{
 "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": "Balmoral Reef", "series": "Plates", "artist": "Kenny Lienhard", "year": 2026, "plate": "40 of 52", "palette": "opal"},
 "plate": {"name": "Balmoral Reef", "code": "BR", "model": "PB2002 (Bird 2003)", "class": "micro", "area_km2": 195383, "centroid_lat_lon": [-15.061, 175.871], "ocean_share": 1.0, "land_share": 0.0},
 "motion": {"frame": "no-net-rotation", "euler_pole_lat_lon": [-65.0034, 133.0369], "rotation_deg_per_million_years": 0.48098, "speed_mm_per_year_at_centroid": 45.19, "heading_deg_at_centroid": 289.9, "speed_range_mm_per_year": [44.0, 45.96], "the_artwork_drifts": "-45.19 mm a year along its cut, one frame of rock every 16568 years"},
 "cover": {"slope and ridge": 0.6851, "deep ocean": 0.3147, "shelf sea": 0.0002},
 "palette_from": ["ocean", "deep ocean", "shallow sea"],
 "era": null,
 "past": {"account": "The past. This plate is open ocean floor, most of it 2,300 to 3,200 metres deep, and no ice reached these tropical waters, so the ice age changed little here. At its peak, about 20,000 years ago, the sea stood about 130 metres lower, and the top of Balmoral Reef, the seamount the plate is named after, may have stood above the waves as a small island. The surface sea was about 3 to 4 degrees cooler then, and it warmed mostly between 16,000 and 11,000 years ago.", "source": "ETOPO 2022, NOAA NCEI; Lhardy et al. 2021, Climate of the Past 17:1139; Lambeck et al. 2014, PNAS 111:15296; Marine Regions gazetteer, MRGID 34702; Ryan et al. 2009, Geochemistry Geophysics Geosystems 10:Q03014; Osman et al. 2021, Nature 599:239; Tierney et al. 2020, Nature 584:569; lgmDA v2.1, Zenodo"},
 "history": [{"years_ago": 12000000, "range_years_ago": [12000000, 8000000], "what": "The North Fiji Basin, where this small plate lies, began to open.", "source": "Crameri et al. 2020, Nature Communications 11:3750, doi:10.1038/s41467-020-17522-9 (SZI Database entries); Schellart, Lister and Toy 2006, Earth-Science Reviews 76:191, doi:10.1016/j.earscirev.2006.01.002"}],
 "outline_lon_lat": [[[-180.0, -15.36], [-180.0, -15.62], [-179.74, -15.54], [-180.0, -15.36]], [[174.78, -13.4], [174.66, -13.41], [174.48, -13.4], [173.94, -13.3], [173.67, -13.52], [173.05, -13.49], [172.57, -13.41], [172.74, -13.69], [172.88, -13.96], [173.02, -14.29], [173.14, -14.51], [173.18, -14.67], [173.21, -14.77], [173.26, -14.9], [173.29, -14.99], [173.32, -15.08], [173.35, -15.15], [173.36, -15.23], [173.39, -15.36], [173.43, -15.44], [173.46, -15.5], [173.52, -15.57], [173.54, -15.61], [173.56, -15.7], [173.4, -15.78], [173.49, -15.92], [173.53, -16.03], [173.57, -16.15], [173.46, -16.26], [173.59, -16.5], [173.67, -16.61], [173.72, -16.71], [173.79, -16.8], [173.9, -16.85], [174.5, -16.56], [174.88, -16.87], [175.11, -16.75], [175.23, -16.74], [175.38, -16.63], [175.49, -16.62], [175.61, -16.59], [175.89, -16.56], [176.18, -16.55], [176.38, -16.57], [176.54, -16.56], [176.67, -16.55], [176.79, -16.54], [176.88, -16.54], [176.95, -16.52], [177.03, -16.52], [177.13, -16.5], [177.19, -16.5], [177.27, -16.51], [177.41, -16.51], [177.41, -16.3], [177.34, -16.3], [177.4, -16.21], [177.59, -16.22], [177.72, -16.23], [177.81, -16.23], [177.88, -16.22], [178.01, -16.17], [178.09, -16.15], [178.17, -16.12], [178.4, -16.1], [178.49, -16.09], [178.52, -15.98], [178.56, -15.9], [178.94, -15.81], [179.33, -15.73], [179.61, -15.68], [179.89, -15.65], [180.0, -15.62], [180.0, -15.36], [179.79, -15.22], [179.39, -14.97], [179.01, -14.78], [178.47, -14.5], [178.03, -14.31], [177.42, -14.06], [177.17, -13.95], [176.97, -13.85], [176.62, -13.73], [176.26, -13.67], [176.02, -13.64], [175.95, -13.42], [175.66, -13.33], [175.31, -13.24], [174.9, -13.33], [174.78, -13.4]]],
 "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"
}