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- From: roberts@cmr.ncsl.nist.gov (John Roberts)
- Newsgroups: sci.space
- Subject: Re: Sea floor
- Message-ID: <C03tGM.DpE.1@cs.cmu.edu>
- Date: 31 Dec 92 03:23:27 GMT
- Sender: news+@cs.cmu.edu
- Distribution: sci
- Organization: National Institute of Standards and Technology formerly National Bureau of Standards
- Lines: 36
- Approved: bboard-news_gateway
- X-Added: Forwarded by Space Digest
- Original-Sender: isu@VACATION.VENARI.CS.CMU.EDU
-
-
- -From: jmd@bear.com (Josh Diamond)
- -Subject: Re: Justification for the Space Program
- -Date: 30 Dec 92 16:01:58 GMT
- -Organization: Bear, Stearns & Co. - FAST
-
- -Did it ever occur to anyone out there to consider the environmental
- -impact of large scale disruption of the sea floor? I could result in
- -severe problems with algal blooms and plankton die-offs, with effects
- -all the way up the food chain...
-
- You're right that any extensive mining of the sea floor will have to take
- environmental concerns into account.
-
- Another problem - there are many organisms in the sea floor material (dormant
- or in spore form) that are otherwise extinct. Bringing the bottom ooze to the
- surface could possibly revive the populations of some of these organisms.
- And it's not necessarily guaranteed that the predators that formerly kept
- these populations under control are still around.
-
- I'm not attempting to evaluate the level of risk, but it's something that
- should be considered.
-
- It would probably be a good idea to be careful with the first couple of
- subsurface Mars samples returned to Earth, on similar grounds.
-
- By the way, before I forget - I recently saw an old (1960s) clip on NASA
- Select, discussing the sterilization of unmanned probes for exploration of
- planetary surfaces (so as to avoid contaminating possible native life before
- studies could be conducted). The plan at that time was to sterilize the
- probes by exposing them to ethylene oxide gas. Items such as sensors that
- might be sensitive to ethylene oxide could be sterilized by other means,
- and covered during exposure to the gas.
-
- John Roberts
- roberts@cmr.ncsl.nist.gov
-