Relation History: 2805948

testing how to work with the various USGS glacier data; more tuning to go; Ahern is broken

Adding 1850 glacier info #sotmus2024

1850	yes
Area1850	1075097.51038
Classifica	Little Ice Age max glacial extent
Glac_Name	Thunderbird Glacier
Known	7307
Notes_USGS	1850 extent beyond base image digitized using image: wv01_20150912_262_R1C31_thndbrd_spln.tif. image has been georeferenced to base image
Ownership	Glacier National Park
Scale	1:2000
Source	wv01_20150912 ONA 4.73
X_COORD	277538.426014
Y_COORD	5424917.75933
Year	2015
aspect	146
drainage	Olson
mod_confid	0
perimeter	7307
project	sotmus2024
source	https://www.sciencebase.gov/catalog/item/5b194ca2e4b092d965237f4a
source:name	A comprehensive inventory of maximum glacial extent in Glacier National Park during the peak of the Little Ice Age
type	multipolygon
very_confi	0

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