Journal of Geography-Chigaku Zasshi最新文献

{"title":"Relationship between Water Color in Tidal Pools and Groundwater Flow on Foreshore, Kujukuri Beach, Chiba, Central Japan","authors":"Takeshi Yoshida, Osamu Kazaoka, T. Kusuda, K. Furuno, A. Kagawa","doi":"10.5026/jgeography.131.497","DOIUrl":"https://doi.org/10.5026/jgeography.131.497","url":null,"abstract":"","PeriodicalId":45817,"journal":{"name":"Journal of Geography-Chigaku Zasshi","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47259971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strain-rate Field of Japan Estimated from GNSS Data and Its Interpretation Based on Inter- and Intra-arc Deformation","authors":"Y. Fukahata, Tomohisa Okazaki, T. Nishimura","doi":"10.5026/jgeography.131.479","DOIUrl":"https://doi.org/10.5026/jgeography.131.479","url":null,"abstract":"― ― Abstract How to estimate a strain­rate field from spatially discrete geodetic data has been a long­ standing issue. In this paper, a method based on basis function expansion with Akaike’s Bayes­ ian information criterion （ ABIC ） is introduced, by which strain­rate fields can be obtained objec­ tively and stably. By applying the method to GNSS data in Japan, strain­rate fields are obtained for three periods: 1997 ­ 1999, 2006 ­ 2009, and 2017 ­ 2020. Except for deformation related to volcanic activity and large earthquakes, the obtained strain­rate fields are roughly stationary in time, while showing large variations in space. In order to interpret such spatially heterogeneous deformation, a framework of inter­arc and intra­arc deformation is used, considering Japanese Islands to be composed of five island arcs （ Kuril, northeast Japan, west Japan, Izu ­ Bonin, and Ryukyu ） and that these island arcs are defined with little ambiguity, though the northeast­ and west­Japan arcs are collectively treated as the Honshu arc in this study. Inter­arc deformation between the Kuril and Honshu arcs is characterized by EW contraction, the Izu ­ Bonin and Honshu arcs by NS to NW ­ SE contraction, and the Ryukyu and Honshu arcs by NS extension with EW contraction. Regarding intra­arc deformation, the Kuril arc shows high strain rates from the Pacific coast to the back of the volcanic arc, the northernmost part of the Izu ­ Bonin arc shows significant EW to NE ­ SW extension, and the Ryukyu arc shows NS extension with EW contraction similar to the inter­arc deformation with the Honshu arc, although the EW contrac­ tion is weaker to the south. The Honshu arc shows zones of high strain rates along the eastern margin of the Japan Sea via the Niigata ­ Kobe tectonic zone （ NKTZ ） to the Median Tectonic Line and along the Ou­backbone Range, while it also shows low strain rates in the Chugoku district and in the zone from northern Ibaraki prefecture via the northern Kanto district to northern Aichi prefecture, which is named the Hitachi ­ Mikawa forearc low strain­rate zone （ HMLSZ ） .","PeriodicalId":45817,"journal":{"name":"Journal of Geography-Chigaku Zasshi","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45246973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geographical Position of Kyushu Island on Inoh Map and Magnetic Declination","authors":"M. Nogami","doi":"10.5026/jgeography.131.545","DOIUrl":"https://doi.org/10.5026/jgeography.131.545","url":null,"abstract":"M. Hoyanagi pointed out a position deviation of Kyushu Island on an Inoh map with a scale of 1 to 216000. He explained it referring to the map projection adopted by Inoh and the magnetic declination at the beginning of 19 th century. In this study, the correlation between the coordinate value of an astronomical observation point on the map and the corresponding location （ latitude and longitude ） on the actual map is statistically analyzed. The coefficients of determination （ R 2 ） are calculated for maps rotated by small degrees. As a result, anticlockwise rotation of the map by 0.975 degree gave the max value of R 2 （ 0.9995 ） . This value corresponds to a magnetic declination of about 1.0 degree to the west at that time in the central region of Kyushu Island. It is concluded that the position deviation on the map is caused by magnetic declination, because Inoh considered magnetic north to be true north when surveying and mapping.","PeriodicalId":45817,"journal":{"name":"Journal of Geography-Chigaku Zasshi","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45989150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing Teaching Materials on the Geology of the Kamisugi Area in Sendai City Using the Computer Game Minecraft","authors":"J. Iwahashi, Akinobu Ando, Y. Nishioka, D. Kawabata, Takahisa Shiraishi","doi":"10.5026/jgeography.131.463","DOIUrl":"https://doi.org/10.5026/jgeography.131.463","url":null,"abstract":"","PeriodicalId":45817,"journal":{"name":"Journal of Geography-Chigaku Zasshi","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46768518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Western End of Late Cretaceous Fore-arc Basin and Provenance in SW Japan: Detrital Zircon U–Pb Dating of Upper Cretaceous–Paleogene Sandstones in Nagasaki-Nishisonogi Peninsula, Western Kyushu","authors":"Satoshi Yoshida, Y. Isozaki, Tomohito Nakano, Y. Tsutsumi","doi":"10.5026/jgeography.131.407","DOIUrl":"https://doi.org/10.5026/jgeography.131.407","url":null,"abstract":"","PeriodicalId":45817,"journal":{"name":"Journal of Geography-Chigaku Zasshi","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43323075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Blockslopes Caused by Large to Meso-scale Rock Slope Failures in the Upper Okumatajirodani Valley on the Eastern Side of Mount Maehotaka-dake North Ridge, Northern Japanese Alps","authors":"Y. Kariya, S. Harayama, Y. Matsushi, Yusuke Shimizu, H. Matsuzaki","doi":"10.5026/jgeography.131.447","DOIUrl":"https://doi.org/10.5026/jgeography.131.447","url":null,"abstract":"","PeriodicalId":45817,"journal":{"name":"Journal of Geography-Chigaku Zasshi","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46854502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiocarbon Measurements of Samples Collected from Conglomeratic Beachrock Developing at Higashihama-cho, Sasebo, Nagasaki Prefecture","authors":"K. Omoto, A. Ikeda, Y. Yokoo","doi":"10.5026/jgeography.131.473","DOIUrl":"https://doi.org/10.5026/jgeography.131.473","url":null,"abstract":"","PeriodicalId":45817,"journal":{"name":"Journal of Geography-Chigaku Zasshi","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70685097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-decadal Landform Evolution in the Sittaung River Estuary, Myanmar","authors":"Naoko Nagumo, S. Egashira","doi":"10.5026/jgeography.131.427","DOIUrl":"https://doi.org/10.5026/jgeography.131.427","url":null,"abstract":"","PeriodicalId":45817,"journal":{"name":"Journal of Geography-Chigaku Zasshi","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48518702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Monitoring Mountain Weather Variabilities Based on Decadal Observations of the Present Weather Sensor in the Highland of Central Japan","authors":"Yihui Yang, K. Ueno","doi":"10.5026/jgeography.131.393","DOIUrl":"https://doi.org/10.5026/jgeography.131.393","url":null,"abstract":"","PeriodicalId":45817,"journal":{"name":"Journal of Geography-Chigaku Zasshi","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48356461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"“Herd-like Landforms (Gyugun Tikei)” in Tokyo","authors":"","doi":"10.5026/jgeography.131.cover04_01","DOIUrl":"https://doi.org/10.5026/jgeography.131.cover04_01","url":null,"abstract":"","PeriodicalId":45817,"journal":{"name":"Journal of Geography-Chigaku Zasshi","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47594452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}