Climate vs. anthropogenic changes in North Adriatic shelf sediments influenced by freshwater runoff (Articolo in rivista)

Type
Label
  • Climate vs. anthropogenic changes in North Adriatic shelf sediments influenced by freshwater runoff (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Alvisi F. (1), Frignani M. (1), Brunetti M. (2), Maugeri M. (3), Nanni T. (2), Albertazzi S. (1), Ravaioli M. (1) (2006)
    Climate vs. anthropogenic changes in North Adriatic shelf sediments influenced by freshwater runoff
    in Climate research; Inter-Research, Oldendorf Luhe (Germania)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Alvisi F. (1), Frignani M. (1), Brunetti M. (2), Maugeri M. (3), Nanni T. (2), Albertazzi S. (1), Ravaioli M. (1) (literal)
Pagina inizio
  • 167 (literal)
Pagina fine
  • 179 (literal)
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  • CR SPECIAL 14: Seasonal, InternanNual and decadal variability of the AtmosPhere, oceanS and marIne ecosystems The SINAPSI Project (Seasonal, InternanNual and decadal variability of the AtmosPhere, oceanS and marIne ecosystems) is a multidisciplinary study of the impacts of climate variability on Mediterranean Sea ecosystems. Contributions deal with palaeoclimatology, physical and chemical characteristics of the water column and continental shelf sediments, and effects of climate variability on microalgae, zooplankton and fishes. CR SPECIAL 14 constitutes a stepping stone toward management of the effects of climate change. Publication date: July 27, 2006 Guest Editor: Nadia Pinardi (literal)
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  • 31 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Consiglio Nazionale delle Ricerche, Istituto di Scienze Marine, Sezione di Geologia Marina, Via Gobetti 101, 40129 Bologna, Italy (2) Consiglio Nazionale delle Ricerche, Istituto di Scienze dell’Atmosfera e del Clima, Via Gobetti 101, 40129 Bologna, Italy (3) Istituto di Fisica Generale Applicata, Università di Milano, Via Brera 28, 20121 Milano, Italy (literal)
Titolo
  • Climate vs. anthropogenic changes in North Adriatic shelf sediments influenced by freshwater runoff (literal)
Abstract
  • Land-ocean coupling was investigated for the Adige River-Adriatic Shelf system by analyzing precipitation, water discharge and suspended load records over the period 1922-2000 and by comparing them with the 210Pbex and porosity depth profiles of 4 marine cores taken along the riverborne sediment transport pathway on the shelf. The results show that precipitation was affected only by minor variations in yearly and seasonal amounts but was accompanied by a significant decrease (increase) in the number of wet days (precipitation intensity). River discharge which is strongly influenced by total precipitation as well as by the number of wet days (in contrast to the quantitatively less important precipitation intensity) shows a continuous decrease throughout the whole period. A significant decrease in suspended load is recorded after the 1940s, and meteorological and hydrological data suggest a major discontinuity over the same period, which was also recorded by marine sediments as a significant decrease in accumulation rates of fine materials. After the 1970s a further change in water discharge is observed in the river-system lowlands, recorded on the Adriatic shelf as intermittent sediment accumulation, and probably related to major floods. Changes seem to be mostly anthropogenic, such as progressive withdrawal of water and sediment for agricultural and civil uses, as well as damming for irrigation purposes and for generation of electricity. (literal)
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