Published November 2019 | Version v1
Journal article Metadata-only

Measurements of beryllium isotopes in ice wedges in Alaska

Creators

  • 1. Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori 036-8561 (Japan)
  • 2. Department of Civil and Environmental Engineering, Kitami Institute of Technology, Kitami, Hokkaido 090-8507 (Japan)
  • 3. International Arctic Research Center, University of Alaska Fairbanks, Fairbanks AK99775-7340 (United States)
  • 4. Institute of Low Temperature Science, Hokkaido University, Sapporo, Hokkaido 060-0819 (Japan)
  • 5. Micro Analysis Laboratory, Tandem Accelerator (MALT), The University Museum, The University of Tokyo, 2-11-16, Yayoi, Bunkyo-ku, Tokyo 113-0032 (Japan)

Description

To explore the possibility of using ground ice archives for studies of the cosmogenic radionuclide 10Be, we analyzed the beryllium isotopes in ice wedges exposed in the Cold Regions Research and Engineering Laboratory (CRREL) Permafrost Tunnel and the Barrow Permafrost Tunnel in Alaska. We determined the concentrations of 10Be and 9Be in samples pretreated following two procedures: acidification before (procedure A) and after (procedure B) removal of particles. The 10Be and 9Be concentrations spanned wide ranges. Concentrations in procedure A samples were higher than those in procedure B samples. The 10Be/9Be ratios fell within a narrow range, and values from CRREL (about 8.5 × 10−9) and Barrow (about 7 × 10−9) were of the same order of magnitude. Further studies are needed to validate our findings and assess the feasibility of using the 10Be/9Be ratio of syngenetic ice wedges for reconstruction of 10Be variations due to cosmogenic and environmental changes, and radiometric dating of ice-wedge sequences that contain very old (beyond 1 Ma) ice.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.nimb.2019.07.046

Additional details

Identifiers

DOI
10.1016/j.nimb.2019.07.046;
PII
S0168583X19305439;

Publishing Information

Journal Title
Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
Journal Volume
459
Journal Page Range
p. 64-70
ISSN
0168-583X
CODEN
NIMBEU

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54122733
Subject category
S54: ENVIRONMENTAL SCIENCES;
Descriptors DEI
ACIDIFICATION; ALASKA; BERYLLIUM 10; BERYLLIUM 9; ECOLOGICAL CONCENTRATION; SURFACES; WATER
Descriptors DEC
ALKALINE EARTH ISOTOPES; BERYLLIUM ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DEVELOPED COUNTRIES; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HYDROGEN COMPOUNDS; ISOTOPES; LIGHT NUCLEI; NORTH AMERICA; NUCLEI; OXYGEN COMPOUNDS; RADIOISOTOPES; STABLE ISOTOPES; USA; YEARS LIVING RADIOISOTOPES

Optional Information

Copyright
Copyright (c) 2019 Elsevier B.V. All rights reserved.