INTERNACIONAL
El gran deshielo oculto: cómo los canales secretos aceleran el peligro en la Antártida
Las plataformas de hielo de la Antártida almacenan la mayor reserva de agua dulce del planeta. Su destino puede definir cómo cambian los océanos y las costas en las próximas décadas.
Cuando estas plataformas pierden solidez y se adelgazan, dejan de frenar el avance del hielo continental al mar, lo que puede acelerar el aumento del nivel del mar a escala global.
Un equipo de científicos de Noruega, Australia, Finlandia y Reino Unido reveló que los canales ocultos bajo el hielo aceleran el derretimiento en zonas profundas. Ese proceso amenaza la solidez de estas estructuras colosales y su papel como barrera natural.
El hallazgo, que fue publicado en la revista Nature Communications mostró que esos canales pueden multiplicar por diez la velocidad de derretimiento en áreas específicas. Así, aumenta la vulnerabilidad de las plataformas y se facilita el traslado de hielo al océano.
Los investigadores pertenecen al Instituto Polar Noruego, la Universidad de Tasmania, el Centro Ártico de la Universidad de Laponia y la Universidad de Helsinki, que son instituciones reconocidas a nivel mundial por su trabajo en ciencias polares y cambio climático.
Los investigadores buscaron comprender cómo el derretimiento en la base de las plataformas de hielo afecta su estabilidad. El problema radica en que estas plataformas funcionan como freno natural para el avance del hielo hacia el mar.
El enfoque estuvo en los canales de base, que son surcos de varios kilómetros de ancho y cientos de metros de profundidad bajo el hielo. Estos canales modifican los patrones de derretimiento y la resistencia estructural de la plataforma.
Se buscó determinar si estos canales refuerzan el hielo o lo debilitan, creando zonas vulnerables. Además, los investigadores quisieron entender cómo la forma del fondo de hielo y la llegada de agua oceánica alteran el proceso.
El equipo utilizó simulaciones numéricas de alta resolución en la plataforma Fimbulisen, en la Antártida Oriental. Observaron cómo la circulación de agua y la topografía del fondo de hielo pueden atrapar agua cálida en los canales.
En el estudio, los investigadores afirmaron que la interacción entre la circulación y la topografía canalizada genera una circulación localizada que atrapa el agua cálida intrusa bajo el hielo. Este mecanismo incrementó las tasas de derretimiento en los canales.
Los modelos confrontaron escenarios con canales bien definidos y una base lisa, además de entradas de agua fría y de agua profunda, que tiene mayor temperatura. El derretimiento se multiplicó por diez en los canales donde ingresó agua cálida.
“Incluso intrusiones modestas de agua profunda circumpolar podrían tener implicancias importantes para la estabilidad de las plataformas de hielo frías de la Antártida”, declaró el equipo en el estudio al subrayar el alcance del fenómeno.
El crecimiento de los canales, causado por el derretimiento diferencial, debilitó las zonas más profundas de la plataforma y elevó el riesgo de fracturas. La velocidad de las corrientes y la forma del canal definieron los patrones de derretimiento.
“Descubrimos que la forma de la parte inferior de la plataforma de hielo no es solo una característica pasiva. Puede atrapar activamente el calor del océano exactamente en los lugares donde el derretimiento adicional es más importante”, explicó el científico principal Tore Hattermann, del Hub de Investigación iC3 Polar en Tromsø, Noruega.
La plataforma de hielo Fimbulisen se encuentra en la Antártida Oriental, una región más fría y que por eso suele considerarse menos amenazada que el resto del continente.
“Observamos bajo la plataforma de hielo Fimbulisen que incluso pequeñas cantidades de agua más cálida pueden incrementar sustancialmente el derretimiento dentro de los canales”, señaló.
“Como resultado, los canales pueden crecer y, en el peor de los casos, debilitar la estabilidad de toda la plataforma de hielo”, alertó.
Tras los resultados, los investigadores sugirieron incorporar la topografía detallada en los modelos climáticos para mejorar las proyecciones sobre el nivel del mar. No considerar estos procesos podría llevar a subestimar riesgos reales.
Igualmente reconocieron que faltan observaciones directas bajo el hielo y que los modelos trabajan con escenarios ideales. Subrayaron la necesidad de más mediciones en campo y tecnología avanzada.
En la conclusión, los científicos advirtieron: “Las plataformas de hielo con derretimiento bajo pueden ser más vulnerables a intrusiones moderadas de agua cálida de lo que se pensaba”. Observar tanto los grandes procesos como los detalles ocultos resulta clave para entender el destino de la Antártida y de los océanos.
Plataforma de hielo,Antártida,capa de hielo,aumento nivel del mar,cambio climático,océano Austral,hielo,polos,calentamiento global,ecosistema
INTERNACIONAL
Indonesian passenger ship carrying 240 people loses contact in Java Sea, search underway
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A passenger ship carrying 240 people vanished from contact in the Java Sea on Sunday local time, triggering an urgent search as Indonesian crews raced to locate the vessel.
The Virgo Transport 8 was traveling from Surabaya, East Java, to Banjarmasin on the island of Borneo when communications with the ship were lost, the Associated Press reported, citing Indonesia’s Banjarmasin Search and Rescue Office.
Authorities said the vessel was last tracked roughly 92 miles from a pier in Banjarmasin, the capital of South Kalimantan province.
MOM LOSES GRIP ON DAUGHTER AS PASSENGER FERRY CAPSIZES WITH 20 PEOPLE STILL MISSING
Authorities are searching for the Virgo Transport 8 after the passenger ship lost contact while traveling from East Java to South Kalimantan. (EyesWideOpen/Getty Images)
Search-and-rescue teams launched an operation after receiving a report that the ship had suffered a communications failure during the voyage, according to the AP.
Officials had not reported any deaths or injuries as of Sunday, and it was not immediately clear what caused the vessel to lose contact or whether weather conditions were affecting the search.
MULTIPLE RESCUED FROM PONTOON BOAT NEAR ALCATRAZ AS SEARCH CONTINUES FOR MISSING PERSONS
The Virgo Transport 8 lost contact while traveling from Surabaya to Banjarmasin, according to officials. (EyesWideOpen/Getty Images)
The Virgo Transport 8 departed Surabaya, Indonesia’s second-largest city, before losing contact while crossing the Java Sea toward South Kalimantan.
The search remains underway.
The Associated Press contributed to this report.
world, asia world regions, missing persons
INTERNACIONAL
‘Trump-level’ smackdown earns Vance roaring praise as 2028 buzz builds at GOP convention
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Republicans reached a consensus that Vice President JD Vance solidified his position as the presumptive 2028 presidential candidate with his «Trump-level» smackdown of a foreign flag-waving protester who disrupted his speech at the Republican National Convention.
Vance did not hesitate after a protester interrupted his primetime speech in Dallas on Thursday by waving the flags of the Palestinian Authority and Mexico. He recalled to those watching his speech on TV: «What the people at home missed is that we just had a protester interrupting us and waving the Mexican flag.»
«Well, my friend, if you love Mexico so much, get your a– over there. I’ll buy you the plane ticket,» the VP said, to which the crowd erupted into applause.
«JD Vance just MIC DROPPED a leftist heckler who interrupted him waving a Mexican flag…this place is DEAFENING,» conservative commentator Eric Daugherty wrote on X, adding, «TOTAL PANDEMONIUM.»
CROWD ERUPTS AS VANCE SMACKS DOWN PROTESTER WAVING MEXICAN FLAG: ‘GET YOUR A– OVER THERE’
A protestor throws a Mexican flag as Vice President JD Vance speaks during the second day of the Republican National Committee midterm convention at the American Airlines Center in Dallas, Texas on September 10, 2026. (Brendan SMIALOWSKI / AFP via Getty Images)
Popular conservative pundit Benny Johnson called Vance’s quick wit an «epic response.» President Donald Trump supporter and activist Scott Pressler similarly praised Vance for reacting «without missing a beat,» and called it «an iconic moment.»
«This was masterful. A Trump-level move from JD Vance,» wrote Overton, a conservative commentary and news account. «Vice President Vance perfectly handled a protestor waving a Mexican flag at the RNC in Dallas. Then he fired back with a savage one-liner that sent the American Airlines Center into absolute bedlam.»
The moment was capped off with a «USA!» chant from those in the crowd at the GOP Midterm Convention.
Students for Trump co-founder Ryan Fournier wrote, «JD Vance just absolute [sic] WIPED THE FLOOR with a leftist heckler who interrupted his rally waving a Mexican flag.»
«The crowd went completely WILD. Unbelievable energy,» wrote Fournier.
VANCE DECLARES DEMOCRATS ‘PARTY OF HATRED,’ SAYS PARTY HAS MOVED BEYOND BIG GOVERNMENT, CENSORSHIP
Vice President JD Vance introduces U.S. President Donald Trump to speak on stage on the second day of the 2026 Republican National Convention at the American Airlines Center on September 10, 2026, in Dallas, Texas. (Justin Sullivan/Getty Images)
«JD Vance just notched the most iconic moment of the RNC when he told a protester waving a Mexican flag exactly what all red blooded Americans were thinking,» wrote Turning Point USA spokesman Andrew Kolvet.
Commentator Brilyn Hollyhand put it simply, posting on X, «Yea JD for President after this.»
Vance recovered from the interruption quickly, telling the crowd, «Ladies and gentlemen, I had a whole speech written. But I think I’ve got to change it because we just discovered the symbol of the far left — an idiot waving … a Mexican flag at a protest when he should be waving the flag of the United States of America.»
«Now, we all know, of course, that as much as that person might wave around a foreign flag, he’d much rather live in Dallas, or in Cincinnati, or in any one of our great cities than Mexico,» President Donald Trump’s No. 2 continued. «But while we wave the American flag and fight for the American dream, we have to remind ourselves tonight that the good life that is the foundation of this country’s promise is not guaranteed.»
CHARLIE KIRK HONORED AT GOP CONVENTION WITH CALL TO REJECT ‘COMFORTABLE LOSING’
People hold signs on the first day of the 2026 Republican National Convention at the American Airlines Center on September 9, 2026, in Dallas, Texas. (Photo by Tasos Katopodis/Getty Images)
«Every generation of Americans has had to fight for these things when it’s our turn,» he went on.
«And this fall, the Democrats are running candidates who will tell your children what they’re allowed to say, how they’re allowed to live, and importantly, who they ought to hate, because that’s what the Democrat Party is about in 2026,» Vance continued. «It’s not about you, it’s about foreign fraudsters, and it’s about who they hate. And we got to send their a–es back in November.»
Speculation has swirled over who will be the heir to Trump’s MAGA throne in 2028. The consensus so far among Republicans appears to be split between Vance and Secretary of State Marco Rubio — but a lot could change before the next presidential election.
jd vance, republican convention, politics, dallas fort worth, texas, donald trump, us protests
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House Homeland Security Committee Chairman Andrew Garbarino, R-N.Y., remembers exactly where he was when the World Trade Center was attacked on Sept. 11, 2001.
«I was a senior in high school. I was in Mr. Ponzi’s government class. And that’s when the first plane hit. And one of the other teachers came in and was telling Mr. Ponzi about it,» he told Fox News Digital. «We all thought it was a little plane. And then we went to the next class. And then the second plane hit, and everybody realized that stuff was wrong.»
Twenty-five years later, Garbarino leads a congressional committee that oversees a Cabinet department created explicitly after the terror attack. He’s warning that Congress needs to change how it deals with potential threats to avoid another tragedy of that scale.
«Being chairman of the committee, being a New Yorker, it’s one of those things you focus on, and you want to make sure another 9/11 doesn’t happen, and doesn’t ever happen again. And that’s my goal. That’s my priority,» he said.
House Homeland Security Committee Chairman Andrew Garbarino, R-N.Y., is sounding the alarm against congressional «complacency,» 25 years after the Sept. 11, 2001, terrorist attacks. (Newspix via Getty Images)
9/11 IS BECOMING HISTORY. MY GENERATION MUST MAKE SURE AMERICA NEVER FORGETS
«Congress is very good at being reactive… We don’t want another 9/11. So if I could leave my fingerprints on something here, it’s the fact that the focus, Congress’ focus on national security, Congress’ focus on homeland security or safety, is that we address an issue before something happens.»
HOW 9/11 TRANSFORMED SYNAGOGUE SECURITY INTO A NEW REALITY FOR THE JEWISH COMMUNITY
He said Congress needed to get into the habit of passing laws ahead of time, «instead of being like, ‘Oh my God I can’t believe this happened, how did this happen, let’s fix it now.’»
«That’s why 9/11 happened. 9/11 happened because our intelligence agencies, they were siloed, they were not sharing information. I don’t know if it was a complacency or whatever, but there were a lot of problems,» Garbarino said. «I don’t want to fall into that same complacency.»
Garbarino represents New York’s 2nd Congressional District, part of Long Island’s south shore. As a suburb of New York City, its residents are deeply attuned to that tragedy 25 years ago.
House Homeland Security Committee Chairman Rep. Andrew Garbarino presides over a hearing in the Cannon House Office Building in Washington on Dec. 11, 2025. (Anna Moneymaker/Getty Images)
«We have people that lost loved ones that day that are still dealing with it 25 years later,» Garbarino said. «So the scar is still there.»
His district and others are also still dealing with illnesses stemming from that day, including first responders who bravely rushed to the collapsing twin towers.
«There are now more people that have died from 9/11-related illnesses than died on the actual day. So it’s a day that keeps taking people away from us,» Garbarino said.
«You have firemen who, 9/11 was their first call. They were 21, 22 years old. They’re now 47… And a lot of these, some of these cancers, they take a while to take hold, and they’re now just getting sick.»
SCIENTISTS DISCOVER POSSIBLE LINK BETWEEN 9/11 AND ACCELERATED AGING
People rush away from the collapsing World Trade Center on Sept. 11, 2001, after two hijacked airplanes hit the twin towers in New York City in a terrorist attack. (Getty Images)
Earlier this year, President Donald Trump signed legislation led by Garbarino and others to address a projected funding shortfall for the World Trade Center Health Program, which helps survivors pay for their medical treatment.
He said nearly all congressional districts across the country have at least one person participating in the program, a testament to how widespread the tragedy’s effects are.
«People moved out of New York, people who came from all over the country after 9/11 to help, they all went back home, they also got sick. So this does affect the entire country,» Garbarino said.
september 11, politics, new york city, homeland security, terror
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