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http://hdl.handle.net/2122/2492
DC Field | Value | Language |
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dc.contributor.authorall | Liotta, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.authorall | Favara, R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.authorall | Valenza, M.; Dipartimento di Chimica e Fisica della Terra, Universita` degli Studi di Palermo, Palermo, Italy. | en |
dc.date.accessioned | 2007-09-18T13:36:12Z | en |
dc.date.available | 2007-09-18T13:36:12Z | en |
dc.date.issued | 2006 | en |
dc.identifier.uri | http://hdl.handle.net/2122/2492 | en |
dc.description.abstract | The isotopic composition of the rainfall in northwestern Sicily (Italy, central Mediterranean) was investigated in the period February 2002 to March 2003. A rain gauge network was installed and sampled monthly. The monthly values of the D and 18O ratios showed a wide range that reflected seasonal climatic variations. Mean weighted values were used to define an isotopic model of precipitation. Temporal variations in deuterium excess were also investigated. Using mean volume weighted values, the Local Meteoric Water Line (LMWL) can be represented by the equation: dD = 4.7d18O 8.2 (r2 = 0.96). Deuterium excess (d = dD 8d18O) was found to be strongly related to orography. The coastline samples were characterized by mean weighted deuterium excess values close to 12.5%; samples from inland areas showed values of 16%, while samples taken from the main reliefs showed values close to 19%. In inland areas, isotopic exchange between raindrops and moisture could shift the deuterium excess values slightly. On the higher reliefs, the interaction between falling raindrops and orographic clouds could shift the deuterium excess values significantly. The low slope of the LMWL could be referred to the high deuterium excess values of the higher sites and is related to orographic precipitation rather than to evaporation processes during the fall of the raindrops. The results obtained suggest that local orographic features may significantly change the isotopic composition of precipitation. | en |
dc.language.iso | English | en |
dc.publisher.name | Agu | en |
dc.relation.ispartof | J. Geophys. Res. | en |
dc.relation.ispartofseries | / 111 (2006) | en |
dc.subject | Isotopic composition | en |
dc.subject | Mediterranean | en |
dc.subject | precipitations | en |
dc.title | Isotopic composition of the precipitations in the central Mediterranean: origin marks and orographic precipitation effects | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | D19302 | en |
dc.subject.INGV | 01. Atmosphere::01.01. Atmosphere::01.01.01. Composition and Structure | en |
dc.subject.INGV | 01. Atmosphere::01.01. Atmosphere::01.01.02. Climate | en |
dc.subject.INGV | 01. Atmosphere::01.01. Atmosphere::01.01.04. Processes and Dynamics | en |
dc.identifier.doi | 10.1029/2005JD006818 | en |
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Longinelli (1980), Composizione isotopica delle pioggie in Sicilia. Riferimenti di base per studi idrogeologici e relazione con altre aree mediterranee, Rend. Soc. Ital. Mineral. Petrol., 36, 671– 680. Houze, R. A., Jr. (1993), Cloud Dynamics, Int. Geophys. Ser., vol. 53, pp. 502– 538, Elsevier, New York. Ingraham, N. L., and R. A. Matthews (1995), The importance of fog drip water to vegetation: Point Reyes Peninsula, California, J. Hydrol., 164, 269– 285. International Atomic Energy Agency (2005), Isotopic composition of precipitation in the Mediterranean Basin in relation to air circulation patterns and climate, IAEA TECDOC Ser. 1453, Vienna, Austria. Jouzel, J., and L. Merlivat (1984), Deuterium and oxygen-18 in precipitation: Modelling of the isotopic effects during snow formation, J. Geophys. Res., 89, 11,749– 11,757. Kendall, C., and T. B. Coplen (1985), Multisample conversion of water to hydrogen by zinc for stable isotope determination, Anal. Chem., 57, 1437– 1440. Klemp, J. 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Chamberlain (2001), Empirical relationships between elevation and the stable isotope composition of precipitation and surface waters: Considerations for studies of paleoelevation change, Am. J. Sci., 301, 1 – 15. Rindsberger, M., M. Magaritz, I. Carmi, and D. Gilad (1983), The relation between air mass trajectories and the water isotope composition of rain in the Mediterranean Sea area, Geophys. Res. Lett., 10, 43–46. Rozanski, K., L. Araguas-Araguas, and R. Gonfiantini (1992), Relation between long-term trends of oxygen-18 isotope composition of precipitation and climate, Science, 258, 981–985. Scholl, M. A., S. B. Gingerich, and G. W. Tribble (2002), The influence of microclimates and fog on stable isotope signatures used in interpretation of regional hydrology: East Maui, Hawaii, J. Hydrol., 264, 170– 184. Stewart, M. K. (1975), Stable isotope fractionation due to evaporation and isotopic exchange of falling waterdrops: Application to atmospheric processes and evaporation of lakes, J. Geophys. Res., 80, 1133– 1146. Yurtsever, Y., and J. R. Gat (1981), Atmospheric waters, in Stable Isotope Hydrology, edited by J. R. Gat, and R. Gonfiantini, pp. 103– 142, Int. At. Energy Agency, Vienna. | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | Liotta, M. | en |
dc.contributor.author | Favara, R. | en |
dc.contributor.author | Valenza, M. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.department | Dipartimento di Chimica e Fisica della Terra, Universita` degli Studi di Palermo, Palermo, Italy. | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | DiSTeM, Universit a degli Studi di Palermo, Palermo, Italy | - |
crisitem.author.orcid | 0000-0002-7203-1565 | - |
crisitem.author.orcid | 0000-0003-4588-2935 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 01. Atmosphere | - |
crisitem.classification.parent | 01. Atmosphere | - |
crisitem.classification.parent | 01. Atmosphere | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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