Free Republic
Browse · Search
News/Activism
Topics · Post Article

Skip to comments.

A possible impact crater for the 1908 Tunguska Event
Terra Nova ^ | 7/01/2007 | Terra Nova

Posted on 06/22/2007 11:46:00 AM PDT by Mike Darancette

The so-called ‘Tunguska Event’ refers to a major explosion that occurred on 30 June 1908 in the Tunguska region of Siberia, causing the destruction of over 2000 km2 of taiga, globally detected pressure and seismic waves, and bright luminescence in the night skies of Europe and Central Asia, combined with other unusual phenomena. The ‘Tunguska Event’ may be related to the impact with the Earth of a cosmic body that exploded about 5–10 km above ground, releasing in the atmosphere 10–15 Mton of energy. Fragments of the impacting body have never been found, and its nature (comet or asteroid) is still a matter of debate. We report results from the investigation of Lake Cheko, located 8 km NNW of the inferred explosion epicenter. Its funnel-like bottom morphology and the structure of its sedimentary deposits, revealed by acoustic imagery and direct sampling, all suggest that the lake fills an impact crater. Lake Cheko may have formed due to a secondary impact onto alluvial swampy ground; the size and shape of the crater may have been affected by the nature of the ground and by impact-related melting and degassing of a permafrost layer. -snip-

(Excerpt) Read more at blackwell-synergy.com ...


TOPICS: News/Current Events
KEYWORDS: bfr; catastrophism; comets; lakecheko; russia; siberia; tunguska
Navigation: use the links below to view more comments.
first previous 1-2021-26 last
To: Yollopoliuhqui

Not a lot of progress in that discipline. If they can link it to Global Warming they might electrically attract Algore.


21 posted on 06/22/2007 2:07:03 PM PDT by RightWhale (Repeal the Treaty)
[ Post Reply | Private Reply | To 15 | View Replies]

To: Andonius_99

now that is sicko


22 posted on 06/22/2007 2:22:54 PM PDT by reefdiver (The sheriff of Nottingham collected taxes on behalf of the common good)
[ Post Reply | Private Reply | To 9 | View Replies]

To: Yollopoliuhqui

This is just a layman’s notion, but if the Tunguska projectile were a comet consisting mainly of frozen water, could the explosion that occurred be the result of air friction bringing that mass of water to a sudden, violent boil?


23 posted on 06/22/2007 2:51:39 PM PDT by elcid1970
[ Post Reply | Private Reply | To 15 | View Replies]

To: elcid1970

Actually scientific belief at the moment is it was a stony asteroid that exploded in midair, not a comet.


24 posted on 06/22/2007 3:57:01 PM PDT by Strategerist
[ Post Reply | Private Reply | To 23 | View Replies]

To: Yollopoliuhqui; Swordmaker; Fred Nerks

Thanks Yollopoliuhqui.

http://www.freerepublic.com/focus/f-news/1854726/posts?page=15#15


25 posted on 06/23/2007 7:31:57 AM PDT by SunkenCiv (Time heals all wounds, particularly when they're not yours. Profile updated June 20, 2007.)
[ Post Reply | Private Reply | To 15 | View Replies]

To: SunkenCiv; Yollopoliuhqui
Google Earth:

60.963978 101.860021

Beautiful, once you realize you’re zooming in on ice, not cloud cover...but about 20 degrees too far north for my tastes.

And also about 180 degrees wrong both politically & longitudinally.

26 posted on 06/23/2007 9:29:23 PM PDT by ApplegateRanch (Islam: a Satanically Transmitted Disease, spread by unprotected intimate contact with the Koranus.)
[ Post Reply | Private Reply | To 25 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-2021-26 last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
News/Activism
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson