Eight years ago today, we reopened camp at Roosevelt Island, #Antarctica. That season, a NZ-led πŸ‡³πŸ‡Ώ team recovered a 764 meter long ice core to bedrock.

What are we looking at in this satellite image? πŸ›°πŸ‡¦πŸ‡Ά
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! 🐘... 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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More from @icy_pete

3 Nov
Waiting in line to #vote? Waiting for #polls to close? Need 1 min of icy entertainment this #Election2020?

Enjoy this compilation of the sounds made by pure ice boreholes in #Antarctica. πŸ•³πŸ§ŠπŸ‡¦πŸ‡ΆπŸ”Š
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/why… Image
Read 4 tweets

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