{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360004239487460352.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.3390/geosciences8030099"}},{"identifier":{"@type":"URI","@value":"https://www.mdpi.com/2076-3263/8/3/99/pdf"}},{"identifier":{"@type":"HANDLE","@value":"10852/71308"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Regional Geomorphological Conditions Related to Recent Changes of Glacial Lakes in the Issyk-Kul Basin, Northern Tien Shan"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>To assess the current state of glacial lakes, we examine the seasonal lake-area changes of 339 glacial lakes in the Teskey and Kungoy Ranges of the Issyk-Kul Basin, Kyrgyzstan, during 2013–2016 based on optical satellite images (Landsat7/ETM+ and 8/OLI). The glacial lakes are classified into six types based on their seasonal variations in area: stable, increasing, decreasing, appearing, vanishing, and short-lived. We then track the number of each type in a given year and examine how each number changes from one year to the next. We find that many appearing, vanishing, and short-lived types occurred in both mountain ranges, having a large variability in number that is not directly related to the local short-term summer temperature anomaly, nor to precipitation or glacier recession. However, those in the Teskey Range vary significantly more than those in the Kungoy Range. To determine if the changing number and distribution of the various lake types may be due to changes in ground ice, we apply differential interferometric synthetic aperture radar (DInSAR) analysis using ALOS-2/PALSAR-2 for the debris landforms behind which glacial lakes appear. In the Teskey Range, ground ice occurs in 413 out of a total of 930 debris landforms, whereas in the Kungoy Range, ground ice occurs in 71 out of 180. In zones with predominant glacier-retreat during 1971–2010 (from Corona KH-4B and ALOS/PRISM), the Teskey Range had 180 new lake depressions as potential lake-basins, whereas the Kungoy Range had just 22. Existing depressions also expanded when melting ice produced subsidence. Such subsidence, together with debris landforms containing ground ice and ice tunnels, appear to cause the observed large number variability. In particular, the deposition of ice and debris by tunnel collapse or the freezing of storage water in a debris landform may close-off an ice tunnel, causing a lake to appear. Subsequent re-opening via melting of such blockage would produce either a vanishing or a short-lived type. In this way, the large variability in the number of each lake type and the distribution of types over this four-year period arises from regional geomorphological conditions and not directly from the local short-term summer temperature anomaly and precipitation or glacier recession.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380004239487460098","@type":"Researcher","foaf:name":[{"@value":"Mirlan Daiyrov"}],"jpcoar:affiliationName":[{"@value":"Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan"},{"@value":"Central-Asian Institute for Applied Geosciences (CAIAG), Bishkek 720027, Kyrgyzstan"}]},{"@id":"https://cir.nii.ac.jp/crid/1420001326232887808","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"50462205"},{"@type":"NRID","@value":"1000050462205"},{"@type":"ORCID","@value":"0000-0002-8233-9053"},{"@type":"NRID","@value":"9000000853051"},{"@type":"NRID","@value":"9000370257528"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/narama"}],"foaf:name":[{"@value":"Chiyuki Narama"}],"jpcoar:affiliationName":[{"@value":"Department of Environmental Science, Niigata University, Niigata 950-2181, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004239487460357","@type":"Researcher","foaf:name":[{"@value":"Tsutomu Yamanokuchi"}],"jpcoar:affiliationName":[{"@value":"Remote Sensing Technology Center of Japan (RESTEC), Tokyo 105-0001, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004239487460099","@type":"Researcher","foaf:name":[{"@value":"Takeo Tadono"}],"jpcoar:affiliationName":[{"@value":"Japan Aerospace Exploration Agency (JAXA), Tsukuba 305-8505, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004239487460230","@type":"Researcher","foaf:name":[{"@value":"Andreas Kääb"}],"jpcoar:affiliationName":[{"@value":"Department of Geosciences, University of Oslo, 0316 Oslo, Norway"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004239487460355","@type":"Researcher","foaf:name":[{"@value":"Jinro Ukita"}],"jpcoar:affiliationName":[{"@value":"Department of Environmental Science, Niigata University, Niigata 950-2181, Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"20763263"}],"prism:publicationName":[{"@value":"Geosciences"}],"dc:publisher":[{"@value":"MDPI AG"}],"prism:publicationDate":"2018-03-14","prism:volume":"8","prism:number":"3","prism:startingPage":"99"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["https://creativecommons.org/licenses/by/4.0/"],"url":[{"@id":"https://www.mdpi.com/2076-3263/8/3/99/pdf"}],"createdAt":"2018-03-15","modifiedAt":"2025-10-11","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=glacial%20lake","dc:title":"glacial lake"},{"@id":"https://cir.nii.ac.jp/all?q=QE1-996.5","dc:title":"QE1-996.5"},{"@id":"https://cir.nii.ac.jp/all?q=550","dc:title":"550"},{"@id":"https://cir.nii.ac.jp/all?q=Geology","dc:title":"Geology"},{"@id":"https://cir.nii.ac.jp/all?q=Tien%20Shan","dc:title":"Tien Shan"},{"@id":"https://cir.nii.ac.jp/all?q=debris%20landform","dc:title":"debris landform"},{"@id":"https://cir.nii.ac.jp/all?q=depressions","dc:title":"depressions"},{"@id":"https://cir.nii.ac.jp/all?q=geomorphological%20condition","dc:title":"geomorphological condition"},{"@id":"https://cir.nii.ac.jp/all?q=glacial%20lake;%20depressions;%20debris%20landform;%20geomorphological%20condition;%20DInSAR;%20Tien%20Shan","dc:title":"glacial lake; depressions; debris landform; geomorphological condition; DInSAR; Tien Shan"},{"@id":"https://cir.nii.ac.jp/all?q=DInSAR","dc:title":"DInSAR"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040282256878373760","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"16H05642"},{"@type":"JGN","@value":"JP16H05642"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16H05642/"}],"notation":[{"@language":"ja","@value":"天山山脈北部地域における短命氷河湖の環境条件の解明と減災対策の構築"},{"@language":"en","@value":"Geomorphological conditions of short-lived glacial lake in the northern part of the Tien Shan."}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050285299937528960","@type":"Article","resourceType":"学術雑誌論文(journal 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