{
 "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": "Solomon Sea", "series": "Plates", "artist": "Kenny Lienhard", "year": 2026, "plate": "44 of 52", "palette": "obsidian"},
 "plate": {"name": "Solomon Sea", "code": "SS", "model": "PB2002 (Bird 2003)", "class": "micro", "area_km2": 128668, "centroid_lat_lon": [-7.26, 152.538], "ocean_share": 1.0, "land_share": 0.0},
 "motion": {"frame": "no-net-rotation", "euler_pole_lat_lon": [-2.9512, 130.375], "rotation_deg_per_million_years": 1.66031, "speed_mm_per_year_at_centroid": 70.61, "heading_deg_at_centroid": 9.9, "speed_range_mm_per_year": [59.1, 79.12], "the_artwork_drifts": "70.61 mm a year along its cut, one frame of rock every 13235 years"},
 "cover": {"deep ocean": 0.7855, "ocean trench": 0.1947, "slope and ridge": 0.0198},
 "palette_from": ["deep ocean", "ocean trench", "ocean"],
 "era": null,
 "past": {"account": "The past. The Solomon Sea is deep ocean, typically almost 5 kilometres deep and nearly 9 in the trench on its northeast edge, and its shallowest floor lies 426 metres down, so when the ice age sea stood about 120 metres lower none of it became land; the new coasts lay on the islands around it. Mud cored at the sea’s southern edge shows the surface water about 3 degrees cooler than today until about 18,600 years ago, then warming in steps to today’s warmth by about 11,000 years ago. No ice reached these waters and the plate has no land, so its colours stay the same through the whole timeline.", "source": "Lambeck et al. 2014, PNAS 111:15296; Lo et al. 2014, Climate of the Past 10:2253; Lo et al. 2022, Quaternary Science Reviews 295:107756; Green et al. 2022, Climate of the Past 18:845"},
 "history": [{"years_ago": 34000000, "range_years_ago": [50000000, 28000000], "what": "The ocean floor of this small plate formed at a spreading ridge; studies disagree on the exact age.", "source": "Joshima et al. 1986, Geo-Marine Letters 6:229, doi:10.1007/BF02239584; Seton et al. 2020, age grid v2020.1 processed here, Geochemistry Geophysics Geosystems, doi:10.1029/2020GC009214"}],
 "outline_lon_lat": [[[154.54, -6.82], [154.22, -6.51], [153.93, -6.26], [153.52, -5.95], [153.11, -5.74], [152.65, -5.64], [152.26, -5.75], [151.88, -5.93], [151.52, -6.21], [151.15, -6.44], [150.66, -6.69], [150.15, -6.88], [149.86, -6.94], [149.31, -7.03], [148.59, -7.39], [148.73, -7.48], [148.94, -7.61], [149.15, -7.66], [149.33, -7.66], [149.61, -7.62], [149.87, -7.61], [150.17, -7.63], [150.56, -7.69], [150.92, -7.76], [151.31, -7.85], [151.68, -7.96], [152.06, -8.1], [152.41, -8.26], [152.69, -8.39], [152.96, -8.54], [153.11, -8.68], [153.24, -8.89], [153.25, -9.19], [153.7, -8.97], [154.09, -8.63], [154.87, -7.96], [155.26, -7.63], [155.45, -7.49], [154.93, -7.29], [154.54, -6.82]]],
 "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"
}