .