Radioactive Cesium from the Chernobyl Accident in the Greenland Ice Sheet

Measurements of cesium-134 and cesium-137 in Greenland snow together with models of long-range transport have been used to assess radionuclide deposition in the Arctic after the Chernobyl accident. The results suggest that a well-defined layer of radioactive cesium is now present in polar glaciers,...

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Veröffentlicht in:	Science (American Association for the Advancement of Science) 1987-08, Vol.237 (4815), p.633-634
Hauptverfasser:	Davidson, C. I., Harrington, J. R., Stephenson, M. J., Monaghan, M. C., Pudykiewicz, J., Schell, W. R.
Format:	Artikel
Sprache:	eng
Schlagworte:	210300 - Power Reactors, Nonbreeding, Graphite Moderated 500300 - Environment, Atmospheric- Radioactive Materials Monitoring & Transport- (-1989) ACCIDENTS ALKALI METAL ISOTOPES ARCTIC REGIONS ATMOSPHERIC PRECIPITATIONS Atmospherics Atoms & subatomic particles BETA DECAY RADIOISOTOPES BETA-MINUS DECAY RADIOISOTOPES Cesium CESIUM 134 CESIUM 137 CESIUM ISOTOPES Cesium Radioisotopes CHERNOBYLSK-4 REACTOR Clouds Earth, ocean, space ENRICHED URANIUM REACTORS ENVIRONMENTAL EFFECTS ENVIRONMENTAL SCIENCES ENVIRONMENTAL TRANSPORT Exact sciences and technology External geophysics FALLOUT Glacial accumulation Glaciers GRAPHITE MODERATED REACTORS GREENLAND HOURS LIVING RADIOISOTOPES Ice sheets INTERNAL CONVERSION RADIOISOTOPES ISOMERIC TRANSITION ISOTOPES ISOTOPES LONG-RANGE TRANSPORT LWGR TYPE REACTORS MASS TRANSFER Measurement Models, Theoretical MONITORING Nuclear accidents & safety Nuclear Reactors NUCLEI ODD-EVEN NUCLEI ODD-ODD NUCLEI POLAR REGIONS POWER REACTORS Radiation Radiation accidents RADIATION MONITORING Radioactive decay Radioactive Fallout Radioactive materials Radioactive snow gages RADIOISOTOPES REACTORS SNOW Snow. Ice. Glaciers SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS THERMAL REACTORS Ukraine WATER COOLED REACTORS YEARS LIVING RADIOISOTOPES
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Beschreibung
Zusammenfassung:	Measurements of cesium-134 and cesium-137 in Greenland snow together with models of long-range transport have been used to assess radionuclide deposition in the Arctic after the Chernobyl accident. The results suggest that a well-defined layer of radioactive cesium is now present in polar glaciers, providing a new reference for estimating snow accumulation rates and dating ice core samples.
ISSN:	0036-8075 1095-9203
DOI:	10.1126/science.3603043