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Space/Science » in reply to As I recall,

Measurements

RobVG — 10/11/2017 4:37:47 PM (archived)

I wondered if ground penetrating radar was used and sure enough it is, along with drilling. GPR was used as early as 1929 to measure glaciers.

https://en.m.wikipedia.org/wiki/Ground-penetrating_radar#History

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The whole thread (11 posts)

Arctic ice minimum fails to break record. - hank - 9/29/2017 5:59:30 PM
- "However" - RobVG - 10/9/2017 4:02:33 PM
  - As I recall, - podrock - 10/10/2017 3:09:06 AM
    - Measurements - RobVG - 10/11/2017 4:37:47 PM
      - It is used, mounted on aircraft; to measure ice thickness. - hank - 10/11/2017 5:19:49 PM
        
        I don't read denialists. - RobVG - 10/11/2017 5:34:55 PM
        
        Ice thickness is also routinely measured by submarines on patrol under the ice. - hank - 10/12/2017 12:44:57 PM
    - Nah - RobVG - 10/10/2017 3:04:58 PM
      - Then again, - hank - 10/10/2017 6:42:26 PM
  - No, they have always measured volume. - hank - 10/9/2017 7:36:48 PM
- Update: The September polar ice AVERAGE. - hank - 10/8/2017 6:11:45 PM

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