Abyssal Furrows and Hyperbolic Echo Traces on the Bahama Outer Ridge

Abstract

Research Article| August 01, 1974 Abyssal Furrows and Hyperbolic Echo Traces on the Bahama Outer Ridge Charles D. Hollister; Charles D. Hollister 1Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543 Search for other works by this author on: GSW Google Scholar Roger D. Flood; Roger D. Flood 2Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 025433Department of Earth and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 Search for other works by this author on: GSW Google Scholar David A. Johnson; David A. Johnson 4Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543 Search for other works by this author on: GSW Google Scholar Peter Lonsdale; Peter Lonsdale 5Marine Physical Laboratory, Scripps Institution of Oceanography, La Jolla, California 92037 Search for other works by this author on: GSW Google Scholar John B. Southard John B. Southard 6Department of Earth and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 Search for other works by this author on: GSW Google Scholar Geology (1974) 2 (8): 395–400. https://doi.org/10.1130/0091-7613(1974)2<395:AFAHET>2.0.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Charles D. Hollister, Roger D. Flood, David A. Johnson, Peter Lonsdale, John B. Southard; Abyssal Furrows and Hyperbolic Echo Traces on the Bahama Outer Ridge. Geology 1974;; 2 (8): 395–400. doi: https://doi.org/10.1130/0091-7613(1974)2<395:AFAHET>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Near-bottom investigations with a deep-towed instrument package show that steep-sided, flat-floored furrows (1 to 100 m wide by 0.5 to 20 m deep) eroded into Holocene and Pleistocene hemipelagic mud are responsible for the characteristic hyperbolic echo traces on surface-ship echograms recorded over the Bahama Outer Ridge (water depth, 4 to 5 km). This echogram character, previously interpreted as being caused by side reflections from depositional wave forms, has been typically recorded in abyssal regions of contour-current activity. It is suggested that these remarkably straight longitudinal furrows are formed by secondary helical circulations in the bottom-boundary mixed layer. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.