| FullText URL | esr_025_contents.pdf |
|---|---|
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2018-12-27 |
| Volume | volume25 |
| Issue | issue1 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| FullText URL | esr_025_colophon.pdf |
|---|---|
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2018-12-27 |
| Volume | volume25 |
| Issue | issue1 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| JaLCDOI | 10.18926/ESR/56695 |
|---|---|
| FullText URL | esr_025_039_048.pdf |
| Author | Knittel, Ulrich| Walia, Monika| Suzuki, Shigeyuki| Lee, Yuan-Hsi| |
| Abstract | The high-P/low-T Sanbagawa Metamorphic Belt that traverses SW Japan, has been subdivided into two belts thought to have been metamorphosed at ca. 120 Ma and at ca. 65 Ma (‘Sanbagawa Metamorphic Rocks’ and ‘Shimanto Metamorphic Rocks’). The subdivision was based on the assumption that metamorphism occurred at ca. 116 Ma, largely based on an early Rb-Sr isotope study and zircon data obtained for the eclogite unit of the Sanbagawa Belt, whereas in some parts of the belt detrital zircons of late Cretaceous age (90-80 Ma) were discovered. Analysis of detrital zircons sampled from two sites within the area considered to expose the older ‘Sanbagawa Metamorphic Rocks’, including the area investigated by the Rb-Sr study, reveals the presence of zircons younger than 95 Ma in all samples and some grains as young as 80 ± 4 Ma. It is therefore concluded that the Sanbagawa Belt is one single tectonic entity that formed in the Late Cretaceous though it contains older components, including fossiliferous clasts, older basic meta-volcanics and eclogite units that may record earlier metamorphic events. |
| Keywords | U-Pb zircon dating Sanbagawa Metamorphic Belt Late Cretaceous Asemi River |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2018-12-27 |
| Volume | volume25 |
| Issue | issue1 |
| Start Page | 39 |
| End Page | 48 |
| ISSN | 1340-7414 |
| language | 英語 |
| Copyright Holders | © 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| JaLCDOI | 10.18926/ESR/56694 |
|---|---|
| FullText URL | esr_025_031_038.pdf |
| Author | Amano, Hideki| Suzuki, Shigeyuki| Sato, Masaru| Yanagida, Makoto| |
| Abstract | The study area is situated in Japan Sea side margin of the Shakotan Peninsula, Hokkaido, Japan, where MIS5e Terrace is preserved along the cost. Numbers of tight drilling have done to establish new method for terrace analysis. Buried wave cut terrace and sea cliff (when the MIS5e Terrace was formed) are reconstructed by distribution of the terrace deposits and these bottom of unconformity planes. The precise site and altitude of former shoreline was also obtained. Altitudes of the former shoreline from the 7 sections are almost the same 22 to 27m in height. Previous data of the height of shoreline are obtained from the topographic MIS5e Terrace surface. The altitudes have variation from 30m to 60m. It suggests that the traditional method for the MIS5e terrace analysis had some errors in the study area. |
| Keywords | MIS5e marine terrace terrace deposits tight drilling shoreline |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2018-12-27 |
| Volume | volume25 |
| Issue | issue1 |
| Start Page | 31 |
| End Page | 38 |
| ISSN | 1340-7414 |
| language | 英語 |
| Copyright Holders | © 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| JaLCDOI | 10.18926/ESR/56693 |
|---|---|
| Title Alternative | Development of an interdisciplinary study plan on the seasonal transition from autumn to winter around the Japan Islands (Through the lesson study at junior high school with attention to the shallow convective rainfall “Shi-gu-re” in the cold air outbreak situations in early winter) |
| FullText URL | esr_025_019_030.pdf |
| Author | Kato, Kuranoshin| Nishikawa, Sari| Nakakura, Toshimi| |
| Abstract | An interdisciplinary study plan on the seasonal transition from autumn to winter around the Japan Islands and the “seasonal feeling” associated with the shallow convective rainfall “Shi-gu-re” in that stage expressed in the Japanese classic poems called “Wa-ka” was developed, through a lesson study at junior high school. In that study plan, special attention was paid to the seasonal evolution of the larger-scale systems from autumn to winter, such as the Siberian air mass and the Siberian high, and the relation to the cold air intrusion into the Japan Sea and the Japan Islands. According to the analysis of the lesson practice results, students seem to understand that the winter-type weather pattern becomes dominant around November, together with the features of the intermittent rainfall in the winter-type pressure pattern called “Shi-gu-re” expressed in the “Wa-ka”. However, necessity of further improvement of the study plan was pointed out, so that the students can understand more exactly the role of the seasonal development of the Siberian high and Siberian air mass in the climate around the Japan Islands. |
| Keywords | Interdisciplinary collaboration between climate and cultural understanding education Climate environment around Japan Transition from autumn to winter around Japan “Seasonal feeling” in early winter expressed in the Japanese classic literature ESD |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2018-12-27 |
| Volume | volume25 |
| Issue | issue1 |
| Start Page | 19 |
| End Page | 30 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| JaLCDOI | 10.18926/ESR/56692 |
|---|---|
| Title Alternative | Synoptic climatological analyses on the large day-to-day variation of air temperature around Germany in winter (Relating to the “seasonal feeling” in “Fasnacht”, the festival for driving the winter away) |
| FullText URL | esr_025_007_017.pdf |
| Author | Hamaki, Tatsuya| Kato, Kuranoshin| Otani, Kazuo| Kato, Haruko| Matsumoto, Kengo| |
| Abstract | Synoptic climatological analyses associated with the large day-to-day variation of air temperature around Germany in winter were performed based mainly on the NCEP/NCAR reanalysis data for 2000/2001 to 2010/2011 winters, with an interest in the relationship to the “seasonal feeling” in “Fasnacht”, the festival for driving the winter away. The intermittent appearance of the extremely cold days with rather large day-to-day variation in winter as pointed out by Kato et al. (2017) for around Germany was seen also to the north and to the east of Germany. According to a case study for the 2000/2001 winter, such large daily mean temperature fluctuation was closely related to the intraseasonal variation of the Icelandic low with about one month period, i.e., while the temperature around Germany was relatively higher at the eastward shift phase of the Icelandic low due to the strong warm air advection by the SW-ly wind, the temperature was extremely low there when the Icelandic low was weakened and retreated westward. |
| Keywords | Comparative climatology Climate around Europe Synoptic climatology on daily temperature variation in winter around Germany seasonal cycle and “seasonal feeling” |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2018-12-27 |
| Volume | volume25 |
| Issue | issue1 |
| Start Page | 7 |
| End Page | 17 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| JaLCDOI | 10.18926/ESR/56691 |
|---|---|
| Title Alternative | Non-calcareous beachrock found in Akagurisaki, Ohi Town, Fukui Prefecture |
| FullText URL | esr_025_001_005.pdf |
| Author | Suzuki, Shigeyuki| Azuma, Yoichi| Deyama, Yasuyo| Yukawa, Hirokazu| Usui, Mayumi| |
| Abstract | Beachrock which was formed about 0.5 meter higher than high tide is found in Akagurisaki, Ohi Town, Fukui Prefecture. The outcrops always get wet by spring water. The sediments are composed of well sorted rounded gravels and sands but calcareous shell is not found at all. Intergranular space is occupied by white amorphous cement. Magnesium and silicon rich composition of the cement is obtained by EPMA analysis. There is a conjecture that the magnesium rich cement was precipitated in spite of solution of calcareous shell under saturated state by spring water, because calcium has a higher tendency to ionize than magnesium. |
| Keywords | Beachrock Akagurisaki non-calcareous cement ionization tendency |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2018-12-27 |
| Volume | volume25 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 5 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| FullText URL | esr_025_titlepage.pdf |
|---|---|
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2018-12-27 |
| Volume | volume25 |
| Issue | issue1 |
| ISSN | 1340-7414 |
| language | 英語 |
| Copyright Holders | © 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| FullText URL | esr_025_cover.pdf |
|---|---|
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2018-12-27 |
| Volume | volume25 |
| Issue | issue1 |
| ISSN | 1340-7414 |
| language | 英語 |
| Copyright Holders | © 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| FullText URL | esr_024_1_contents.pdf |
|---|---|
| Author | Department of Earth Sciences, Faculty of Science, Okayama University | |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2017-12-27 |
| Volume | volume24 |
| Issue | issue1 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2017 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| FullText URL | esr_024_1_colophon.pdf |
|---|---|
| Author | Department of Earth Sciences, Faculty of Science, Okayama University | |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2017-12-27 |
| Volume | volume24 |
| Issue | issue1 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2017 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| JaLCDOI | 10.18926/ESR/56190 |
|---|---|
| Title Alternative | Interdisciplinary class for high school students on the climate environment around Japan and "seasonal feeling" expressed in the school songs with attention to the asymmetric seasonal march from autumn to the next spring |
| FullText URL | esr_024_1_005_018.pdf |
| Author | Kato, Kuranoshin| Kato, Haruko| Miyake, Shoji| Mori, Taizo| |
| Abstract | This study is a part of the activity to develop an interdisciplinary lesson plan for high school students on the climate environment around Japan and the "seasonal feeling". This time, we focused our attention to the asymmetric seasonal march from autumn to the next spring as proposed by Kato et al. (2013). Comparison of the climate between early winter and early spring was made in the class not only on that around the Japan but also on the relation to the larger-scale systems such as the Siberian air mass, including the brief data analysis. The students also compared the detailed "seasonal feeling" between the two seasons expressed in the school songs and the Japanese classic poems called "Wa-Ka". This paper reports the contents and results of this joint activity at the two high schools. |
| Keywords | Interdisciplinary activity on climate and cultural understanding education Climate environment around Japan Seasonal cycle and "seasonal feeling" Asymmetric seasonal march from autumn to the next spring ESD |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2017-12-27 |
| Volume | volume24 |
| Issue | issue1 |
| Start Page | 5 |
| End Page | 18 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2017 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| JaLCDOI | 10.18926/ESR/56189 |
|---|---|
| Title Alternative | Rounded pebble of metamorphosed iron-formations from conglomerate of the Miocene deposits in Yatakayama, Kibi Plateau, Okayama Prefecture |
| FullText URL | esr_024_1_001_004.pdf |
| Author | Suzuki, Shigeyuki| 小網, 晴男| 臼井, まゆみ| |
| Abstract | The Kibi Plateau was a part of the Eurasian Continent and separated by the event of opening of Japan Sea. The rounded pebble which is considered to be continental origin was discovered. The pebble is siliceous and attracts magnets. Prepared thin-sections were observed under microscope. Selected minerals were analyzed by EPMA. The rock is composed of recrystallized quartz, magnetite, riebeckite, stilpnomelane and associated with very tiny minerals with very high relief and interference colors. The assemblage suggests that there is a possibility that the rock is a metamorphic rock of iron-formations and derived from continent. |
| Keywords | Continental origin Miocene conglomerate rounded pebble iron-formations Kibi Plateau |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2017-12-27 |
| Volume | volume24 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 4 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2017 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| FullText URL | esr_024_1_titlepage.pdf |
|---|---|
| Author | Department of Earth Sciences, Faculty of Science, Okayama University | |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2017-12-27 |
| Volume | volume24 |
| Issue | issue1 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2017 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| FullText URL | esr_024_1_contents_eng.pdf |
|---|---|
| Author | Department of Earth Sciences, Faculty of Science, Okayama University | |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2017-12-27 |
| Volume | volume24 |
| Issue | issue1 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2017 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| FullText URL | esr_023_1_contents.pdf |
|---|---|
| Author | Department of Earth Sciences, Faculty of Science, Okayama University | |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2016-12-27 |
| Volume | volume23 |
| Issue | issue1 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2016 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| FullText URL | esr_023_1_colophon.pdf |
|---|---|
| Author | Department of Earth Sciences, Faculty of Science, Okayama University | |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2016-12-27 |
| Volume | volume23 |
| Issue | issue1 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2016 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| JaLCDOI | 10.18926/ESR/55324 |
|---|---|
| Title Alternative | A case study on the cyclone activity around Europe from winter to spring of 2000 |
| FullText URL | esr_023_1_033_042.pdf |
| Author | Kuwana, Yusuke| Kato, Kuranoshin| Takigawa, Yumi| Kojima, Yumi| Otani, Kazuo| |
| Abstract | Although the extratropical cyclone is one of the basic systems that characterize the weather and climate in mid-latitude regions with the large meridional temperature gradient, its activity and characteristics would be greatly influenced by the seasonal transition and regional differences of the mean atmospheric fields such as between Europe and East Asia. Furthermore, detailed knowledge of the daily cyclone activity would help to understand deeply the differences of regional climatology including seasonal cycles among various areas. In such interest, the present study performed a case study on the cyclone activity around Europe from winter to spring of 2000. In winter, intraseasonal variation of the Icelandic Low was dominant. In the stage when such intraseasonal-scale Icelandic Low approached to the northwestern Europe, the several lows passed eastward with a few days interval around the intraseasonal-scale low pressure area or its southern edge where the baroclinicity was relatively strong. It is also noted that their center pressure was rather low (below 980hPa). After April, when the seasonal mean Icelandic low had disappeared, different types of the intra-seasonal-scale cyclones and anticyclones were dominantly observed. In the lower SLP stage of the intraseasonal variation in Europe, the low to the southwest of England in the middle of April was of the equivalent barotropic structure and persisted for about ten days. On the other hand, high pressure area extending from England to the northern coast of Germany also persisted for about half month. The southern half of that high area was also of equivalent barotropic structure with warmer air there. |
| Keywords | cyclone activity around Europe comparative climatology between Europe and East Asia seasonal cycle dynamic climatology |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2016-12-27 |
| Volume | volume23 |
| Issue | issue1 |
| Start Page | 33 |
| End Page | 42 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2016 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| JaLCDOI | 10.18926/ESR/55323 |
|---|---|
| Title Alternative | Synoptic climatological analyses on the rainfall features in southern Kyushu and the atmospheric fields around April |
| FullText URL | esr_023_1_017_032.pdf |
| Author | Kato, Kuranoshin| Morizuka, Nozomi| Matsumoto, (Kengo| Otani, Kazuo| |
| Abstract | Around April, total precipitation in southern Kyushu already attains rather large value due to the increase in contribution of the “heavy rainfall days” (with daily precipitation more the 50 mm/day, referred to as HRD). The present study examined the rainfall features and atmospheric conditions on the HRDs at Kagoshima in southern Kyushu, based on the operational observation data from 1990 to 2009. The HRDs there in April appeared mainly associated with the extratropical cyclone passage, together with tentative appearance of the stationary front. The mean daily precipitation on the HRDs was 82 mm and contribution of the intense rainfall more than 10 mm/h attained up to 38 mm, which accounted for 46 % of the daily total precipitation. In April, the high specific humidity area in the time mean field was still located far to the south of the Japan Islands and the stratification around the Japan Islands was very stable for deep moist convection. However, the zone with rather strong seasonal mean baroclinicity extended to rather southern area near 20°N. This would provide a favorable condition for the long-distance moistur |
| Keywords | heavy rainfall around April in southern Kyushu rainfall associated with extratropical cyclones around the Japan Islands seasonal cycle around Japan |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2016-12-27 |
| Volume | volume23 |
| Issue | issue1 |
| Start Page | 17 |
| End Page | 32 |
| ISSN | 1340-7414 |
| language | 日本語 |
| Copyright Holders | © 2016 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
| JaLCDOI | 10.18926/ESR/55322 |
|---|---|
| FullText URL | esr_023_1_009_015.pdf |
| Author | Takesue, Norito| Suzuki, Shigeyuki| |
| Abstract | Analyzing of sedimentary facies and structure together with regional field mapping were studied in the mélange unit, upper Cretaceous Shimanto Belt, Wakayama Pref., SW Japan. The field survey was concentrated in the coast of Shiofuki-iwa, Miyama Complex, Hidakagawa Belt where soft deformations penetrate throughout the mélange unit. Brittle to ductile faults associated as later deformations are excluded. The mélange unit is subdivided into the Y-shear zone (YSZ) and P-foliation zone (PFZ). The YSZ is composed of thick lenticular sandstone (trends subparallel to the direction of the mélange), intense shear band (thin layer with concentrated prelithification shear deformation) and mudstone dominant mélange. The PFZ is composed of mudstone dominant mélange (associated with foliations which slightly oblique to the direction of the YSZ) and lenticular sandstone (slightly oblique to the direction of the YSZ). The intense shear band separates the YSZ and PFZ. Preserved radiolarian fossils free from deformation in the intense shear band is the evidence of the prelithification shear deformation in the mélange. A remarkable-fact is that the structures of mélange unit are formed under sinistral sense of shear. The mélange unit in the Shiofuki-iwa is ascribed to be formed by sinistral sense of shear during sediments were prelithified. |
| Keywords | mélange Shimanto Belt Y-shear zone P-foliation zone intense shear band prelithification structures |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2016-12-27 |
| Volume | volume23 |
| Issue | issue1 |
| Start Page | 9 |
| End Page | 15 |
| ISSN | 1340-7414 |
| language | 英語 |
| Copyright Holders | © 2016 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| File Version | publisher |
