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Landslides triggered by the 7 August 2009 Typhoon Morakot in southern Taiwan

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Title: Landslides triggered by the 7 August 2009 Typhoon Morakot in southern Taiwan
Authors: Lin, Ching-Weei1,2 chingwee@mail.ncku.edu.tw, Chang, Wei-Shu2, Liu, Shou-Heng1, Tsai, Tsai-Tsung2,3, Lee, Shin-Pin2,3, Tsang, Yun-Chung2,3, Shieh, Chjeng-Lun2,3, Tseng, Chih-Ming4
Source: Engineering Geology. Nov2011, Vol. 123 Issue 1/2, p3-12. 10p.
Subjects: Landslides, Typhoons, Remote-sensing images, Statistics, Eocene paleopedology, Rainfall
Geographic Terms: Taiwan
Abstract: Abstract: Landslides triggered by Typhoon Morakot with an area over 576m2 were mapped from FORMOSAT-2 images. Recognition and calculation of the number and area of landslides show that at least 22,705 landslides with a total area of 274km2 were recognized in the 7811km2 study area. Among these landslides, 17,417, with a total area of 150km2, are recognized as new ones, and 5288, with a total area of 124km2, are classified as enlarged from pre-existing ones. Out of the 22,705 landslides, there were 22,221 recognized with an area smaller than 10ha; 298 recognized in the range of 10 to 20ha. Twenty-two landslides with an area of over 60ha have also been identified, and the total area of these landslides is 20km2, which is equal to 7.37% of the total landslide area. With respect to exposed rock type, the landslides mainly occurred in Eocene-Miocene slate and Miocene sandstone and shale. In addition, Morakot-induced landslides mainly occurred in areas with cumulative precipitation in the range of 800 to 2600mm, and the magnitude of landslide concentration is roughly linearly proportional to the amount of cumulative rainfall. [Copyright &y& Elsevier]
Copyright of Engineering Geology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 66410284
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PubType: Academic Journal
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  Data: Landslides triggered by the 7 August 2009 Typhoon Morakot in southern Taiwan
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  Data: <searchLink fieldCode="AR" term="%22Lin%2C+Ching-Weei%22">Lin, Ching-Weei</searchLink><relatesTo>1,2</relatesTo><i> chingwee@mail.ncku.edu.tw</i><br /><searchLink fieldCode="AR" term="%22Chang%2C+Wei-Shu%22">Chang, Wei-Shu</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Shou-Heng%22">Liu, Shou-Heng</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tsai%2C+Tsai-Tsung%22">Tsai, Tsai-Tsung</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Lee%2C+Shin-Pin%22">Lee, Shin-Pin</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Tsang%2C+Yun-Chung%22">Tsang, Yun-Chung</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Shieh%2C+Chjeng-Lun%22">Shieh, Chjeng-Lun</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Tseng%2C+Chih-Ming%22">Tseng, Chih-Ming</searchLink><relatesTo>4</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Engineering+Geology%22">Engineering Geology</searchLink>. Nov2011, Vol. 123 Issue 1/2, p3-12. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Landslides%22">Landslides</searchLink><br /><searchLink fieldCode="DE" term="%22Typhoons%22">Typhoons</searchLink><br /><searchLink fieldCode="DE" term="%22Remote-sensing+images%22">Remote-sensing images</searchLink><br /><searchLink fieldCode="DE" term="%22Statistics%22">Statistics</searchLink><br /><searchLink fieldCode="DE" term="%22Eocene+paleopedology%22">Eocene paleopedology</searchLink><br /><searchLink fieldCode="DE" term="%22Rainfall%22">Rainfall</searchLink>
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  Label: Geographic Terms
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  Data: <searchLink fieldCode="DE" term="%22Taiwan%22">Taiwan</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: Landslides triggered by Typhoon Morakot with an area over 576m2 were mapped from FORMOSAT-2 images. Recognition and calculation of the number and area of landslides show that at least 22,705 landslides with a total area of 274km2 were recognized in the 7811km2 study area. Among these landslides, 17,417, with a total area of 150km2, are recognized as new ones, and 5288, with a total area of 124km2, are classified as enlarged from pre-existing ones. Out of the 22,705 landslides, there were 22,221 recognized with an area smaller than 10ha; 298 recognized in the range of 10 to 20ha. Twenty-two landslides with an area of over 60ha have also been identified, and the total area of these landslides is 20km2, which is equal to 7.37% of the total landslide area. With respect to exposed rock type, the landslides mainly occurred in Eocene-Miocene slate and Miocene sandstone and shale. In addition, Morakot-induced landslides mainly occurred in areas with cumulative precipitation in the range of 800 to 2600mm, and the magnitude of landslide concentration is roughly linearly proportional to the amount of cumulative rainfall. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Engineering Geology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.enggeo.2011.06.007
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        Text: English
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        PageCount: 10
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      – SubjectFull: Landslides
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      – SubjectFull: Remote-sensing images
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      – SubjectFull: Statistics
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      – SubjectFull: Eocene paleopedology
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      – SubjectFull: Rainfall
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      – SubjectFull: Taiwan
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      – TitleFull: Landslides triggered by the 7 August 2009 Typhoon Morakot in southern Taiwan
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              Text: Nov2011
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              Y: 2011
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