dorsal/arxiv
View SchemaOne million year old groundwater in the Sahara revealed by krypton-81 and chlorine-36
| Authors | N. C. Sturchio, X. Du, R. Purtschert, B. E. Lehmann, M. Sultan, L. J. Patterson, Z. -T. Lu, P. Mueller, T. Bigler, K. Bailey, T. P. O'Connor, L. Young, R. Lorenzo, R. Becker, Z. El Alfy, B. El Kaliouby, Y. Dawood, A. M. A. Abdallah |
|---|---|
| Categories | |
| ArXiv ID | physics/0402092 |
| URL | https://arxiv.org/abs/physics/0402092 |
| DOI | 10.1029/2003GL019234 |
Abstract
Measurements of 81Kr/Kr in deep groundwater from the Nubian Aquifer (Egypt) were performed by a new laser-based atom-counting method. 81Kr ages range from \~2x10^5 to ~1x10^6 yr, correlate with 36Cl/Cl ratios, and are consistent with lateral flow of groundwater from a recharge area near the Uweinat Uplift in SW Egypt. Low delta-2H values of the 81Kr-dated groundwater reveal a recurrent Atlantic moisture source during Pleistocene pluvial periods. These results indicate that the 81Kr method for dating old groundwater is robust and such measurements can now be applied to a wide range of hydrologic problems.
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"abstract": "Measurements of 81Kr/Kr in deep groundwater from the Nubian Aquifer (Egypt)\nwere performed by a new laser-based atom-counting method. 81Kr ages range from\n\\~2x10^5 to ~1x10^6 yr, correlate with 36Cl/Cl ratios, and are consistent with\nlateral flow of groundwater from a recharge area near the Uweinat Uplift in SW\nEgypt. Low delta-2H values of the 81Kr-dated groundwater reveal a recurrent\nAtlantic moisture source during Pleistocene pluvial periods. These results\nindicate that the 81Kr method for dating old groundwater is robust and such\nmeasurements can now be applied to a wide range of hydrologic problems.",
"arxiv_id": "physics/0402092",
"authors": [
"N. C. Sturchio",
"X. Du",
"R. Purtschert",
"B. E. Lehmann",
"M. Sultan",
"L. J. Patterson",
"Z. -T. Lu",
"P. Mueller",
"T. Bigler",
"K. Bailey",
"T. P. O\u0027Connor",
"L. Young",
"R. Lorenzo",
"R. Becker",
"Z. El Alfy",
"B. El Kaliouby",
"Y. Dawood",
"A. M. A. Abdallah"
],
"categories": [
"physics.geo-ph",
"physics.atom-ph"
],
"doi": "10.1029/2003GL019234",
"title": "One million year old groundwater in the Sahara revealed by krypton-81 and chlorine-36",
"url": "https://arxiv.org/abs/physics/0402092"
},
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