{
 "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": "Kermadec", "series": "Plates", "artist": "Kenny Lienhard", "year": 2026, "plate": "28 of 52", "palette": "azurite"},
 "plate": {"name": "Kermadec", "code": "KE", "model": "PB2002 (Bird 2003)", "class": "micro", "area_km2": 505345, "centroid_lat_lon": [-33.018, -179.327], "ocean_share": 0.9018, "land_share": 0.0982},
 "motion": {"frame": "no-net-rotation", "euler_pole_lat_lon": [39.5197, 5.4794], "rotation_deg_per_million_years": 2.37039, "speed_mm_per_year_at_centroid": 34.7, "heading_deg_at_centroid": 60.6, "speed_range_mm_per_year": [21.99, 71.65], "the_artwork_drifts": "34.7 mm a year along its cut, one frame of rock every 18490 years"},
 "cover": {"slope and ridge": 0.5332, "deep ocean": 0.2625, "ocean trench": 0.0629, "grassland": 0.0566, "shelf sea": 0.0432, "forest": 0.0375, "cropland": 0.0017, "lakes and rivers": 0.0013, "towns": 0.0009, "wetland": 0.0001, "desert": 0.0001},
 "palette_from": ["ocean", "deep ocean", "ocean trench"],
 "era": {"name": "Low seas", "what": "Low seas, Hawke Bay dry land", "arrives_years_before_2026": [30100, 30000], "leaves_years_before_2026": [16243, 8776], "account": "The past. With the sea about 120 metres lower, about 16,000 square kilometres of today’s shallow seas on the Kermadec plate were dry land, and the eastern North Island had about a third more land. Hawke Bay was dry, and so were the shelves from Mahia to East Cape, along the Wairarapa and in the eastern Bay of Plenty. The land was already dry when the timeline begins; the rising sea drowned most of it between 16,243 and 8,776 years ago. On this coast the ground itself rises and sinks, so the areas are approximate. The lines that stand for the shallow sea turn a quarter of the way to the colour of land, all at once, and only across those spans.", "source": "Lambeck et al. 2014, PNAS 111:15296; Clement et al. 2016, Quaternary Science Reviews 131:73; Berryman 1993, Tectonics 12:1347"},
 "history": [{"years_ago": 5500000, "range_years_ago": [5775000, 5225000], "what": "The Havre Trough began to open behind the Kermadec arc.", "source": "Ruellan et al. 2003, Geochemistry Geophysics Geosystems 4, doi:10.1029/2001GC000261"}, {"years_ago": 2000000, "range_years_ago": [2000000, 0], "what": "The southern end of the arc system, near New Zealand, began to pull apart.", "source": "Wysoczanski et al. 2019, New Zealand Journal of Geology and Geophysics 62:371, doi:10.1080/00288306.2019.1602059"}],
 "outline_lon_lat": [[[175.54, -40.6], [175.32, -40.79], [175.01, -40.98], [174.63, -41.16], [174.76, -41.57], [174.94, -41.76], [175.5, -42.06], [176.08, -41.91], [176.67, -41.76], [177.12, -41.66], [177.61, -41.5], [178.01, -41.19], [178.28, -40.81], [178.57, -40.42], [178.79, -40.09], [178.95, -39.68], [179.12, -39.23], [179.22, -38.89], [179.37, -38.54], [179.57, -38.2], [179.84, -37.48], [180.0, -37.16], [180.0, -32.3], [179.98, -32.35], [179.66, -33.02], [179.34, -33.6], [179.0, -34.25], [178.68, -34.79], [178.4, -35.16], [177.89, -35.92], [177.51, -36.46], [177.05, -37.1], [176.77, -37.48], [176.51, -37.88], [176.24, -38.29], [176.0, -38.67], [175.93, -38.76], [175.61, -39.23], [176.07, -40.05], [175.87, -40.31], [175.54, -40.6]], [[-179.23, -30.36], [-179.39, -31.0], [-179.51, -31.33], [-179.74, -31.75], [-180.0, -32.3], [-180.0, -37.16], [-179.81, -36.79], [-179.37, -36.18], [-179.04, -35.54], [-178.64, -35.02], [-178.54, -34.71], [-178.41, -34.49], [-178.29, -34.24], [-178.21, -33.85], [-177.98, -33.58], [-177.81, -33.19], [-177.67, -32.7], [-177.65, -32.2], [-177.54, -31.96], [-177.3, -31.79], [-177.11, -31.45], [-176.92, -31.04], [-176.69, -30.68], [-176.55, -30.32], [-176.34, -29.88], [-176.15, -29.47], [-176.08, -29.07], [-176.0, -28.7], [-175.88, -28.26], [-175.78, -27.78], [-175.54, -27.32], [-175.4, -26.86], [-175.42, -26.44], [-175.41, -26.02], [-175.38, -25.73], [-175.3, -25.43], [-175.26, -25.14], [-175.23, -24.84], [-175.21, -24.47], [-175.1, -24.07], [-174.99, -23.75], [-175.69, -23.85], [-176.36, -23.95], [-176.89, -24.03], [-177.42, -24.11], [-177.45, -24.24], [-177.55, -24.72], [-177.66, -25.2], [-177.79, -25.98], [-178.02, -26.77], [-178.25, -27.38], [-178.48, -27.99], [-178.71, -28.69], [-178.97, -29.5], [-179.07, -29.79], [-179.23, -30.36]]],
 "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"
}