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Volume 17, issue 11 | Copyright
Nat. Hazards Earth Syst. Sci., 17, 1907-1921, 2017
https://doi.org/10.5194/nhess-17-1907-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 13 Nov 2017

Research article | 13 Nov 2017

Multiple remote-sensing assessment of the catastrophic collapse in Langtang Valley induced by the 2015 Gorkha earthquake

Hiroto Nagai et al.
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Ball, G. H. and Hall, D. J.: ISODATA, a novel method of data analysis and pattern classification, available at: http://www.dtic.mil/cgi-bin/GetTRDoc?Location=U2&doc=GetTRDoc.pdf&AD=AD0699616 (last access: 7 November 2017), 1965.
Cadwalladr, C.: Nepal earthquake: the village wiped off the map in a few terrifying seconds, available at: http://www.theguardian.com/world/2015/may/17/nepal-earthquake-langtang-village-everyone-was-dead (last access: 7 November 2017), 2015.
Fujita, K., Inoue, H., Izumi, T., Yamaguchi, S., Sadakane, A., Sunako, S., Nishimura, K., Immerzeel, W. W., Shea, J. M., Kayastha, R. B., Sawagaki, T., Breashears, D. F., Yagi, H., and Sakai, A.: Anomalous winter-snow-amplified earthquake-induced disaster of the 2015 Langtang avalanche in Nepal, Nat. Hazards Earth Syst. Sci., 17, 749–764, https://doi.org/10.5194/nhess-17-749-2017, 2017.
Ge, L., Ng, A. H.-M., Li, X., Liu, Y., Du, Z., and Liu, Q.: Near real-time satellite mapping of the 2015 Gorkha earthquake, Nepal, Ann. GIS, 21, 175–190, https://doi.org/10.1080/19475683.2015.1068221, 2015.
Goda, K., Kiyota, T., Pokhrel, R. M., Chiaro, G., Katagiri, T., Sharma, K., and Wilkinson, S.: The 2015 Gorkha Nepal Earthquake: Insights from Earthquake Damage Survey, Front. Built Environ., 1, 1–15, https://doi.org/10.3389/fbuil.2015.00008, 2015.
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We demonstrated an assessment of the sediments caused by a catastrophic avalanche, induced by the main shock of the 2015 Gorkha Earthquake in Nepal. A Japanese space-borne sensor, PALSAR-2, have a high potential for delineating the hazardous zone. Comparison of pre- and post-high-resolution topographic data estimates the avalanche-induced sediment volume as 5.51 × 106 m3. High-resolution satellite imagery revealed that it has multiple layers of sediment with different physical properties.
We demonstrated an assessment of the sediments caused by a catastrophic avalanche, induced by...
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