{
 "about": "The record of this Plate: the facts it is drawn from, kept inside the work. Plain JSON; the artwork does not read it. CC0 1.0, no rights reserved.",
 "work": {"title": "Juan Fernandez", "series": "Plates", "artist": "Kenny Lienhard", "year": 2026, "plate": "48 of 52", "palette": "kaolin"},
 "plate": {"name": "Juan Fernandez", "code": "JZ", "model": "PB2002 (Bird 2003)", "class": "micro", "area_km2": 97677, "centroid_lat_lon": [-33.345, -110.913], "ocean_share": 1.0, "land_share": 0.0},
 "motion": {"frame": "no-net-rotation", "euler_pole_lat_lon": [34.3585, 70.7183], "rotation_deg_per_million_years": 22.37675, "speed_mm_per_year_at_centroid": 73.45, "heading_deg_at_centroid": 37.3, "speed_range_mm_per_year": [0.0, 158.0], "the_artwork_drifts": "73.45 mm a year along its cut, one frame of rock every 12944 years"},
 "cover": {"slope and ridge": 0.6093, "deep ocean": 0.3907},
 "palette_from": ["ocean", "deep ocean"],
 "era": null,
 "past": {"account": "The past. This small plate is all deep sea, 931 to 5,302 metres down, so the ice age gave it no new land and no ice: the sea stood more than 100 metres lower, and the winter sea ice stopped about 2,700 kilometres to the south. At the ice age peak the surface water here was about 3.5 to 4 degrees colder than today, and it warmed between about 16,800 and 11,600 years ago.", "source": "Lambeck et al. 2014, PNAS 111:15296; Lhardy et al. 2021, Climate of the Past 17:1139; Tierney et al. 2020, Nature 584:569; Osman et al. 2021, Nature 599:239; ETOPO 2022"},
 "history": [{"years_ago": 5600000, "range_years_ago": [5950000, 5240000], "what": "This microplate began to form inside a long transform fault on the East Pacific Rise.", "source": "Bird et al. 1998, Journal of Geophysical Research 103:7049, doi:10.1029/97JB02133"}],
 "outline_lon_lat": [[[-111.66, -31.56], [-112.02, -31.54], [-112.04, -31.77], [-112.06, -31.95], [-112.06, -32.11], [-112.15, -32.34], [-112.36, -32.33], [-112.42, -32.49], [-112.42, -32.79], [-112.44, -33.11], [-112.46, -33.4], [-112.5, -33.65], [-112.6, -33.66], [-112.63, -34.0], [-112.56, -34.3], [-112.42, -34.56], [-112.19, -34.67], [-111.76, -34.81], [-111.4, -34.91], [-111.13, -34.99], [-110.83, -35.09], [-110.53, -35.06], [-110.33, -34.95], [-110.14, -34.82], [-109.92, -34.7], [-109.69, -34.61], [-109.26, -34.54], [-109.28, -34.2], [-109.27, -33.92], [-109.2, -33.7], [-109.32, -33.39], [-109.41, -33.14], [-109.18, -33.02], [-108.97, -32.94], [-109.21, -32.66], [-109.44, -32.4], [-109.79, -32.12], [-110.21, -31.92], [-110.69, -31.71], [-111.2, -31.56], [-111.66, -31.56]]],
 "sources": ["Plate outlines and motion: Bird, P. (2003). An updated digital model of plate boundaries. Geochemistry, Geophysics, Geosystems 4(3), 1027, doi:10.1029/2001GC000252. No-net-rotation frame computed from PB2002 alone.", "What covers each plate: ESA CCI Land Cover and Water Bodies, NOAA ETOPO 2022, Koppen-Geiger climate maps, NSIDC Sea Ice Index, on a 1 arc-minute grid."],
 "engine_sha256": "a7fbc03acc0fc9ba343881bb88ddaf2b7564564d8bc9cbed16e75e47e01fb3f2"
}