Free-Fall Coring Tube: A New Type of Gravity Bottom Sampler

Research Article| October 01, 1946 FREE-FALL CORING TUBE: A NEW TYPE OF GRAVITY BOTTOM SAMPLER M. JUUL HVORSLEV; M. JUUL HVORSLEV GRADUATE SCHOOL OF ENGINEERING, HARVARD UNIVERSITY, CAMBRIDGE, MASS.; WOODS HOLE OCEANOGRAPHIC INSTITUTION, WOODS HOLE, MASS. Search for other works by this author on: GSW Google Scholar HENRY C STETSON HENRY C STETSON GRADUATE SCHOOL OF ENGINEERING, HARVARD UNIVERSITY, CAMBRIDGE, MASS.; WOODS HOLE OCEANOGRAPHIC INSTITUTION, WOODS HOLE, MASS. Search for other works by this author on: GSW Google Scholar Author and Article Information M. JUUL HVORSLEV GRADUATE SCHOOL OF ENGINEERING, HARVARD UNIVERSITY, CAMBRIDGE, MASS.; WOODS HOLE OCEANOGRAPHIC INSTITUTION, WOODS HOLE, MASS. HENRY C STETSON GRADUATE SCHOOL OF ENGINEERING, HARVARD UNIVERSITY, CAMBRIDGE, MASS.; WOODS HOLE OCEANOGRAPHIC INSTITUTION, WOODS HOLE, MASS. Publisher: Geological Society of America Received: 15 Feb 1946 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1946, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1946) 57 (10): 935–950. https://doi.org/10.1130/0016-7606(1946)57[935:FCTANT]2.0.CO;2 Article history Received: 15 Feb 1946 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation M. JUUL HVORSLEV, HENRY C STETSON; FREE-FALL CORING TUBE: A NEW TYPE OF GRAVITY BOTTOM SAMPLER. GSA Bulletin 1946;; 57 (10): 935–950. doi: https://doi.org/10.1130/0016-7606(1946)57[935:FCTANT]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 SocietyGSA Bulletin Search Advanced Search Abstract A new method of operating gravity-coring tubes has been developed and tested. By means of a pilot weight and release mechanism, the coring tube with drive weight and guide vanes is released at a predetermined distance above the sea bottom and allowed to drop freely through the water. It thereby gains considerable velocity and momentum, and the energy available for forcing the tube into the sediments may be increased in this manner. This method of operation has proved to be especially valuable in coring firm sediments, in which hitherto it has been difficult to obtain a satisfactory depth of penetration with a coring tube whose downward velocity is governed by the safe speed at which a cable may be payed out. Two coring tubes of this type have been built for the Woods Hole Oceanographic Institution, and cores of bottom sediments obtained in the North Atlantic Ocean at depths up to 2250 fathoms. The general theory and details of construction and operation and some of the results obtained are described. 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.