caa a22 4500 467936560 CHVBK 20180406152959.0 cr unu---uuuuu 170328e20060201xx s 000 0 eng 10.1007/s11069-005-4666-8 doi (NATIONALLICENCE)springer-10.1007/s11069-005-4666-8 A GIS Process for Delimitating Areas Potentially Endangered by Debris Flow [Elektronische Daten] [Fan-Chieh Yu, Chien-Yuan Chen, Tien-Chien Chen, Feng-Yi Hung, Sheng-Chi Lin] A GIS rules-based approach is proposed for delimiting areas potentially endangered by debris flow for downstream guarded areas. Data were used to define rules for nine pilot areas in the Chen-You-Lan river watershed in Nantou County of Taiwan. A preliminary regressed relationship between debris volume and runout distance in the pilot areas is first formulated. The GIS processes for applying the rules are linked to delimit hazardous areas affected by debris within the first approximated debris fan. Rules applied to delimit potentially endangered areas incorporate geomorphological factors (gradient or curvature, aspect), direction of flow, fan angle of the debris and location of the overflow points. The delimited zone is then calibrated using the regression formula for debris volume against the affected area. The verification of the delineation of the areas using the adopted approach, with reference to micro-geomorphological results concerning pilot cases validates the proposed model. The model can be used to delineate potentially hazardous zones approximately associated with debris flow in rivers in Taiwan. Springer, 2006 debris flows nationallicence hazard delimitation nationallicence GIS nationallicence Yu Fan-Chieh National Chung Hsing University, Taichung, Taiwan, ROC aut Chen Chien-Yuan National Science and Technology Center for Disaster Reduction (NCDR), Taipei, Taiwan, ROC aut Chen Tien-Chien National Pingtung University of Science and Technology, Pingtung, Taiwan, ROC aut Hung Feng-Yi National Science and Technology Center for Disaster Reduction (NCDR), Taipei, Taiwan, ROC aut Lin Sheng-Chi National Science and Technology Center for Disaster Reduction (NCDR), Taipei, Taiwan, ROC aut Natural Hazards Kluwer Academic Publishers 37/1-2(2006-02-01), 169-189 0921-030X 37:1-2<169 2006 37 11069 https://doi.org/10.1007/s11069-005-4666-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11069-005-4666-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yu Fan-Chieh National Chung Hsing University, Taichung, Taiwan, ROC aut NATIONALLICENCE 700 1- Chen Chien-Yuan National Science and Technology Center for Disaster Reduction (NCDR), Taipei, Taiwan, ROC aut NATIONALLICENCE 700 1- Chen Tien-Chien National Pingtung University of Science and Technology, Pingtung, Taiwan, ROC aut NATIONALLICENCE 700 1- Hung Feng-Yi National Science and Technology Center for Disaster Reduction (NCDR), Taipei, Taiwan, ROC aut NATIONALLICENCE 700 1- Lin Sheng-Chi National Science and Technology Center for Disaster Reduction (NCDR), Taipei, Taiwan, ROC aut NATIONALLICENCE 773 0- Natural Hazards Kluwer Academic Publishers 37/1-2(2006-02-01), 169-189 0921-030X 37:1-2<169 2006 37 11069 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer