Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/68694
DC FieldValueLanguage
dc.contributor.authorChen, C.Y.en_US
dc.contributor.authorYu, F.C.en_US
dc.contributor.authorLin, S.C.en_US
dc.contributor.authorCheung, K.W.en_US
dc.date2007zh_TW
dc.date.accessioned2014-06-11T05:57:11Z-
dc.date.available2014-06-11T05:57:11Z-
dc.identifier.issn0197-9337zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/68694-
dc.description.abstractThe study contains descriptions of landslides and debris flows in a small upland catchment in Taiwan between 1986 and 2004. This catchment, the Chushui Creek, is situated near the epicentre of the 1999 M7-6 Chi-Chi earthquake. This is an area with high background erosion rate. The Chi-Chi earthquake caused a sharp increase in the rate of mass wasting in the epicentral area, and the data presented in this study illustrates the geomorphic change associated with the earthquake. The measurements of the geometry of the trunk stream of the Chushui catchment also show its change due to the impact of a strong typhoon in 1996. Two channel reaches that were affected by separate debris flows during this event were identified. Each reach has three sections: scour, transfer and deposition. Cross profiles of these sections show a systematic change from V-shaped bedrock channel in the scour areas to flat-floored channel in the transfer and deposition areas. Debris flows also occurred on other occasions in this channel, and their frequency has increased since the 1999 earthquake. In addition, this study contains precise geographic and statistical descriptions of the landslides triggered by three typhoons and an earthquake that affected the catchment since 1996. The total landslide area is measured for different time intervals, and a marked increase in landslide incidence is found after the 1999 earthquake. Frequency-area plots of the 126 landslides in the catchment indicate a powerlaw scaling with an exponent of about -1-5 of these quantities, as has been observed in other studies. We propose that a link exists between landslide frequency-area distributions and initialization of debris flow in the catchment. It may be classified as a self-organized criticality process with a critical frequency-area distribution for the landslide population. In this case, the landslide frequency-area distribution is useful in quantifying the severity of the trigger and the contribution of landslides to debris flow. Copyright (c) 2006 John Wiley & Sons, Ltd.en_US
dc.language.isoen_USzh_TW
dc.relationEarth Surface Processes and Landformsen_US
dc.relation.ispartofseriesEarth Surface Processes and Landforms, Volume 32, Issue 2, Page(s) 197-209.en_US
dc.relation.urihttp://dx.doi.org/10.1002/esp.1400en_US
dc.subjectdebris flowsen_US
dc.subjectlandslidesen_US
dc.subjectfrequency-area statisticsen_US
dc.subjectChi-Chi earthquakeen_US
dc.subjectself-organized criticalityen_US
dc.subjectnatural hazardsen_US
dc.subjectmountain belten_US
dc.subjectcascade modelen_US
dc.subjectsedimenten_US
dc.titleDiscussion of landslide self-organized criticality and the initiation of debris flowen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1002/esp.1400zh_TW
Appears in Collections:期刊論文
文件中的檔案:

取得全文請前往華藝線上圖書館



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.