Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Hyeon-seon Ahn"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract Magnetic susceptibility enhancement (kE) is useful for reconstructing terrestrial paleohydroclimate variabilities. However, kE and its driving process(es) in the Korean Peninsula remain uninvestigated. Therefore, this study investigated two
Externí odkaz:
https://doaj.org/article/c384b75ffd424f39903026f6190d3dad
Publikováno v:
Earth, Planets and Space, Vol 76, Iss 1, Pp 1-29 (2024)
Abstract Despite being essential in determining absolute paleomagnetic field intensity (API) with high fidelity over Earth science research topics, API determination still suffers little quantitative success. This is due to common nonideal magnetic b
Externí odkaz:
https://doaj.org/article/7fb85d546ab24b33a8a1b27a8d67904e
Autor:
Mirosław Masojć, Ju Yong Kim, Hyeon-Seon Ahn, Jin Cheul Kim, Youn Soo Lee, Young Kwan Sohn, Grzegorz Michalec, Ahmed Nassr
Publikováno v:
Quaternary Science Advances, Vol 14, Iss , Pp 100193- (2024)
Since the Middle Pleistocene, the Sahara region has undergone strong environmental changes resulting from climate changes. Dry periods, constituting an ecological barrier to human presence, alternated with wet periods when the Sahara area was covered
Externí odkaz:
https://doaj.org/article/02b9cc01e24d4f9a99b2199c5216977e
Autor:
Yutaka Yoshimura, Osamu Ishizuka, Toshitsugu Yamazaki, Hyeon‐Seon Ahn, Tesfaye Kidane, Yuhji Yamamoto, Shun Sekimoto, Takashi Sano, Yo‐ichiro Otofuji
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 8, Pp n/a-n/a (2023)
Abstract The Ethiopia‐Yemen flood basalts are spatially zoned with progressively lower TiO2 lavas from near the Afar depression toward the margins. The timing and rate of emplacement of low TiO2 (LT) lavas are poorly known compared with the ultra
Externí odkaz:
https://doaj.org/article/4e8da94038ba404e8f4be77df69ed1e5
Autor:
Hyeon-Seon Ahn, Yuhji Yamamoto
Publikováno v:
Earth, Planets and Space, Vol 71, Iss 1, Pp 1-20 (2019)
Abstract Finding the statistical intensity signatures of the Earth’s magnetic field over geologic time has helped understanding of the evolution of the Earth’s interior and its interactions with other integral parts of Earth systems. However, thi
Externí odkaz:
https://doaj.org/article/7771efbc4a11484ebe19c95343d5d941
Publikováno v:
Frontiers in Earth Science, Vol 9 (2021)
The sensitivity of magnetic properties, which characterize the mineralogy, concentration, and grain size distribution of magnetic minerals, to environmental processes may provide useful information on paleoenvironmental changes in estuarine environme
Externí odkaz:
https://doaj.org/article/45ea617660a14c2c9a1f073d0797a024
Autor:
Yutaka Yoshimura, Toshitsugu Yamazaki, Yuhji Yamamoto, Hyeon‐Seon Ahn, Tesfaye Kidane, Yo‐ichiro Otofuji
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 21, Iss 12, Pp n/a-n/a (2020)
Abstract We conducted a geomagnetic paleointensity study of lava flows at ∼30 Ma distributed in the Lima‐Limo section of the Afro‐Arabian Large Igneous Province. The Tsunakawa‐Shaw method, which has built‐in low‐temperature demagnetizatio
Externí odkaz:
https://doaj.org/article/7b2ba7a054014804baae7c1605c3c7da
Publikováno v:
Earth, Planets and Space, Vol 70, Iss 1, Pp 1-24 (2018)
Abstract Paleomagnetic and rock magnetic investigations were performed on a 64-cm-thick section of nonmarine unconsolidated muddy sediment from the Gosan Formation on Jeju Island, Korea. This sediment was recently dated to have been deposited between
Externí odkaz:
https://doaj.org/article/853ba9054b9b4ab080ca616e92e1e8ce
Autor:
Sompong Vongpunsawad, Chulwoo Rhee, Pornjarim Nilyanimit, Nimesh Poudyal, Suchada Jiamsiri, Hyeon Seon Ahn, Jinae Lee, Hyeong-Won Seo, Worrawan Klinsupa, Sunju Park, Nakorn Premsri, Chawetsan Namwat, Patummal Silaporn, Jean-Louis Excler, Deok-Ryun Kim, Lauri E. Markowitz, Elizabeth R. Unger, Supachai Rerks-Ngarm, Julia Lynch, Yong Poovorawan
Publikováno v:
IJID Regions. 7:110-115
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9326314f7191fdfbbb3e305e52303ea
https://doi.org/10.1016/j.ijregi.2023.02.011
https://doi.org/10.1016/j.ijregi.2023.02.011
In the Jeokjung-Chogye Basin, southeastern Korean Peninsula, presumed to be a Quaternary meteorite impact crater, an azimuthally non-oriented drill sediment core (called 20HCL04; up to 66.0 m depth) was retrieved. We conducted paleomagnetic and miner
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08ffd8748176757058cc3d2c63fbeacb
https://doi.org/10.21203/rs.3.rs-2672521/v1
https://doi.org/10.21203/rs.3.rs-2672521/v1
