Spatiotemporal changes in meiofaunal composition on soft substrates in the semi-enclosed inner section of the northern Yatsushiro Sea     

Motohiro Shimanaga  Akiyo Maenaka  Toshiharu Misonou  Tatsuya Masuda  Yasuhisa Henmi 《Journal of Oceanography》2015,71(2):177-186

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Topographic and geologic controls on landslides induced by the 2015 Gorkha earthquake and its aftershocks: an example from the Trishuli Valley,central Nepal   总被引：1，自引：0，他引：1  

Ching-Ying Tsou  Masahiro Chigira  Daisuke Higaki  Go Sato  Hiroshi Yagi  Hiroshi P. Sato  Akihiko Wakai  Vishnu Dangol  Shanmukhesh C. Amatya  Akiyo Yatagai 《Landslides》2018,15(5):953-965

The devastating Gorkha earthquake (M _w 7.8) on April 25, 2015 and its aftershocks triggered numerous landslides across the Lesser and Higher Himalayas of central Nepal. This study aims to characterize these landslides, based on the local topography and geology, and to develop data for landslide hazard zoning. This study focused on a mountainous catchment of the Trishuli River, where a digital elevation model was used to examine hilllslope and river profiles, aerial photos were used to identify 155 coherent landslides, and satellite images were used to map 912 earthquake-induced landslides. The topography of this area is mainly characterized by incised V-shaped inner gorges and steep (> 35°) SW-facing scarp slopes. Although most of the coherent landslides were not reactivated by the earthquakes, the Gogane landslide was affected by the earthquake and partly failed. A majority of the earthquake-induced landslides (91%) were new landslides, while the others were enlarged old landslides. The earthquake-induced landslides occurred mainly on the steep slopes of V-shaped inner gorges and scarp slopes, in gneiss and quartzite strata of the Lesser Himalayas, and they were primarily associated with fractured rock masses. This analysis provides a framework for zoning areas vulnerable to earthquake-induced landslides.  相似文献   

Analysis software for upper atmospheric data developed by the IUGONET project and its application to polar science     

Yoshimasa Tanaka  Atsuki Shinbori  Tomoaki Hori  Yukinobu Koyama  Shuji Abe  Norio Umemura  Yuka Sato  Manabu Yagi  Satoru UeNo  Akiyo Yatagai  Yasunobu Ogawa  Yoshizumi Miyoshi 《极地研究(英文版)》2013,(4):231-240

To comprehensively understand the Arctic and Antarctic upper atmosphere, it is often crucial to analyze various data that are obtained from many regions. Infrastructure that promotes such interdisciplinary studies on the upper atmosphere has been developed by a Japanese inter-university project called the Inter-university Upper atmosphere Global Observation Network （1UGONET）. The objective of this paper is to describe the infrastructure and tools developed by IUGONET. We focus on the data analysis software. It is written in Interactive Data Language （IDL） and is a plug-in for the THEMIS Data Analysis Software suite （TDAS）, which is a set of IDL libraries used to visualize and analyze satellite- and ground-based data. We present plots of upper atmospheric data provided by IUGONET as examples of applications, and verify the usefulness of the software in the study of polar science. We discuss IUGONET＇s new and unique developments, i.e., an executable file of TDAS that can run on the IDL Virtual Machine, IDL routines to retrieve metadata from the IUGONET database, and an archive of 3-D simulation data that uses the Common Data Format so that it can easily be used with TDAS.  相似文献