{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,17]],"date-time":"2026-03-17T19:40:54Z","timestamp":1773776454893,"version":"3.50.1"},"reference-count":26,"publisher":"Wiley","issue":"17","license":[{"start":{"date-parts":[[2018,7,19]],"date-time":"2018-07-19T00:00:00Z","timestamp":1531958400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["16H03151"],"award-info":[{"award-number":["16H03151"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006086","name":"Disaster Prevention Research Institute, Kyoto University","doi-asserted-by":"publisher","award":["H28\u201001"],"award-info":[{"award-number":["H28\u201001"]}],"id":[{"id":"10.13039\/501100006086","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Hydrological Processes"],"published-print":{"date-parts":[[2018,8,15]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>A comprehensive understanding of seasonal hydrological dynamics is required to describe the influence of pore\u2010water pressure on the stability of landslides in snowy regions. This study reports on the results of continuous meteorological and hydrological observations over 2\u00a0years on a landslide body comprising Neogene sedimentary rocks in northern Japan, where a thick (3\u20135\u00a0m) seasonal snowpack covers the land surface. Monitoring of the volumetric water content in shallow unsaturated zones (&lt;0.8\u00a0m depth) and pore\u2010water pressure in saturated bedrock at depths of 2.0 and 5.2\u00a0m revealed clear seasonality in hydrological responses to rainfall and meltwater supply. During snow\u2010free periods, both the shallow soil moisture and deep pore\u2010water pressure responded rapidly to intense rainwater infiltration. In contrast, during snowmelt, the deep pore pressure fluctuated in accordance with the daily cycle of meltwater input, without notable changes in shallow moisture conditions. During occasional foehn events that cause intense snow melting in midwinter, meltwater flows preferentially through the layered snowpack, converging to produce a localized water supply at the ground surface. This episodically triggers a significant rise in pore\u2010water pressure. The seasonal differences in hydrological responses were characterized by a set of newly proposed indices for the magnitude and quickness of increases in the pressure head near the sliding surface. Under snow\u2010covered conditions, the magnitude of the pressure increase tends to be suppressed, probably owing to a reduction in infiltration caused by a seasonal decrease in the permeability of surface soils, and effective pore\u2010water drainage through the highly conductive colluvial layer. Deep groundwater flow within bedrock remained in a steady upwelling state, enhanced by increasing moisture in shallow soils under snow cover, reflecting the convergence of subsurface water from surrounding hillslopes.<\/jats:p>","DOI":"10.1002\/hyp.13212","type":"journal-article","created":{"date-parts":[[2018,6,25]],"date-time":"2018-06-25T13:42:25Z","timestamp":1529934145000},"page":"2695-2707","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Seasonal transition of hydrological processes in a slow\u2010moving landslide in a snowy region"],"prefix":"10.1002","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7930-4482","authenticated-orcid":false,"given":"Hikaru","family":"Osawa","sequence":"first","affiliation":[{"name":"Graduate School of Science Kyoto University  Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuki","family":"Matsushi","sequence":"additional","affiliation":[{"name":"Disaster Prevention Research Institute Kyoto University  Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4045-6881","authenticated-orcid":false,"given":"Sumio","family":"Matsuura","sequence":"additional","affiliation":[{"name":"Disaster Prevention Research Institute Kyoto University  Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takashi","family":"Okamoto","sequence":"additional","affiliation":[{"name":"Forest Research and Management Organization Forestry and Forest Products Research Institute  Tsukuba Ibaraki Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7924-4638","authenticated-orcid":false,"given":"Tatsuya","family":"Shibasaki","sequence":"additional","affiliation":[{"name":"Graduate School of Science Kyoto University  Kyoto Japan"},{"name":"Japan Conservation Engineers &amp; Co., Ltd.  Fukushima Fukushima Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroyuki","family":"Hirashima","sequence":"additional","affiliation":[{"name":"Snow and Ice Research Center National Research Institute for Earth Science and Disaster Resilience  Niigata Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2018,7,19]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.3313\/jls1964.21.3_11"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1029\/2009JF001321"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1029\/2009JF001463"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/hyp.7981"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.5110\/jjseg.45.281"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.2151\/jmsj.83.783"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.3313\/jls1964.37.2_10"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.enggeo.2008.03.007"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0013-7952(02)00245-4"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10064-012-0456-1"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1007\/s12665-017-6693-7"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.3178\/jjshwr.9.48"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.3313\/jls1964.7.1"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.3313\/jls.44.358"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.enggeo.2017.02.019"},{"key":"e_1_2_8_17_1","unstructured":"Sato H.(2014).Landslide movements influenced by groundwater behavior. Doctoral thesis Niigata University 186. (in Japanese with English abstract)."},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.3313\/jls.41.37"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.3313\/jls1964.27.27"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10346-009-0157-4"},{"issue":"1","key":"e_1_2_8_21_1","first-page":"1","article-title":"Temperature\u2010dependent residual shear strength characteristics of smectite\u2010bearing landslide soils","volume":"3","author":"Shibasaki T.","year":"2017","journal-title":"Journal of Geophysical Research: Solid Earth"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1002\/2016GL069604"},{"key":"e_1_2_8_23_1","unstructured":"Shibasaki T. Shinoda K. &Yamasaki T.(2008).Possible mechanism to explain various landslide behaviors during snow season. 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