Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series

Michinobu Kuwae; Bruce P. Finney; Zhiyuan Shi; Aya Sakaguchi; Narumi Tsugeki; Takayuki Omori; Tetsuro Agusa; Yoshiaki Suzuki; Yusuke Yokoyama; Hirofumi Hinata; Yoshio Hatada; Jun Inoue; Kazumi Matsuoka; Misaki Shimada; Hikaru Takahara; Shin Takahashi; Daisuke Ueno; Atsuko Amano; Jun Tsutsumi; Masanobu Yamamoto; Keiji Takemura; Keitaro Yamada; Ken Ikehara; Tsuyoshi Haraguchi; Stephen Tims; Michaela Froehlich; Leslie Keith Fifield; Takahiro Aze; Kimikazu Sasa; Tsutomu Takahashi; Masumi Matsumura; Yukinori Tani; Peter R. Leavitt; Hideyuki Doi; Tomohisa Irino; Kazuyoshi Moriya; Akira Hayashida; Kotaro Hirose; Hidekazu Suzuki; Yoshiki Saito

doi:10.1177/20530196221135077

Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series

Michinobu Kuwae^*, Bruce P. Finney, Zhiyuan Shi, Aya Sakaguchi, Narumi Tsugeki, Takayuki Omori, Tetsuro Agusa, Yoshiaki Suzuki, Yusuke Yokoyama, Hirofumi Hinata, Yoshio Hatada, Jun Inoue, Kazumi Matsuoka, Misaki Shimada, Hikaru Takahara, Shin Takahashi, Daisuke Ueno, Atsuko Amano, Jun Tsutsumi, Masanobu YamamotoKeiji Takemura, Keitaro Yamada, Ken Ikehara, Tsuyoshi Haraguchi, Stephen Tims, Michaela Froehlich, Leslie Keith Fifield, Takahiro Aze, Kimikazu Sasa, Tsutomu Takahashi, Masumi Matsumura, Yukinori Tani, Peter R. Leavitt, Hideyuki Doi, Tomohisa Irino, Kazuyoshi Moriya, Akira Hayashida, Kotaro Hirose, Hidekazu Suzuki, Yoshiki Saito

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

For assessment of the potential of the Beppu Bay sediments as a Global Boundaries 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 cm (1953 CE), which coincides with an initial increase in global fallout of ²³⁹Pu+²⁴⁰Pu. The onset of the proliferation of anthropogenic fingerprints was followed by diverse human-associated events, including a rapid increase in percent modern ¹⁴C in anchovy scales, changes in nitrogen and carbon cycling as recorded by anchovy δ¹⁵N and δ¹³C, elevated pollution of heavy metals, increased depositions of novel materials (spheroidal carbonaceous particles, microplastics, polychlorinated biphenyls), the occurrence of hypoxia (Re/Mo ratio) and eutrophication (biogenic opal, TOC, TN, diatoms, chlorophyll a), unprecedented microplankton community changes (compositions of carotenoids, diatoms, dinoflagellates), abnormally high spring air temperatures as inferred from diatom fossils, and lithological changes. These lines of evidence indicate that the base of the 1953 layer is the best GSSP level candidate in the stratigraphy at this site.

Original language	English
Journal	Anthropocene Review
DOIs	https://doi.org/10.1177/20530196221135077
Publication status	Published - 2023

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Kuwae, M., Finney, B. P., Shi, Z., Sakaguchi, A., Tsugeki, N., Omori, T., Agusa, T., Suzuki, Y., Yokoyama, Y., Hinata, H., Hatada, Y., Inoue, J., Matsuoka, K., Shimada, M., Takahara, H., Takahashi, S., Ueno, D., Amano, A., Tsutsumi, J., ... Saito, Y. (2023). Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series. Anthropocene Review. https://doi.org/10.1177/20530196221135077

@article{29cca97d074140adb18c3c1590c3a70a,

title = "Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series",

abstract = "For assessment of the potential of the Beppu Bay sediments as a Global Boundaries 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 cm (1953 CE), which coincides with an initial increase in global fallout of 239Pu+240Pu. The onset of the proliferation of anthropogenic fingerprints was followed by diverse human-associated events, including a rapid increase in percent modern 14C in anchovy scales, changes in nitrogen and carbon cycling as recorded by anchovy δ15N and δ13C, elevated pollution of heavy metals, increased depositions of novel materials (spheroidal carbonaceous particles, microplastics, polychlorinated biphenyls), the occurrence of hypoxia (Re/Mo ratio) and eutrophication (biogenic opal, TOC, TN, diatoms, chlorophyll a), unprecedented microplankton community changes (compositions of carotenoids, diatoms, dinoflagellates), abnormally high spring air temperatures as inferred from diatom fossils, and lithological changes. These lines of evidence indicate that the base of the 1953 layer is the best GSSP level candidate in the stratigraphy at this site.",

keywords = "Anthropocene, Beppu Bay, GSSP, global warming, nitrogen cycle, stratigraphy, varve",

author = "Michinobu Kuwae and Finney, {Bruce P.} and Zhiyuan Shi and Aya Sakaguchi and Narumi Tsugeki and Takayuki Omori and Tetsuro Agusa and Yoshiaki Suzuki and Yusuke Yokoyama and Hirofumi Hinata and Yoshio Hatada and Jun Inoue and Kazumi Matsuoka and Misaki Shimada and Hikaru Takahara and Shin Takahashi and Daisuke Ueno and Atsuko Amano and Jun Tsutsumi and Masanobu Yamamoto and Keiji Takemura and Keitaro Yamada and Ken Ikehara and Tsuyoshi Haraguchi and Stephen Tims and Michaela Froehlich and Fifield, {Leslie Keith} and Takahiro Aze and Kimikazu Sasa and Tsutomu Takahashi and Masumi Matsumura and Yukinori Tani and Leavitt, {Peter R.} and Hideyuki Doi and Tomohisa Irino and Kazuyoshi Moriya and Akira Hayashida and Kotaro Hirose and Hidekazu Suzuki and Yoshiki Saito",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2022.",

year = "2023",

doi = "10.1177/20530196221135077",

language = "English",

journal = "Anthropocene Review",

issn = "2053-0196",

publisher = "SAGE Publications Inc.",

}

Kuwae, M, Finney, BP, Shi, Z, Sakaguchi, A, Tsugeki, N, Omori, T, Agusa, T, Suzuki, Y, Yokoyama, Y, Hinata, H, Hatada, Y, Inoue, J, Matsuoka, K, Shimada, M, Takahara, H, Takahashi, S, Ueno, D, Amano, A, Tsutsumi, J, Yamamoto, M, Takemura, K, Yamada, K, Ikehara, K, Haraguchi, T, Tims, S , Froehlich, M, Fifield, LK, Aze, T, Sasa, K, Takahashi, T, Matsumura, M, Tani, Y, Leavitt, PR, Doi, H, Irino, T, Moriya, K, Hayashida, A, Hirose, K, Suzuki, H & Saito, Y 2023, 'Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series', Anthropocene Review. https://doi.org/10.1177/20530196221135077

TY - JOUR

T1 - Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series

AU - Kuwae, Michinobu

AU - Finney, Bruce P.

AU - Shi, Zhiyuan

AU - Sakaguchi, Aya

AU - Tsugeki, Narumi

AU - Omori, Takayuki

AU - Agusa, Tetsuro

AU - Suzuki, Yoshiaki

AU - Yokoyama, Yusuke

AU - Hinata, Hirofumi

AU - Hatada, Yoshio

AU - Inoue, Jun

AU - Matsuoka, Kazumi

AU - Shimada, Misaki

AU - Takahara, Hikaru

AU - Takahashi, Shin

AU - Ueno, Daisuke

AU - Amano, Atsuko

AU - Tsutsumi, Jun

AU - Yamamoto, Masanobu

AU - Takemura, Keiji

AU - Yamada, Keitaro

AU - Ikehara, Ken

AU - Haraguchi, Tsuyoshi

AU - Tims, Stephen

AU - Froehlich, Michaela

AU - Fifield, Leslie Keith

AU - Aze, Takahiro

AU - Sasa, Kimikazu

AU - Takahashi, Tsutomu

AU - Matsumura, Masumi

AU - Tani, Yukinori

AU - Leavitt, Peter R.

AU - Doi, Hideyuki

AU - Irino, Tomohisa

AU - Moriya, Kazuyoshi

AU - Hayashida, Akira

AU - Hirose, Kotaro

AU - Suzuki, Hidekazu

AU - Saito, Yoshiki

PY - 2023

Y1 - 2023

N2 - For assessment of the potential of the Beppu Bay sediments as a Global Boundaries 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 cm (1953 CE), which coincides with an initial increase in global fallout of 239Pu+240Pu. The onset of the proliferation of anthropogenic fingerprints was followed by diverse human-associated events, including a rapid increase in percent modern 14C in anchovy scales, changes in nitrogen and carbon cycling as recorded by anchovy δ15N and δ13C, elevated pollution of heavy metals, increased depositions of novel materials (spheroidal carbonaceous particles, microplastics, polychlorinated biphenyls), the occurrence of hypoxia (Re/Mo ratio) and eutrophication (biogenic opal, TOC, TN, diatoms, chlorophyll a), unprecedented microplankton community changes (compositions of carotenoids, diatoms, dinoflagellates), abnormally high spring air temperatures as inferred from diatom fossils, and lithological changes. These lines of evidence indicate that the base of the 1953 layer is the best GSSP level candidate in the stratigraphy at this site.

AB - For assessment of the potential of the Beppu Bay sediments as a Global Boundaries 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 cm (1953 CE), which coincides with an initial increase in global fallout of 239Pu+240Pu. The onset of the proliferation of anthropogenic fingerprints was followed by diverse human-associated events, including a rapid increase in percent modern 14C in anchovy scales, changes in nitrogen and carbon cycling as recorded by anchovy δ15N and δ13C, elevated pollution of heavy metals, increased depositions of novel materials (spheroidal carbonaceous particles, microplastics, polychlorinated biphenyls), the occurrence of hypoxia (Re/Mo ratio) and eutrophication (biogenic opal, TOC, TN, diatoms, chlorophyll a), unprecedented microplankton community changes (compositions of carotenoids, diatoms, dinoflagellates), abnormally high spring air temperatures as inferred from diatom fossils, and lithological changes. These lines of evidence indicate that the base of the 1953 layer is the best GSSP level candidate in the stratigraphy at this site.

KW - Anthropocene

KW - Beppu Bay

KW - GSSP

KW - global warming

KW - nitrogen cycle

KW - stratigraphy

KW - varve

UR - http://www.scopus.com/inward/record.url?scp=85144285140&partnerID=8YFLogxK

U2 - 10.1177/20530196221135077

DO - 10.1177/20530196221135077

M3 - Article

SN - 2053-0196

JO - Anthropocene Review

JF - Anthropocene Review

ER -

Beppu Bay, Japan, as a candidate Global Boundaries Stratotype Section and Point for an Anthropocene series

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