Acceleration-monitored coring revisited |
| |
Authors: | H Villinger J Grigel B Heesemann |
| |
Institution: | Fachbereich Geowissenschaften, Universit?t Bremen, Postfach 330 440, D-28334 Bremen, Germany, DE
|
| |
Abstract: | A measurement system is described for recording vertical accelerations of piston or gravity corers during penetration. The
system consists of acceleration, tilt, and absolute pressure sensors. Double integration of the acceleration signal during
the penetration time gives the maximum penetration depth of the core. This value, when compared with the total length of recovered
core allows quantification of core compaction or core loss. The system was used successfully on 13 gravity and piston corers
during RV Polarstern cruise XI/4 to Antarctica. In most cases the recovered core length is less than the total core penetration, with a maximum
core compaction of 30%. A general increase of core compaction or core loss with core length can be observed.
Received: 12 December 1998 / Revision received: 22 June 1999 |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|