4 ms·

The latest development is that the Chinese have measured a small earth quake in the sea, 1.5h after the plane has vanished. Which kind of explains why we don't

by ccozan 13y ago

The latest development is that the Chinese have measured a small earth quake in the sea, 1.5h after the plane has vanished. Which kind of explains why we don't find it or we shouldn't seek where it could land: it's on sea floor. EDIT: source http://www.chinadaily.com.cn/world/2014planemissing/2014-03/14/content_17346768.htm http://www.chinadaily.com.cn/world/2014planemissing/2014-03/...

masklinn 13y ago
A plane on sea floor generates plenty of debris when it touches down on water, see AF 447.
josephlord 13y ago
Surely a plane is too low density to cause even a "small earth quake" when it sinks to the bottom of the sea (probably in many pieces). Could a shockwave from the impact on the surface of the sea be measured as a small earthquake?
- deleted 13y ago
  [deleted]
- rjsw 13y ago
  It doesn't have to impact the sea floor, the Kursk explosion was detected by seismographs.
  - masklinn 13y ago
    The initial explosion was barely detectable from nearby Finnmark[0] (and undetected from Svalbard or Hedmark) yet was 500kg of concentrated H2O2 and 1000kg of kerosene blowing up. [0] http://en.wikipedia.org/wiki/File:NOSAR_Kursk_sesmic_readings.png http://en.wikipedia.org/wiki/File:NOSAR_Kursk_sesmic_reading...
- masklinn 13y ago
  Unless it was packed with explosives and blew up when touching bottom Kursk-style[0], that's unlikely. Not to mention the whole area is 80m deep tops, usually much less than that. [0] http://en.wikipedia.org/wiki/File:NOSAR_Kursk_sesmic_readings.png http://en.wikipedia.org/wiki/File:NOSAR_Kursk_sesmic_reading... the barely visible initial event (1.5 Richter scale) was caused by the explosion of 500kg of kerosene and 1000kg of concentrated high-test peroxide[1] [1] http://en.wikipedia.org/wiki/High-test_peroxide http://en.wikipedia.org/wiki/High-test_peroxide 85~95% H2O2, cheap and stable until in contact with a catalyst, then it decomposes explosively (~5000x volume increase) into O2 and H2O steam

by ccozan 13y ago

masklinn 13y ago

A plane on sea floor generates plenty of debris when it touches down on water, see AF 447.

josephlord 13y ago

Surely a plane is too low density to cause even a "small earth quake" when it sinks to the bottom of the sea (probably in many pieces). Could a shockwave from the impact on the surface of the sea be measured as a small earthquake?

deleted 13y ago
[deleted]
rjsw 13y ago
It doesn't have to impact the sea floor, the Kursk explosion was detected by seismographs.
- masklinn 13y ago
  The initial explosion was barely detectable from nearby Finnmark[0] (and undetected from Svalbard or Hedmark) yet was 500kg of concentrated H2O2 and 1000kg of kerosene blowing up. [0] http://en.wikipedia.org/wiki/File:NOSAR_Kursk_sesmic_readings.png http://en.wikipedia.org/wiki/File:NOSAR_Kursk_sesmic_reading...
masklinn 13y ago
Unless it was packed with explosives and blew up when touching bottom Kursk-style[0], that's unlikely. Not to mention the whole area is 80m deep tops, usually much less than that. [0] http://en.wikipedia.org/wiki/File:NOSAR_Kursk_sesmic_readings.png http://en.wikipedia.org/wiki/File:NOSAR_Kursk_sesmic_reading... the barely visible initial event (1.5 Richter scale) was caused by the explosion of 500kg of kerosene and 1000kg of concentrated high-test peroxide[1] [1] http://en.wikipedia.org/wiki/High-test_peroxide http://en.wikipedia.org/wiki/High-test_peroxide 85~95% H2O2, cheap and stable until in contact with a catalyst, then it decomposes explosively (~5000x volume increase) into O2 and H2O steam