geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Effects of strong ground motion on the susceptibility of gully type debris flows


, : Effects of strong ground motion on the susceptibility of gully type debris flows. Engineering Geology 104.3-4

Typhoon Herb in 1996 caused widespread debris flows in central Taiwan. The 7.3 Chi-Chi earthquake on September 21, 1999, which also took place in central Taiwan, induced many landslides in the region. These landslides turned into debris flows when Typhoon Toraji struck Taiwan in 2001. This research selects three regions which suffered a ground motion class of 5, 6, and 7 on the Richter scale during the Chi-Chi earthquake as study areas. Air photos from 1997 and 2001 of these regions are used to map the gully-type debris flows that took place after Typhoons Herb and Toraji, respectively. The gullies adjacent to the debris flow, but without a trace of debris flows, are also mapped as the non-debris flow data. The topography, hydrogeology, and rainfall factors--where debris flow occurred and in which there was no occurrence of debris flows in these gullies were retrieved from DTM, geological maps, and iso-contour maps, and of rainfall through GIS processing. These characteristics are introduced into a probabilistic neural network to build a predicting model for the probability of the occurrence of debris flows. Three series of cross analyses are conducted to compare the probability of the occurrence of debris flows of the same dataset predicted by different prediction models. The results reveal that the susceptibility of debris flows was elevated after the Chi-Chi earthquake struck. The upsurge of susceptibility was more obvious for the regions that received a higher class of ground motion.

US$19.90

DOI: 10.1016/j.enggeo.2008.10.012


Other references

Crilly, R.; Hodsman, A.; Platt, N.; Cook, C.; Adachi, J., 1996: Predicting response to etidronate in osteoporosis. Arthritis & Rheumatism 39(9 SUPPL ): S138

Hall, R.P., 1932: Relation of pH of the medium to growth of Eugiena deses and E. anabaena var. minor in light and darkness. Anatomical Record Philadephia Suppl, 54: 102

Sailer, B.L.; Jost, L.K.; Evenson, D.P., 1996: Bull sperm head morphometry related to abnormal chromatin structure and fertility. This study investigated the relationship between morphologically abnormal sperm, sperm chromatin structure, and fertility. Semen samples were obtained from 13 bulls. The sperm chromatin structure assay (SCSA), a sensitive measure of denaturability...

Flint, L.M., 1986: What do residents do for an academic health center? A personal view. Current Surgery 43(4): 275-278

Q.P.; E.A., 1986: Silent s t segment depression in patients with coronary heart disease detected by ambulatory keg monitoring. To assess the value of DCG for detecting silent ischemia in ischemic heart diseases 24- hour-DCG monitoring and submaximal bicycle ergometric test (BET) were performed on 30 patients of ischemic heart disease and on 34 normal subjects as control....

Haas, G., 1964: Horst- und Partnerwechsel eines mannlichen Weisstorchs innerhalb einer Brutzeit. Jahresheft des Vereins fuer Vaterlaendische Naturkunde in Wuerttemberg, 118-119: 382-385

Carlsson C., 1967: Muscular strength in chronic alcoholics human. Nordisk Medicin 77(1): 17-19

Napalkov, P.N.; Miroshnikov, B.I., 1980: Characteristics of the course and surgical treatment of ulcers of the cardial portion of the stomach in elderly persons. Khirurgiia: 28-30

Konya, A.; Wallace, S.; Wright, K.C., 2002: Occlusion method and apparatus. An occlusion method and apparatus. The occluder includes a elastically deformable members and a jacket. The elastically deformable members are secured in spaced relation and extend in arcuate conformation therebetween. The jacket covers at least a...

Huggenberger, H.J.; Suter, S.E.; Reijnen, E.; Schachinger, H., 2009: Cradling side preference is associated with lateralized processing of baby facial expressions in females. Women’s cradling side preference has been related to contralateral hemispheric specialization of processing emotional signals; but not of processing baby’s facial expression. Therefore, 46 nulliparous female volunteers were characteriz...