DOI: 10.1007/s00531-015-1150-x
Scopus记录号: 2-s2.0-84931571465
论文题名: Characterization of submarine canyon bathymetries in northern Ionian Sea, Italy, using sediment geochemical variation induced by transportation distance and basin depth
作者: Francesco P. ; Tohru O. ; Critelli S.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2015
卷: 104, 期: 5 起始页码: 1353
结束页码: 1364
语种: 英语
英文关键词: Basin bathymetry
; Geochemistry
; Ionian Sea
; Marine mud
; Principal component analysis
; Transportation distance
Scopus关键词: bathymetry
; marine sediment
; mud
; principal component analysis
; sediment chemistry
; sediment transport
; sedimentation rate
; submarine canyon
; Ionian Sea
; Italy
; Mediterranean Sea
英文摘要: Geochemical data of marine mud sediments collected from the Esaro, Neto and Corigliano canyons in the northern Ionian Sea (southern Italy) were investigated in order to characterize canyon bathymetry types. Mud sample compositions analyzed by the principal component analysis (PCA) provided useful information for the morphology of the depositional area of the northern Ionian Sea. The use of sediment geochemical data as well as transportation distance and depth as input variables for PCA enabled the extraction of following latent variables: basin depth (PC1), sedimentation rate (PC2) and transportation distance (PC3). Based on these results, we further developed geochemical indices that can estimate basin depth (F1), sedimentation rate (F2) and transportation distance (F3); these functions can be solely calculated from the elemental concentration data of the mud samples. Since these F1, F2 and F3 functions are mathematically independent variables, they facilitate more precise characterization of individual canyon types. That is, the Esaro Canyon is regarded as a sediment-starved deep canyon characterized by a single source area; the Neto Canyon can be seen as a deeply sloped submarine apron system and sediments are mainly supplied by the sediment gravity flows; the Corigliano Canyon is characterized by multiple sources and moderately sloped system, whose sediments disperse mainly by traction currents. These interpretations are concordant with the basin bathymetry of the studied area. Therefore, F1, F2 and F3 functions might be applicable to any oceanic basins. © 2015, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931571465&doi=10.1007%2fs00531-015-1150-x&partnerID=40&md5=7fb67cfc50cffd136e99cc28bdcab4bd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70283
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Dipartimento di Biologia, Ecologia e Scienze della Terra, Università degli Studi della Calabria, Via P. Bucci, Arcavacata di Rende, CS, Italy; Department of Earth Sciences, Waseda University, 1-6-1, Nishiwaseda, Shinjuku-ku, Tokyo, Japan
Recommended Citation:
Francesco P.,Tohru O.,Critelli S.. Characterization of submarine canyon bathymetries in northern Ionian Sea, Italy, using sediment geochemical variation induced by transportation distance and basin depth[J]. International Journal of Earth Sciences,2015-01-01,104(5)