{
 "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": "Manus", "series": "Plates", "artist": "Kenny Lienhard", "year": 2026, "plate": "52 of 52", "palette": "rhodonite"},
 "plate": {"name": "Manus", "code": "MN", "model": "PB2002 (Bird 2003)", "class": "micro", "area_km2": 8219, "centroid_lat_lon": [-3.527, 150.499], "ocean_share": 1.0, "land_share": 0.0},
 "motion": {"frame": "no-net-rotation", "euler_pole_lat_lon": [-3.6676, 150.2349], "rotation_deg_per_million_years": 51.54851, "speed_mm_per_year_at_centroid": 29.88, "heading_deg_at_centroid": 332.0, "speed_range_mm_per_year": [0.0, 106.44], "the_artwork_drifts": "-29.88 mm a year along its cut, one frame of rock every 19530 years"},
 "cover": {"slope and ridge": 1.0},
 "palette_from": ["ocean"],
 "era": null,
 "past": {"account": "The past. The Manus plate is young sea floor 1,800 to 2,900 metres deep, so when the ice age sea stood about 120 metres lower it stayed open water, and no ice ever reached it. The sea surface above it was about 3 degrees colder at the ice age peak, going by cores in the Bismarck and Solomon seas, and warmed back to within a degree of today between about 13,000 and 11,000 years ago. In these 30,000 years the plate has also turned about one and a half degrees, probably faster than any other plate.", "source": "Bird 2003, Geochemistry Geophysics Geosystems 4:1027; Lambeck et al. 2014, PNAS 111:15296; Green et al. 2022, Climate of the Past 18:845; Tachikawa et al. 2014, Quaternary Science Reviews 86:24; Tachikawa 2024, PANGAEA 965889; Lo et al. 2022, Quaternary Science Reviews 295:107756; Lo et al. 2022, PANGAEA 952143"},
 "history": [{"years_ago": 780000, "range_years_ago": [780000, 0], "what": "A reorganization of the plate boundaries in the Manus Basin created this tiny plate.", "source": "Martinez and Taylor 1996, Marine Geophysical Researches 18:203, doi:10.1007/BF00286078"}],
 "outline_lon_lat": [[[151.09, -3.81], [151.22, -3.74], [151.3, -3.66], [151.25, -3.61], [151.2, -3.6], [151.14, -3.59], [151.09, -3.55], [151.02, -3.48], [150.98, -3.42], [150.93, -3.37], [150.88, -3.33], [150.82, -3.35], [150.79, -3.33], [150.73, -3.3], [150.68, -3.23], [150.63, -3.16], [150.62, -3.08], [150.62, -3.05], [150.56, -3.05], [150.51, -3.06], [150.44, -3.09], [150.35, -3.14], [150.25, -3.2], [150.13, -3.27], [150.03, -3.37], [149.91, -3.49], [149.82, -3.62], [149.87, -3.66], [149.94, -3.72], [150.03, -3.75], [150.12, -3.79], [150.19, -3.83], [150.23, -3.87], [150.24, -3.9], [150.32, -3.88], [150.45, -3.86], [150.55, -3.84], [150.68, -3.82], [150.79, -3.77], [150.91, -3.72], [150.99, -3.69], [151.09, -3.81]]],
 "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"
}