{"ok":true,"nota":{"id":"ad262295daf92d77","slug":"una-plataforma-de-hielo-de-1-6-km-de-espesor-freno-los-glaciares-hace--ad2622","titulo":"Una plataforma de hielo de 1,6 km de espesor frenó los glaciares hace 20.000 años y su desaparición elevó el m","resumen":"Los investigadores estudiaron una enorme plataforma de hielo flotante que, hace unos 20.000 años, sostenía tres grandes capas de hielo en Canadá y Groenlandia. Cuando esa plataforma desapareció, esas capas se liberaron y contribuyeron a un ascenso del nivel del mar de cientos de pies.","fuente":"phys","fuenteNombre":"Phys.org","color":"#2b5c8a","autor":"","url":"https://phys.org/news/2026-10-massive-ice-shelf-buttressed-age.html","imagen":"https://scx1.b-cdn.net/csz/news/tmb/2026/how-a-massive-ice-shel.jpg","tema":"ciencia","subtemas":["glaciares","nivel del mar","antártida","era glacial","cambio climático"],"entidades":["Canadá","Groenlandia","Antártida"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-21T21:20:08.000Z","indexTs":"2026-10-21T21:22:06.865Z","hash":"183a629b3dddbc40d5566e99457e0ee8da18c7a728a53a1d6f4d181a72a6de4f","tsa":{"time":"Oct 21 21:22:27 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"normal","registro":"hallazgo","porQueImporta":"Hace unos 20.000 años, una plataforma de hielo de casi dos kilómetros de espesor trabó el avance de enormes masas de hielo del norte del planeta. Al derretirse, esas masas se liberaron y el mar subió cientos de pies, dibujando las costas que conocemos hoy. El hallazgo sugiere que la Antártida podría comportarse de manera parecida si sus plataformas de hielo se debilitan, con consecuencias para ciudades costeras de todo el mundo. Lo que hoy parece lejano puede tener el mismo mecanismo que moldeó el mapa del planeta.","quienFirma":"Phys.org (divulgación de investigación científica)","confianza":"divulgacion","consulta":null},"sello":{"hash":"183a629b3dddbc40d5566e99457e0ee8da18c7a728a53a1d6f4d181a72a6de4f","sello":"06b8370f7525937bb6ce6b5de88d448b9d8b5db8b2f36220e4efe7500647ceee","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6572890,"aleatorio":"2b676f34cd6e917c41610a598733f2ff611575f86c2ac66344085c2599443436","tiempo":"2026-10-21T21:22:00.000Z"},"nist":{"cadena":2,"pulso":1993650,"salida":"C495D091F98A8BA32081563D5CF89DEBED17908228C40DEFEC0E57357C648E7769EBF70B539605413A4868D28E688758BD82830CD8B7399C367D910B9907C4C1","tiempo":"2026-10-21T21:21:00.000Z"},"noAntes":"2026-10-21T21:22:00.000Z"},"verificacion":{"drand":true,"nist":"inaccesible"},"tsa":{"time":"Oct 21 21:22:27 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"How a massive ice shelf buttressed the last ice age's glaciers—and what it could mean for Antarctica today","descripcion":"About 20,000 years ago, an enormous, floating ice shelf more than a mile (1.6 kilometers) thick helped lock in three of the largest ice sheets in northern Canada and Greenland. When that ice shelf disappeared, it helped unlock part of these ice sheets, which contributed to hundreds of feet of sea level rise, establishing modern coastlines as we know them.","pubDate":"Wed, 21 Oct 2026 17:20:08 EDT","url":"https://phys.org/news/2026-10-massive-ice-shelf-buttressed-age.html"},"indexado":"2026-10-21T21:22:06.865Z"}}