default author photo

Aya Sakaguchi

University of Tsukuba

SCHOLARLY PAPERS

4

DOWNLOADS

114

TOTAL CITATIONS

0

Scholarly Papers (4)

Actions:
Email selected abstracts
1.

Reconstruction of 129i Input History to the Surface Environment Using a Sediment Core from Beppu Bay

Number of pages: 21 Posted: 12 Jun 2025
Zhiyuan Shi, Kimikazu Sasa, Masumi Matsumura, Tsutomu Takahashi, Yuichi Takaku, Michinobu Kuwae, Shinya Yamasaki, Keisuke Sueki and Aya Sakaguchi
affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Tsukuba, affiliation not provided to SSRN and University of Tsukuba
Downloads 46 (1,109,210)

Abstract:

Loading...

Anthropocene, Global Boundary Stratotype Section and Point, 129I/127I, Sediment core, Beppu Bay

2.

Characterization and first application of a new 236Np spike for (A)MS measurements of 237Np

Number of pages: 21 Posted: 16 Mar 2026
Andreas Wiederin, Hiromitsu Haba, Martin Martschini, Peter Steier, Aya Sakaguchi, Akihiko Yokoyama and Karin Hain
University of Vienna, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Vienna, University of Tsukuba, affiliation not provided to SSRN and University of Vienna
Downloads 32 (1,304,549)

Abstract:

Loading...

236Np, 237Np, AMS, isotopic spike characterization, actinides, environmental samples

3.

Temporal changes of 239,240Pu activity concentrations in the Far Eastern Seas: Partitioning of 239,240Pu between bottom waters and sediments

Number of pages: 33 Posted: 27 Dec 2025
Katsumi Hirose, Daisuke Tsumune, Aya Sakaguchi and Pavel P. Povinec
affiliation not provided to SSRN, University of Tsukuba, University of Tsukuba and affiliation not provided to SSRN
Downloads 29 (1,345,526)

Abstract:

Loading...

Plutonium, Sea of Japan, Overlying water, sediment, partition coefficient

4.

Temporal changes of 239,240Pu activity concentrations in overlying waters and sediments in the Far Eastern Seas: Partitioning of 239,240Pu between bottom waters and sediments

Number of pages: 25 Posted: 01 Jun 2026
Katsumi Hirose, Pavel P. Povinec, Aya Sakaguchi and Daisuke Tsumune
affiliation not provided to SSRN, affiliation not provided to SSRN, University of Tsukuba and University of Tsukuba
Downloads 7 (1,575,921)

Abstract:

Loading...

Plutonium, Sea of Japan, Overlying water, sediment, partition coefficient