DOI: 10.1002/grl.50703
论文题名: Decimeter-scale in situ mapping of modern cross-bedded dune deposits using parametric echo sounding: A new method for linking river processes and their deposits
作者: Sambrook Smith G.H. ; Best J.L. ; Orfeo O. ; Vardy M.E. ; Zinger J.A.
刊名: Geophysical Research Letters
ISSN: 0094-8708
EISSN: 1944-8439
出版年: 2013
卷: 40, 期: 15 起始页码: 3883
结束页码: 3887
语种: 英语
英文关键词: Dunes
; Parametric Echo Sounder (PES)
; Rio Parana
; Sedimentology
Scopus关键词: Bounding surfaces
; Dunes
; Echo sounders
; Geophysical methods
; High-resolution datum
; Rio Parana
; Sedimentary architecture
; Subsurface structures
; Acoustic devices
; Sedimentology
; Surveys
; Deposits
; alluvial deposit
; deposition
; dune field
; echo sounder
; flow field
; image analysis
; mapping
; quantitative analysis
; sedimentology
; stratabound deposit
; surveying
; Argentina
英文摘要: Collecting high-resolution data to quantify the sedimentary architecture within contemporary alluvial channels remains one of the outstanding challenges in fluvial sedimentology. Here, we present data collected using a new geophysical method, the parametric echo sounder (PES), which can meet this challenge. From surveys over a field of sand dunes in the Río Paraná, Argentina, we demonstrate the unique ability of PES to image the subsurface structure within active channels at a decimetric resolution. These data reveal the bounding surfaces between bars and dunes, as well as the foresets and reactivation surfaces within them. This provides quantitative in situ data for recent work that suggests cross-strata preserved by dunes may be more related to flow depths less than the commonly assumed bankfull level. These surveys demonstrate that PES can provide hitherto unobtainable data from alluvial channels and presents significant opportunities for more detailed coupled studies of fluvial processes and their deposits. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880905695&doi=10.1002%2fgrl.50703&partnerID=40&md5=54dd3150e7d5197e031d2a9fd5dd224b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5972
Appears in Collections: 气候减缓与适应
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作者单位: School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom
Recommended Citation:
Sambrook Smith G.H.,Best J.L.,Orfeo O.,et al. Decimeter-scale in situ mapping of modern cross-bedded dune deposits using parametric echo sounding: A new method for linking river processes and their deposits[J]. Geophysical Research Letters,2013-01-01,40(15).