Eight years ago today, we reopened camp at Roosevelt Island, #Antarctica. That season, a NZ-led π³πΏ team recovered a 764 meter long ice core to bedrock.
What are we looking at in this satellite image? π°π¦πΆ
What you see at Roosevelt Island, #Antarctica 1) Large living tents and long, partly buried drill trench (with flags on top)
What you see at Roosevelt Island, #Antarctica 2) Personal mountain tents for sleeping. Bonus picture: what I look(ed) like after several months in the field... sunburnt, fuzzy, gross.
What you see at Roosevelt Island, #Antarctica 3) ELEPHANTS! π... Seriously, we overwinter cargo on top of four empty fuel drums... looks like an elephant; you can see snowdrifts that accumulated overwinter.
What you see at Roosevelt Island, #Antarctica 4) Sastrugi. The uneven "dunes" of snow that cover much of the Antarctic surface, centimeters to several meters high.
What you see at Roosevelt Island, #Antarctica 5) airplane ski tracks. The Basler aircraft cut deep troughs when they land, and circles are from taxiing before takeoff.
6) As is the fun end of any #Antarctic project, we had to dig all this stuff out and get it home in the end. Here's digging out a drill trench that is mostly buried.
End: Ideally, in the end, all that we leave at an #Antarctic ice core drill site is a borehole, cased and covered for future temperature measurements.
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Written explainer at the link. TLDR: 1) As ice scrapes down hole, Doppler effect decreases sound frequency 2) "Ricochet" is sound of ice hitting bottom coming up at varying speed 3) "Heartbeat" is set by 320 m/sec speed of sound reverberating up/down hole rochester.edu/newscenter/whyβ¦