Alaska
Alaskan Glaciers Advance and Retreat in Satellite Imagery – Eos
The forty ninth state is not any slouch in terms of ice: Greater than a tenth of the planet’s glacial space exterior of the ice sheets is situated in Alaska. However Alaskan glaciers, which anchor native ecosystems and enchant guests, are altering, new analysis reveals. Maritime glaciers in Alaska have variably superior and retreated because the Nineteen Eighties, scientists discovered by analyzing a whole bunch of satellite tv for pc pictures. This nuanced view of glacier evolution is a useful useful resource for researchers and decisionmakers alike, the crew suggests.
A View from Above
Kenai Fjords Nationwide Park in southcentral Alaska is house to almost 40 glaciers. To raised perceive how a few of the largest and most distinguished of these ice plenty have modified in latest many years, researchers turned to archival Landsat pictures taken from 1984 by 2021. They analyzed 19 glaciers captured by satellite tv for pc imagery, which had a spatial decision of 15–30 meters.
For every glacier of curiosity, Taryn Black, a glaciologist on the College of Washington in Seattle, manually mapped its decrease margins in suitably cloud-free pictures. “We ended up with a bit of over 600 glacier outlines,” stated Black. In collaboration with Deb Kurtz, the bodily science program supervisor at Kenai Fjords Nationwide Park, Black then measured the modifications within the size and space of every glacier over time utilizing three completely different strategies.
Total, Black and Kurtz discovered that the glaciers of their pattern decreased in space between 1984 and 2021. The cumulative ice loss—roughly 42 sq. kilometers—was distributed roughly evenly between the glaciers’ termini and their lateral margins. It’s not a shock that almost all of those glaciers are retreating and narrowing, stated Robert McNabb, a glaciologist at Ulster College in Northern Eire not concerned within the analysis. “Over the previous 40, 50 years or so, since we’ve began getting satellite tv for pc pictures, we’ve seen that glaciers are retreating.”
Good-Information Glaciers
The researchers subsequent divided their pattern into three teams primarily based on the place every glacier terminated—on land, in a lake, or in a marine setting like a fjord. The third group, tidewater glaciers, had been the one ones to reliably advance within the winter, Black and Kurtz confirmed. Researchers aren’t precisely certain why tidewater glaciers develop reliably every season, nevertheless it’s a recognized phenomenon, stated Black. “That’s one thing that’s fairly generally noticed in tidewater glaciers.”
Solely two of the glaciers within the researchers’ pattern each superior and grew in dimension between 1984 and 2021. One among them, the tidewater Holgate glacier, superior by about half a kilometer. That discovering was a shock, stated Black. “Based mostly on studies from individuals who had been on the market, the park thought that that glacier was retreating,” she stated. “However our knowledge confirmed that it’s been advancing since round 2014.”
One rationalization for this conduct would be the so-called shoal that Holgate glacier has constructed up, the researchers suggest. Glaciers generally transport sediments and deposit them at their termini. “They’re principally pushing this pile of sediment and pebbles in entrance of them,” stated McNabb. “They’ll sort of be like massive bulldozers.”
All that materials helps protect the glacier from comparatively heat marine water. Kurtz noticed Holgate’s shoal in 2020 when she visited the glacier.
The Advantages of an Earthquake
The one different glacier that superior and grew bigger was Paguna, a land-terminating glacier. It possible owes its success to a pure catastrophe: the magnitude 9.2 earthquake that struck Alaska’s Prince William Sound in 1964. That whopper of a quake—the second largest earthquake ever recorded—launched untold numbers of landslides, a few of which blanketed Paguna glacier in particles. Like Holgate glacier’s shoal, this materials blocks incoming photo voltaic radiation and helps forestall the glacier from melting, stated Black. “It’s thick sufficient that it truly insulates the glacier.”
These outcomes, which had been revealed in August within the Journal of Glaciology, are simply step one in what’s going to hopefully be long-term monitoring of Alaska’s glaciers, stated Black. “It’s an in depth take a look at a selected area.” Future research can construct on these measurements to proceed to trace how these glaciers climate our altering local weather, she stated. “The info that we collected for this paper can function a baseline for different research.”
—Katherine Kornei (@KatherineKornei), Science Author
Quotation: Kornei, Okay. (2022), Alaskan glaciers advance and retreat in satellite tv for pc imagery, Eos, 103, https://doi.org/10.1029/2022EO220439. Revealed on 12 September 2022.
Textual content © 2022. The authors. CC BY-NC-ND 3.0
Besides the place in any other case famous, pictures are topic to copyright. Any reuse with out specific permission from the copyright proprietor is prohibited.
Alaska
Alaska Airlines faces heat after UFC champion Khabib Nurmagomedov gets removed from flight: 'Shame on you'
Alaska Airlines is getting called out on social media after a clip surfaced showing a famous UFC fighter get into a dispute on-board until he was escorted off his flight. The video shows Russian hall of fame athlete Khabib Nurmgomedov debating airline staff in the U.S. while he was sitting in the exit row on the plane.
The video of the incident, which reportedly took place at Harry Reid International Airport in Las Vegas on Saturday, shows an employee telling the 36-year-old mixed martial artist he either has to switch seats or get off the plane. “They’re not comfortable with you sitting in the exit row,” the worker added.
“It’s not fair,” said Nurmgomedov, who was reportedly flying to Los Angeles, to which the worker replied, “It is fair. Yes, it is.”
Nurmgomedov explained that when he was checking in for the flight, he was asked he if knew English, to which he said he did. The airline worker responded, “I understand that, but it’s also off of their judgement. I’m not going to do this back-and-forth. I will call a supervisor.”
The employee reiterated the athlete could either take a different seat on the plane, or staff could “go ahead and escort” him off the flight. She asked “which one are we doing?” and then replied to Nurmgomedov saying they were going to have to rebook him on a different flight.
Across social media, people have been calling out Alaska Airlines asking why they had him removed from the plane. Many called for others to boycott the airline, and some claimed the staff were profiling Nurmgomedov, who is Muslim.
“Why did you remove Khabib from your plane? His fans need to know! I hope he sues you,” an Instagram user wrote on the airline’s most recent post.
“Are you aware of who Khabib is? His legacy surpasses that of the entire airline,” another chimed in.
“Shame on you, Alaska Airline. We all boycotting them,” a TikTok user added.
“What is the reason!? Because they don’t feel comfortable he’s sitting by a window?” another questioned.
Neither Nurmgomedov or Alaska Airlines have yet commented on the situation.
Alaska
Experts recommend preparing in case of Southcentral power outages as storm approaches
ANCHORAGE, Alaska (KTUU) – With a storm approaching and high winds in the forecast for a portion of Southcentral Alaska, experts recommend preparing for potential power outages and taking safety precautions.
Experts with the State of Alaska, Division of Homeland Security and Emergency Management recommended taking the initiative early in case of power outages due to strong weather.
Julie Hasquet with Chugach Electric in Anchorage said Saturday the utility company has 24/7 operators in case of outages.
“We watch the weather forecast, and absolutely, if there are power outages, we will send crews out into the field to respond,” Hasquet said.
She echoed others, saying it’s best to prepare prior to a storm and not need supplies rather than the other way around.
“With the winds that are forecast for tonight and perhaps into Sunday, people should just be ready that it could be some challenging times, and to be aware and cautious and kind of have your radar up,” Hasquet said.
For the latest weather updates and alerts, download the Alaska’s Weather Source app.
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Alaska
The 2025 Alaska Music Summit comes to Anchorage
ANCHORAGE, Alaska (KTUU) – More than 100 music professionals and music makers from Anchorage and across the state signed up to visit ‘The Nave’ in Spenard on Saturday for the annual Alaska Music Summit.
Organized by MusicAlaska and the Alaska Independent Musicians Initiative, the event began at 10 a.m. and invited anyone with interest or involvement in the music industry.
“The musicians did the work, right,” Marian Call, MusicAlaska program director said. “The DJ’s who are getting people out, the music teachers working at home who have tons of students a week for $80 an hour, that is real activity, real economic activity and real cultural activity that makes Alaska what it is.”
Many of the attendees on Saturday were not just musicians but venue owners, audio engineers, promoters and more, hence why organizers prefer to use the term “music makers.”
The theme for the summit was “Level Up Together” a focus on upgrading professionalism within the musicmaking space. Topics included things like studio production, promotion, stagecraft, music education policy.
“We’re kind of invisible if we don’t stand up for ourselves and say, ‘Hey, we’re doing amazing stuff,‘” Call said.
On Sunday, participants in the summit will be holding “office hours” at the Organic Oasis in Spenard. It is a time for music professionals to network, ask questions and share ideas on music and music making.
“You could add us to the list of Alaskan cultural pride,” Call said. “You could add us to your conception of being Alaskan. That being Alaskan means you wear Carhartts, and you have the great earrings by the local artisan, and you know how to do the hand geography and also you listen to Alaskan music proudly.”
The event runs through Sunday and will also be hosted in February in Juneau and Fairbanks.
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Copyright 2025 KTUU. All rights reserved.
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