Particularly interesting piece, David - thanks. As many times as I've travelled between Missoula and Seattle, I could never envision the route of the Missoula floods. The map was an invaluable tool. Keep up the good work.
A comment (as usual). You struck a nerve (pet peeve really) with me on the recent (excellent) newsletter. Glaciers advance (flow) but they don’t retreat. The ice stays in place, melts away, so that the ice front moves upstream with time. Minor point, but many newbies think the ice actually moves against gravity. Once you understand that the stalling and decimation of an ice lobe is what happens, then all sorts thoughts emerge about melting ice, meltwater channels, and outwash.
I always am amazed at the interesting information you present.
Particularly interesting piece, David - thanks. As many times as I've travelled between Missoula and Seattle, I could never envision the route of the Missoula floods. The map was an invaluable tool. Keep up the good work.
Thanks…again
A comment (as usual). You struck a nerve (pet peeve really) with me on the recent (excellent) newsletter. Glaciers advance (flow) but they don’t retreat. The ice stays in place, melts away, so that the ice front moves upstream with time. Minor point, but many newbies think the ice actually moves against gravity. Once you understand that the stalling and decimation of an ice lobe is what happens, then all sorts thoughts emerge about melting ice, meltwater channels, and outwash.
Thx, Michael
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