Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleOne million year old groundwater in the Sahara revealed by krypton-81 and chlorine-36.AuthorsSturchio, N. C.; Du, X.; Purtschert, R.; Lehmann, B. E.; Sultan, M.; Patterson, L. J.; Lu, Z.-T.; Müller, P.; Bigler, T.; Bailey, K.; O'Connor, T. P.; Young, L.; Lorenzo, R.; Becker, R.; El Alfy, Z.; El Kaliouby, B.; Dawood, Y.; Abdallah, A. M. A.PublicationGeophysical Research Letters, 2004, Vol 31, Issue 5, pn/aISSN0094-8276Publication typeArticleDOI10.1029/2003GL019234