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Hyodo, Masayuki; Nakagawa, Takeshi; Matsushita, Hayato; Kitaba, Ikuko; Yamada, Keitaro; Tanabe, Shota; Bradák, Balázs; Miki, Masako; McLean, Danielle; Staff, Richard A; Smith, Victoria C; Albert, Paul G; Bronk Ramsey, Christopher; Yamasaki, Akiteru; Kitagawa, Junko; Suigetsu 2014 Project (2022): Depth, IntCal20 age, declination, inclination, VGP latitude, VGP longitude, magnetic susceptibility, and relative paleointensity of core SG14 from Lake Suigetsu, Central Japan [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.945035

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Abstract:
The varved sediment of Lake Suigetsu is one of the most precisely age-controlled sedimentary archives in the world, with annual layers (varves) counted by dual methods as well as > 800 radiocarbon dates. The dataset has been used as a central component of the IntCal20 radiocarbon calibration model. In addition, the sedimentation rate around 40 kyr BP is quite high (90‒100 cm/kyr). From the core SG14 of the sediment, we have obtained a high (21-yr) resolution paleomagnetic record from 45 to 35 IntCal20 kyr BP. The record includes the Laschamp Excursion and a new post-Laschamp (Suigetsu) excursion. The mid-ages and varve-counted durations are 42,050 ± 120 IntCal20 yr BP and 790 yr for the Laschamp Excursion, and 38,830 ± 140 IntCal20 yr BP and 550 yr for the post-Laschamp (Suigetsu) excursion, respectively. These excursions coincide with the double minima of paleointensity and maxima of Δ14C.
Keyword(s):
IntCal20 age; Lake Suigetsu; Laschamp Excursion; paleointensity; paleomagnetic direction
Supplement to:
Hyodo, Masayuki; Nakagawa, Takeshi; Matsushita, Hayato; Kitaba, Ikuko; Yamada, Keitaro; Tanabe, Shota; Bradák, Balázs; Miki, Masako; McLean, Danielle; Staff, Richard A; Smith, Victoria C; Albert, Paul G; Bronk Ramsey, Christopher; Yamasaki, Akiteru; Kitagawa, Junko; Suigetsu 2014 Project (2022): Intermittent non-axial dipolar-field dominance of twin Laschamp excursions. Communications Earth & Environment, 3(1), https://doi.org/10.1038/s43247-022-00401-0
Funding:
Japan Society for the Promotion of Science (JSPS), grant/award no. 15H02143
Japan Society for the Promotion of Science (JSPS), grant/award no. 16J10887
Japan Society for the Promotion of Science (JSPS), grant/award no. 18H03609
Japan Society for the Promotion of Science (JSPS), grant/award no. 18K03804
Coverage:
Latitude: 35.585475 * Longitude: 135.886058
Date/Time Start: 2014-06-03T00:00:00 * Date/Time End: 2021-12-09T00:00:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
2 datasets

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Datasets listed in this bundled publication

  1. Hyodo, M; Nakagawa, T; Matsushita, H et al. (2022): Relative paleointensity of sediment core SG14 from Lake Suigetsu, Central Japan. https://doi.org/10.1594/PANGAEA.945024
  2. Hyodo, M; Nakagawa, T; Matsushita, H et al. (2022): Paleomagnetic direction of sediment core SG14 from Lake Suigetsu, Central Japan. https://doi.org/10.1594/PANGAEA.945034