Akira Hayashida
Biographic Data
| ID | 1542600 |
|---|---|
| NAME | Akira Hayashida |
| GIVEN NAMES | Akira |
| FAMILY NAME | Hayashida |
| SIGNATURE | HAYASHIDA A |
| AFFILIATIONS | Doshisha University |
| ORCID | 0000-0003-4492-5622 |
| VERIFIED | Yes |
| TOTAL WORKS | 10 |
| TOTAL CITATIONS | 26 |
| AUTHOR COUNT | 10 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1995 |
| LATEST PUBLICATION YEAR | 2023 |
| H-INDEX | 3 |
Beppu Bay, Japan, as a candidate Global boundary Stratotype Section and Point for the Anthropocene series
For assessment of the potential of the Beppu Bay sediments as a Global boundary Stratotype Section and Point (GSSP) candidate for the Anthropocene, we have integrated datasets of 99 proxies. The datasets for the sequences date back 100 years for most proxy records and 1300 years for several records. The cumulative number of occurrences of the anthropogenic fingerprint reveal unprecedented increases above the base of the 1953 flood layer at 64.6 c…
Examination of the Relationship between the Ukinuno and Sakate Tephras from Sambe Volcano, Southwest Japan
中国地方および近畿地方で見いだされている阪手テフラは,三瓶火山より噴出した三瓶浮布テフラ(SUk)に対比されている。SUkテフラは,三瓶山近傍の露頭観察より,下位から浮布降下軽石堆積物(Uk-pfa),緑ヶ丘火砕流堆積物(Md-fl),浮布降下火山灰堆積物(Uk-fa)に分けられている。これまでの研究では,阪手テフラはMd-flに対比されている。Md-fl(阪手)試料に含まれる角閃石の屈折率は,Uk-pfa試料に含まれるものと似通っていた。それに対して,Md-fl(阪手)試料に含まれる火山ガラスの屈折率は,Uk-pfa試料に含まれるものより低かった。またUk-faの岩石学的特性から判断すると,Uk-faとMd-flは一つの同じテフラとみなすことが可能だった。Uk-pfaに含まれる火山ガラスのSiO2濃度は,ガラス屈折率からの予測に反して,Md-flのものよりも高かった。しかしながら,Uk-pfaに含まれる火山ガラスのFeO濃度は,Md-flのものに比べて明らかに高かった。このことからガラ…
Kantis
Response of vegetation in central Japan to precession during the last 147,000 years
Paleoclimate reconstruction for the Holocene and the last glacial period based on environmental magnetic record from Lake Biwa, central Japan
Magnetic properties of aeolian deposits in Paleolithic sites in Korea and correlation with the Chinese loess-paleosol sequence
Millennial-scale vegetation changes during the last 40,000 yr based on a pollen record from Lake Biwa, Japan
A high-resolution pollen record covering the last 40,000 yr (BIW95-4) from Lake Biwa, western Japan, shows regional vegetation responses to millennial-scale climate changes. From 40 to 30 ka, Cryptomeria japonica was dominant around the lake among pinaceous conifers and deciduous broad-leaved trees. During this period, fluctuations of C. japonica are correlated with Dansgaard–Oeschger (D–O) cycles recognized from the anhysteretic remanent magneti…
Environmental magnetism of brackish-water sediments from Lake Tougou-ike on the Japan Sea coast
Correlation of widespread tephra deposits based on paleomagnetic directions
AMS 14 C Dating of Varved Sediments from Lake Suigetsu, Central Japan and Atmospheric 14 C Change During the Late Pleistocene
We made accelerator mass spectrometry (AMS) 14 C measurements on terrestrial macrofossils from the Late Pleistocene/Holocene of the annually laminated sediments of Lake Suigetsu (central Japan). The AMS 14 C dates of terrestrial macrofossils showed agreement between varve counting years and calibrated ages (tree rings and U/Th on coral) in the interval of 10.5 and ca. 11.5 ka cal bp. Beyond 11.5 ka cal bp, the age difference between 14 C and varv…
Kantis
AMS 14 C Dating of Varved Sediments from Lake Suigetsu, Central Japan and Atmospheric 14 C Change During the Late Pleistocene
We made accelerator mass spectrometry (AMS) 14 C measurements on terrestrial macrofossils from the Late Pleistocene/Holocene of the annually laminated sediments of Lake Suigetsu (central Japan). The AMS 14 C dates of terrestrial macrofossils showed agreement between varve counting years and calibrated ages (tree rings and U/Th on coral) in the interval of 10.5 and ca. 11.5 ka cal bp. Beyond 11.5 ka cal bp, the age difference between 14 C and varv…
Beppu Bay, Japan, as a candidate Global boundary Stratotype Section and Point for the Anthropocene series
For assessment of the potential of the Beppu Bay sediments as a Global boundary Stratotype Section and Point (GSSP) candidate for the Anthropocene, we have integrated datasets of 99 proxies. The datasets for the sequences date back 100 years for most proxy records and 1300 years for several records. The cumulative number of occurrences of the anthropogenic fingerprint reveal unprecedented increases above the base of the 1953 flood layer at 64.6 c…
AMS 14 C Dating of Varved Sediments from Lake Suigetsu, Central Japan and Atmospheric 14 C Change During the Late Pleistocene
We made accelerator mass spectrometry (AMS) 14 C measurements on terrestrial macrofossils from the Late Pleistocene/Holocene of the annually laminated sediments of Lake Suigetsu (central Japan). The AMS 14 C dates of terrestrial macrofossils showed agreement between varve counting years and calibrated ages (tree rings and U/Th on coral) in the interval of 10.5 and ca. 11.5 ka cal bp. Beyond 11.5 ka cal bp, the age difference between 14 C and varv…
Correlation of widespread tephra deposits based on paleomagnetic directions
Environmental magnetism of brackish-water sediments from Lake Tougou-ike on the Japan Sea coast
Millennial-scale vegetation changes during the last 40,000 yr based on a pollen record from Lake Biwa, Japan
A high-resolution pollen record covering the last 40,000 yr (BIW95-4) from Lake Biwa, western Japan, shows regional vegetation responses to millennial-scale climate changes. From 40 to 30 ka, Cryptomeria japonica was dominant around the lake among pinaceous conifers and deciduous broad-leaved trees. During this period, fluctuations of C. japonica are correlated with Dansgaard–Oeschger (D–O) cycles recognized from the anhysteretic remanent magneti…
Paleoclimate reconstruction for the Holocene and the last glacial period based on environmental magnetic record from Lake Biwa, central Japan
Magnetic properties of aeolian deposits in Paleolithic sites in Korea and correlation with the Chinese loess-paleosol sequence
Response of vegetation in central Japan to precession during the last 147,000 years
Kantis
Examination of the Relationship between the Ukinuno and Sakate Tephras from Sambe Volcano, Southwest Japan
中国地方および近畿地方で見いだされている阪手テフラは,三瓶火山より噴出した三瓶浮布テフラ(SUk)に対比されている。SUkテフラは,三瓶山近傍の露頭観察より,下位から浮布降下軽石堆積物(Uk-pfa),緑ヶ丘火砕流堆積物(Md-fl),浮布降下火山灰堆積物(Uk-fa)に分けられている。これまでの研究では,阪手テフラはMd-flに対比されている。Md-fl(阪手)試料に含まれる角閃石の屈折率は,Uk-pfa試料に含まれるものと似通っていた。それに対して,Md-fl(阪手)試料に含まれる火山ガラスの屈折率は,Uk-pfa試料に含まれるものより低かった。またUk-faの岩石学的特性から判断すると,Uk-faとMd-flは一つの同じテフラとみなすことが可能だった。Uk-pfaに含まれる火山ガラスのSiO2濃度は,ガラス屈折率からの予測に反して,Md-flのものよりも高かった。しかしながら,Uk-pfaに含まれる火山ガラスのFeO濃度は,Md-flのものに比べて明らかに高かった。このことからガラ…
Beppu Bay, Japan, as a candidate Global boundary Stratotype Section and Point for the Anthropocene series
For assessment of the potential of the Beppu Bay sediments as a Global boundary Stratotype Section and Point (GSSP) candidate for the Anthropocene, we have integrated datasets of 99 proxies. The datasets for the sequences date back 100 years for most proxy records and 1300 years for several records. The cumulative number of occurrences of the anthropogenic fingerprint reveal unprecedented increases above the base of the 1953 flood layer at 64.6 c…
Geology and Paleoclimatology Research (9 works) · Geology (8 works) · Paleontology (7 works) · Geography (6 works) · Biology (4 works) · Geomagnetism and Paleomagnetism Studies (4 works) · Physical geography (4 works) · Pleistocene-Era Hominins and Archaeology (4 works) · Ecology (3 works) · Geochemistry (3 works)