start-ver=1.4
cd-journal=joma
no-vol=29
cd-vols=
no-issue=1
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20230331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=裏表紙・目次
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=
END

start-ver=1.4
cd-journal=joma
no-vol=29
cd-vols=
no-issue=1
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20230331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=岡山大学地球科学研究報告 投稿規定（約款）
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=
END

start-ver=1.4
cd-journal=joma
no-vol=29
cd-vols=
no-issue=1
article-no=
start-page=65
end-page=66
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20230331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=ERRATA: FDM simulation of long-period ground motions around Oita Prefecture, Japan, using a land-ocean unified 3D structure model
kn-title=訂正：地形を考慮した陸海統合3次元地震波速度構造モデルを用いた大分県周辺の長周期地震動シミュレーション
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=

en-aut-name=OKUNAKATatsuya
en-aut-sei=OKUNAKA
en-aut-mei=Tatsuya
kn-aut-name=奥仲達也
kn-aut-sei=奥仲
kn-aut-mei=達也
aut-affil-num=1
ORCID=

en-aut-name=KOMATSUMasanao
en-aut-sei=KOMATSU
en-aut-mei=Masanao
kn-aut-name=小松正直
kn-aut-sei=小松
kn-aut-mei=正直
aut-affil-num=2
ORCID=

en-aut-name=TAKENAKAHiroshi
en-aut-sei=TAKENAKA
en-aut-mei=Hiroshi
kn-aut-name=竹中博士
kn-aut-sei=竹中
kn-aut-mei=博士
aut-affil-num=3
ORCID=

en-aut-name=YOSHIMIMasayuki
en-aut-sei=YOSHIMI
en-aut-mei=Masayuki
kn-aut-name=吉見雅行
kn-aut-sei=吉見
kn-aut-mei=雅行
aut-affil-num=4
ORCID=

en-aut-name=NAKAMURATakeshi
en-aut-sei=NAKAMURA
en-aut-mei=Takeshi
kn-aut-name=中村武史
kn-aut-sei=中村
kn-aut-mei=武史
aut-affil-num=5
ORCID=

en-aut-name=OKAMOTOTaro
en-aut-sei=OKAMOTO
en-aut-mei=Taro
kn-aut-name=岡元太郎
kn-aut-sei=岡元
kn-aut-mei=太郎
aut-affil-num=6
ORCID=

affil-num=1
en-affil=Formerly Department of Earth Sciences, Okayama University
kn-affil=元・岡山大学理学部地球科学科

affil-num=2
en-affil=Department of Earth Sciences, Okayama University
kn-affil=岡山大学大学院自然科学研究科

affil-num=3
en-affil=Department of Earth Sciences, Okayama University
kn-affil=岡山大学学術研究院自然科学学域

affil-num=4
en-affil=Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology
kn-affil=国立研究開発法人産業技術総合研究所 活断層・火山研究部門

affil-num=5
en-affil=Formerly Japan Agency for Marine-Earth Science and Technology
kn-affil=元・国立研究開発法人海洋研究開発機構

affil-num=6
en-affil=Department of Earth and Planetary Sciences, School of Science, Tokyo Institute of Technology
kn-affil=東京工業大学理学院地球惑星科学系
END

start-ver=1.4
cd-journal=joma
no-vol=29
cd-vols=
no-issue=1
article-no=
start-page=49
end-page=63
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20230331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Onset time and location of the main rupture of the 2018 Hokkaido Eastern Iburi, Japan, earthquake
kn-title=2018 年北海道胆振東部地震の初期の破壊過程
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The rupture process at the beginning stage of the 2018 Hokkaido Eastern Iburi, Japan, earthquake (MJ 6.7) is investigated by analyzing P-wave records from local strong-motion stations. The records show about 3 s of small amplitude arrival (so-called "initial rupture phase") followed by the onset of the main energy release ("main rupture phase"). In this paper we address the issue: where the seismic energy release corresponding to the main rupture phase started at the primary stage of the main rupture, by locating the main rupture onset position. For this aim we applied the 2D and the 3D search methods to estimate the relative location of the onset of the main rupture with respect to the hypocenter, and the time difference between them. The 2D method assumes a plausible initial fault plane and locates the main rupture onset position on the initial fault plane, while the 3D method does not require such assumed fault planes. In the 2D method we employed each of the nodal planes of the first-motion focal mechanism as the initial rupture plane. The 3D method was able to give a better solution than the 2D one. It suggests that the main rupture initiation point might not be on the same fault plane as the hypocenter is. The solution shows that the main rupture onset point is 5.8 km southward and 2.5 km upward from the hypocenter, with the rupture time of 3.3 s from the origin time. It is consistent with the previous studies on the relationship between the magnitude and the initial rupture duration.
en-copyright=
kn-copyright=

en-aut-name=KOWARIHirofumi
en-aut-sei=KOWARI
en-aut-mei=Hirofumi
kn-aut-name=小割啓史
kn-aut-sei=小割
kn-aut-mei=啓史
aut-affil-num=1
ORCID=

en-aut-name=KOMATSUMasanao
en-aut-sei=KOMATSU
en-aut-mei=Masanao
kn-aut-name=小松正直
kn-aut-sei=小松
kn-aut-mei=正直
aut-affil-num=2
ORCID=

en-aut-name=TAKENAKAHiroshi
en-aut-sei=TAKENAKA
en-aut-mei=Hiroshi
kn-aut-name=竹中博士
kn-aut-sei=竹中
kn-aut-mei=博士
aut-affil-num=3
ORCID=

affil-num=1
en-affil=Department of Earth Sciences, Okayama University
kn-affil=岡山大学大学院自然科学研究科

affil-num=2
en-affil=Department of Earth Sciences, Okayama University
kn-affil=岡山大学大学院自然科学研究科

affil-num=3
en-affil=Department of Earth Sciences, Okayama University
kn-affil=岡山大学学術研究院自然科学学域
en-keyword=2018 Hokkaido Eastern Iburi earthquake
kn-keyword=2018 Hokkaido Eastern Iburi earthquake
en-keyword=fault plane
kn-keyword=fault plane
en-keyword=initial rupture
kn-keyword=initial rupture
en-keyword=strong motion
kn-keyword=strong motion
END

start-ver=1.4
cd-journal=joma
no-vol=29
cd-vols=
no-issue=1
article-no=
start-page=29
end-page=48
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20230331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Summary of our activities toward development of the ESD interdisciplinary study plans on climate and cultural understanding education with attention to the seasonal cycle and “seasonal feeling” around Japan and Europe
kn-title=気候・文化理解教育の学際的ESD学習プラン開発へ向けた取り組み（日本とヨーロッパの季節サイクルや季節感に注目して）
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=We have continued the interdisciplinary integration of the knowledge on climate and music and have developed the crosscutting study plans on the climate and cultural understanding education. A part of these results had been summarized in a Japanese book titled “Climate and music (Cultural understanding and ESD spreading from the “Doors of Song”)” (Kato and Kato 2019), building mainly our papers written in Japanese. This article will re-integrate our above study results, mainly for the climate and songs/traditional seasonal events around Germany, Northern Europe and Japan, with special attention to (A) asymmetric seasonal progression from autumn to next spring around Japan, (B) winter climate around Germany in association with the seasonal feeling on the traditional events “Fasnacht” for driving winter away and (C) climate around Northern Europe in association with the seasonal feeling on the summer solstice festival “Juhannus” with comparison to the summer climate around Japan.
en-copyright=
kn-copyright=

en-aut-name=KATOKuranoshin
en-aut-sei=KATO
en-aut-mei=Kuranoshin
kn-aut-name=加藤内藏進
kn-aut-sei=加藤
kn-aut-mei=内藏進
aut-affil-num=1
ORCID=

en-aut-name=KATOHaruko
en-aut-sei=KATO
en-aut-mei=Haruko
kn-aut-name=加藤晴子
kn-aut-sei=加藤
kn-aut-mei=晴子
aut-affil-num=2
ORCID=

en-aut-name=AKAGIRikako
en-aut-sei=AKAGI
en-aut-mei=Rikako
kn-aut-name=赤木里香子
kn-aut-sei=赤木
kn-aut-mei=里香子
aut-affil-num=3
ORCID=

affil-num=1
en-affil=Faculty of Education, Okayama University
kn-affil=岡山大学学術研究院教育学域

affil-num=2
en-affil=Faculty of Education, Gufu Shotoku Gakuen University (Former Affiliation)
kn-affil=元 岐阜聖徳学園大学教育学部

affil-num=3
en-affil=Faculty of Education, Okayama University
kn-affil=岡山大学学術研究院教育学域
en-keyword=climate and music
kn-keyword=climate and music
en-keyword=interdisciplinary climate and cultural understanding education
kn-keyword=interdisciplinary climate and cultural understanding education
en-keyword=seasonal cycle around Japan and Europe
kn-keyword=seasonal cycle around Japan and Europe
en-keyword=seasonal feeling
kn-keyword=seasonal feeling
en-keyword=ESD
kn-keyword=ESD
en-keyword=comparative climatology
kn-keyword=comparative climatology
END

start-ver=1.4
cd-journal=joma
no-vol=29
cd-vols=
no-issue=1
article-no=
start-page=1
end-page=27
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20230331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=Geology of the Paleogene to Neogene successions and gentle upwarping of the Kibi Plateau Surface, surrounding area of Kibichuou Town, Okayama Prefecture, Southwest Japan
kn-title=岡山県吉備中央町賀陽周辺の古第三系〜新第三系の地質と吉備高原面のゆるやかな曲隆
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The Paleogene to Neogene successions which are composed of the Paleogene Kayo Formation, the late Oligocene to earliest Miocene Yagane Formation and the middle Miocene Ukan Formation are sporadically distributed in the Kibi Plateau region, surrounding area of Kibichuou Town, Okayama Prefecture, Southwest Japan. The gravel of the Kayo Formation occupied paleo-valley of Pre-Paleogene basement. The Yagane and Ukan formations unconformably overlay Pre-Paleogene rocks and occupy the gentle valley on the Kibi Surface as valley fill deposits.<br>
The fluvial of the Kayo Formation is mainly composed of conglomerate with minor amount of sandstone and mudstone. The fluvial Yagane Formation is mainly composed of conglomerate and associated with sandstone, mudstone and coal beds. The marine Ukan Formation is subdivided into 3 members, the Yamagata Muddy sandstone Member (YMM), the Shimoyokomi Sandstone Member (SSM) and the Tsuneyama Mudstone Member (TMM) in ascending order. The YMM is characterized by the bio-disturbed very poorly sorted muddy sandstone with frequent burrows, which indicate tidal flat deposits. The SSM is mainly composed of parallel bedded well-sorted sandstone with occasional burrows, which suggest near shore deposits. The TMM is composed of homogeneous clay rich mudstone, which implies off shore deposits.<br>
The boundary between the SSM and TMM (the contact of the sandstone and mudstone) is distinctive and correlative throughout the study area. The boundary is considered to be formed under similar water depth. The variations of the boundary height indicate a later ground movement. From the north to the south in about 25km distance, the height of the boundary changes 260m (in Ukan), 300m (in Takeshou), 360m (in Kibikogentoshi) and 260m (in Nichiouji). It indicates that a very gentle upwarping of the Kibi Plateau Surface was formed after the deposition of the Miocene.
en-copyright=
kn-copyright=

en-aut-name=TANAKAHajime
en-aut-sei=TANAKA
en-aut-mei=Hajime
kn-aut-name=田中元
kn-aut-sei=田中
kn-aut-mei=元
aut-affil-num=1
ORCID=

en-aut-name=SUZUKIShigeyuki
en-aut-sei=SUZUKI
en-aut-mei=Shigeyuki
kn-aut-name=鈴木茂之
kn-aut-sei=鈴木
kn-aut-mei=茂之
aut-affil-num=2
ORCID=

affil-num=1
en-affil=Seibu Engineering Consultants Co., Ltd.
kn-affil=西部技術コンサルタント株式会社

affil-num=2
en-affil=Department of Earth Sciences, Okayama University
kn-affil=岡山大学理学部地球科学科
en-keyword=Kibi Plateau Surface
kn-keyword=Kibi Plateau Surface
en-keyword=Upwarping
kn-keyword=Upwarping
en-keyword=Miocene
kn-keyword=Miocene
en-keyword=Ukan Formation
kn-keyword=Ukan Formation
END

start-ver=1.4
cd-journal=joma
no-vol=29
cd-vols=
no-issue=1
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20230331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Title Page
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=
END

start-ver=1.4
cd-journal=joma
no-vol=29
cd-vols=
no-issue=1
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20230331
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=表紙・英文目次
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=
END