Episodios

  • Unlocking Earth's Secrets: New Geologic Insights Across the U.S. Uncover Earthquake and Landslide Risks

    Unlocking Earth's Secrets: New Geologic Insights Across the U.S. Uncover Earthquake and Landslide Risks
    Jan 10 2026
    Across the United States, geologists are opening the new year with fresh insight into how the ground beneath us behaves, and what that means for people living on it. The Utah Geological Survey reports that new high resolution light detection and ranging mapping has revealed a far more complex network of active faults in central Utah than previously recognized, including in rapidly growing counties such as Sanpete, Sevier, and Millard, sharpening estimates of where strong earthquakes could strike next. According to the Survey, using light detection and ranging allows geologists to see through vegetation and pick out subtle fault scarps formed by past large earthquakes, improving hazard maps that guide building codes and infrastructure planning.

    Farther east, a January issue of GSA Today from the Geological Society of America details how geologists mapped thousands of landslides triggered by Hurricane Helene in the southern Appalachian Mountains, producing an emergency landslide hazard map while the disaster was still unfolding. That work is now being used to refine long term assessments of slope stability and to identify communities at highest risk in future extreme rainfall events.

    In Yellowstone National Park, the United States Geological Survey highlights the top geologic developments of the past year in its January Yellowstone update, noting that the park experienced more than one thousand earthquakes in twenty twenty five, on the low end of average, but with notable ground deformation that scientists will watch closely in twenty twenty six, along with continued but declining activity at Steamboat Geyser and new hydrothermal features that testify to the restless magma system below.

    On the volcanic front in Hawaii, the Hawaiian Volcano Observatory reflects on thirty eight episodes of lava fountaining at Kilauea summit over the past year and uses Volcano Awareness Month events to underscore how quickly hazards can change on an active shield volcano and how essential public preparedness remains.

    Beyond the United States, global monitoring by Volcano Discovery shows that in just one recent day, January ninth, twenty twenty six, the largest earthquakes reached magnitude five point six in the Coral Sea near Vanuatu, with additional magnitude five events in New Zealand and along the Pacific Rim, illustrating that most significant seismic energy release continues to concentrate along plate boundaries, while interior regions like much of the United States rely on detailed mapping and geologic sleuthing to understand quieter but still dangerous faults.

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  • Yellowstone Volcano Remains Stable, Utah Faults Revealed, and Induced Seismicity Trends Highlighted in Geologic Roundup

    Yellowstone Volcano Remains Stable, Utah Faults Revealed, and Induced Seismicity Trends Highlighted in Geologic Roundup
    Jan 7 2026
    In early January 2026, the United States Geological Survey released its Yellowstone Volcano Observatory monthly update, highlighting ongoing geological activity in Yellowstone National Park, Wyoming. Yellowstone Caldera remains at normal alert levels, with 79 located earthquakes in December 2025, the largest measuring magnitude 2.7. Subtle uplift of two to three centimeters along the north caldera rim, south of Norris Geyser Basin, began in July 2025 and continues, resembling patterns from 1996 to 2004, according to continuous GPS and satellite radar measurements by the USGS. Within the caldera, long-term subsidence since 2015 paused, with up to two centimeters of uplift since May 2025, possibly signaling a shift from subsidence or an extended seasonal effect.

    Hydrothermal features dominated 2025's top stories, per the USGS Yellowstone monthly update for January 2026. Black Diamond Pool in Biscuit Basin saw at least three small eruptions on December 8, 18, and 20, 2025, captured by new camera and infrasound monitoring following a 2024 explosion. Steamboat Geyser in Norris Geyser Basin, the world's tallest active geyser, erupted for the third time in 2025 on December 31 just after 10 p.m. Mountain Standard Time, marking a decline from prior active phases.

    Elsewhere in the US, the Utah Geological Survey announced on January 5, 2026, new high-resolution maps revealing active faults in central Utah's rural areas. These faults, which have ruptured the surface within the past 2.6 million years, highlight growing earthquake risks amid rapid development beyond the Wasatch Front.

    A USGS report notes human-induced earthquakes from oil and gas operations have reshaped seismic patterns nationwide, increasing tremors in regions like Oklahoma and Texas. High Country News's January 2026 issue explores deep geologic time in the West, linking ancient events like the Arizona Meteor Crater asteroid impact to Grand Canyon formation and plate tectonics insights from scientist Tanya Atwater on the San Andreas Fault in California.

    These developments underscore Yellowstone's dynamic hydrothermal and seismic baseline, emerging fault clarity in Utah, and induced seismicity trends, with no signs of escalation beyond normal variability. Globally, a massive hydrothermal field off Greece stunned scientists in late December 2025, but US patterns emphasize steady monitoring amid human influences.

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  • Yellowstone Dominates USGS Top Geological Stories of 2025: Seismic Activity, Geyser Eruptions, and Hydrothermal Wonders Revealed

    Yellowstone Dominates USGS Top Geological Stories of 2025: Seismic Activity, Geyser Eruptions, and Hydrothermal Wonders Revealed
    Jan 3 2026
    The United States Geological Survey released its top five geological stories from 2025 this week, providing a comprehensive overview of dynamic activity across American volcanic regions. Yellowstone National Park dominated the report with several significant developments. The park experienced 1,136 earthquakes throughout 2025, keeping seismic activity at background levels. Most notably, ground deformation began occurring in July in an area south of Norris Geyser Basin along the north caldera rim, where satellite radar and GPS data detected uplift of two to three centimeters. Scientists note this deformation pattern persisted through the end of the year and may represent a transition to a new form of deformation in the region, similar to patterns observed from 1996 to 2004.

    Steamboat Geyser, the world's tallest geyser located in Norris Geyser Basin, erupted only three times during 2025, with the final eruption occurring on December 31st just after ten PM Mountain Standard Time. This continues a declining trend from its peak activity between 2018 and 2020, when it erupted 48 times per year. Scientists expect this phase of activity to continue declining throughout 2026 as the geyser gradually returns to dormancy.

    The report also highlighted significant hydrothermal activity across Yellowstone, with several new thermal features emerging throughout the year. In Biscuit Basin, where a hydrothermal explosion occurred in July 2024, new monitoring equipment captured multiple eruptions at Black Diamond Pool. At least three small eruptions were recorded in December alone on the eighth, eighteenth, and twentieth, detected through both camera monitoring and acoustic sensing technology. The USGS emphasized that Black Diamond Pool remains highly active despite its explosive history.

    A notable rumor dispelled by the USGS concerned claims that animals were fleeing Yellowstone National Park. Scientists found no credible evidence supporting such migration patterns. The report stressed that Yellowstone remains a geologically dynamic region where features regularly turn on and off, creating natural variations that sometimes fuel unfounded speculation.

    In Hawaii, the Hawaiian Volcano Observatory reported that 2025 was a historic year for volcanic activity on the Island of Hawaii. Thirty-eight episodes of lava fountaining occurred at Kīlauea's summit, underscoring the active volcanic landscape residents and visitors navigate throughout the islands. These developments highlight how American volcanic regions continue providing scientists with opportunities to monitor and understand critical geological processes shaping our landscape.

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  • Earthquakes, Volcanoes, and Climate Change: Geologists Tackle Earth's Transformations

    Earthquakes, Volcanoes, and Climate Change: Geologists Tackle Earth's Transformations
    Dec 24 2025
    Geologists in the United States have focused closely this week on rapid landscape change driven by both earthquakes and volcanoes, as well as new insights into long term climate and resource risks. In Alaska, the United States Geological Survey reports that a magnitude seven point zero earthquake beneath Hubbard Glacier on December sixth triggered hundreds of landslides and snow avalanches across the Saint Elias Mountains, spanning southeast Alaska and into Canada. Preliminary remote sensing and a Yukon Geological Survey reconnaissance flight show slopes stripped of snow and rock, highlighting how seismic shaking in glaciated terrain can rapidly remodel valley walls and potentially dam streams or alter sediment delivery downstream.

    Farther south in Hawaii, the United States Geological Survey Hawaiian Volcano Observatory continues to track the ongoing summit eruption of Kilauea. A new map released December twenty second shows that lava within Halemaumau crater now averages about sixty eight meters thick, with maximum thickness exceeding one hundred sixty meters, filling nearly four hundred hectares of the summit basin. A monitoring overflight on December second captured spattering lava deep in the north vent and bright yellow native sulfur deposits produced by degassing sulfur dioxide and hydrogen sulfide. These measurements document how quickly magma is rebuilding the summit floor that collapsed in twenty eighteen, offering a real time laboratory for understanding caldera infilling and gas driven mineral formation.

    On the continental United States mainland, concern is rising over the stability of land and water resources. A recent Geological Society of America news release highlights that parts of the Willcox Basin in southern Arizona are sinking rapidly due to groundwater withdrawal, with subsidence threatening infrastructure and altering drainage. At the same time, another GSA release warns that drainage from abandoned coal mines could represent a significant and under counted source of carbon emissions, linking classic economic geology with climate change science.

    Looking at Earths future, ScienceDaily reports new research identifying a missing feedback in the global carbon cycle that could cause warming driven by fossil fuel emissions to overshoot and, paradoxically, help push the planet toward a future ice age on geologic time scales. In Washington, the Interior Department and the United States Geological Survey have issued an expanded twenty twenty five critical minerals list, now including sixty minerals such as copper, uranium, metallurgical coal, and phosphate, underscoring how geologic supply, national security, and clean energy transitions are tightly intertwined. Worldwide, major conferences from the American Geophysical Union meeting in New Orleans to international geology and geophysics gatherings in Europe, Asia, and Africa are weaving these themes together, emphasizing that from sudden earthquakes to slow subsidence, geology remains central to understanding and managing a changing planet.

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  • Boosting Domestic Minerals, Monitoring Volcanic Risks, and Coastal Resilience: Evolving U.S. Geological Priorities

    Boosting Domestic Minerals, Monitoring Volcanic Risks, and Coastal Resilience: Evolving U.S. Geological Priorities
    Dec 17 2025
    The United States Geological Survey issued its final 2025 List of Critical Minerals on November seventh, expanding the roster to sixty key materials essential for national security, supply chains, and industry. According to the USGS announcement, this update responds to the Energy Act of 2020 and incorporates executive orders on unleashing American energy and reinvigorating clean coal, adding uranium, metallurgical coal, potash, silicon, copper, silver, rhenium, lead, and retaining boron, arsenic, tellurium, and phosphate after interagency reviews from Defense, Energy, Agriculture, and others. The methodology, detailed in USGS Open-File Report 2025-1047, analyzed over twelve hundred disruption scenarios across eighty-four commodities and four hundred two industries, prioritizing economic impacts from foreign trade risks and single-point domestic failures. Interior Secretary emphasized the list's dynamic nature, with biennial updates planned based on supply shifts, demand, and policy.

    In Hawaii, Kilauea volcano's summit eruption paused as of December seventeenth, per the USGS Hawaiian Volcano Observatory notice. Intermittent glow persists in the south vent of Halemaumau crater, with tremor spikes, following spattering lava observed deep in the north vent on December second during an overflight. Yellow sulfur deposits surround the vents, formed when sulfur dioxide and hydrogen sulfide gases react and cool at the surface, as captured in USGS video by geologist K. Mulliken. Eruption activity continued through December sixteenth, highlighting ongoing monitoring in the islands.

    A UMass Amherst and Massachusetts Geological Survey study released December sixteenth reveals ocean sediments are vital for northeastern United States salt marshes to survive sea-level rise. Researchers describe it as a wake-up call on oceans' role in delivering sediments that help marshes keep pace with rising waters along coasts from Maine to Virginia.

    At the American Geophysical Union Annual Meeting in New Orleans this week, volcanologist Pavel Izbekov from the Alaska Volcano Observatory presented research on crystal clusters in magma from Bogoslof volcano's 2016-2017 eruptions. Diffusion chronometry in clinopyroxene, plagioclase, and amphibole crystals dated a critical decompression event to early March 2017, matching seismic and sulfur dioxide spikes, offering a new tool to forecast eruptions by reading magma history in mineral zones.

    These developments underscore emerging patterns: bolstered domestic mineral strategies amid global risks, persistent volcanic hazards in the Pacific, coastal resilience tied to ocean dynamics, and advancing crystal-based eruption predictions, all shaping United States geology priorities.

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  • Volcanic Unrest and Major Earthquake Shake Up US Geologic Landscape

    Volcanic Unrest and Major Earthquake Shake Up US Geologic Landscape
    Dec 13 2025
    In the past week, geological activity in the United States has centered on volcanic unrest and a major earthquake, highlighting ongoing hazards in volcanic hotspots and tectonically active regions. Kilauea volcano on Hawaii's Big Island continues its summit eruption, which began last December and remains active. U.S. Geological Survey reports from December 13 indicate the eruption paused after episode 38, with models forecasting episode 39 between December 22 and 27. Precursory lava overflows could start anytime from vents in Halemaumau crater, where inflation rates and gas pistoning signal building pressure. On December 2, observatory overflights captured spattering lava deep in the north vent, surrounded by yellow native sulfur deposits formed from reacting volcanic gases. The volcano alert level stays at watch, with east rift zone emissions low.

    Across the Pacific in Alaska, Great Sitkin volcano on the Aleutian Islands maintains its continuing eruption, as detailed in Volcano Discovery's December 12 update. Low-level explosive and effusive activity persists, producing ash plumes and lava flows, consistent with patterns at this remote hotspot volcano since 2021.

    Yellowstone Volcano Observatory's December update contrasts these events with the Yellowstone Caldera system's normal background activity. November saw 251 earthquakes, the largest magnitude 3.2, amid slight subsidence and diminished Steamboat Geyser activity. Both Kilauea and Yellowstone stem from fixed hotspots driving magma plumes, but oceanic crust in Hawaii allows fluid basaltic eruptions, while thick continental crust at Yellowstone favors explosive rhyolitic events.

    A significant seismic event struck on December 6, when a magnitude 7.0 oblique-slip earthquake hit 6 miles below Hubbard Glacier in Alaska's St. Elias Mountains, 55 miles north of Yakutat. U.S. Geological Survey notes it triggered landslides and snow avalanches, underscoring risks in glaciated terrains prone to rapid mass wasting.

    Emerging patterns reveal steady unrest at U.S. hotspots, with Kilauea episodes accelerating and Alaska facing compounded volcanic-seismic threats. Globally, 44 volcanoes show continuing eruptions per the Smithsonian USGS Weekly Volcanic Activity Report ending December 9, but U.S. sites dominate recent domestic headlines, emphasizing vigilant monitoring amid climate-influenced glacier dynamics and mineral resource shifts like the USGS expanded 2025 critical minerals list including uranium and metallurgical coal.

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  • Volcanic Unrest in Hawaii and Alaska: Geologists Monitor Critical Minerals and Global Geological Shifts

    Volcanic Unrest in Hawaii and Alaska: Geologists Monitor Critical Minerals and Global Geological Shifts
    Dec 6 2025
    In the United States, geologists are closely watching Hawaii, where the US Geological Survey Hawaiian Volcano Observatory reports renewed inflation and gas driven tremor beneath the summit of Kilauea volcano on the Island of Hawaii. According to the observatorys December 5 daily update, lava remains visible in both the north and south vents within Halemaumau crater, with vigorous spattering and gushing gas flames indicating magma standing high in the conduit, and models suggest the next eruptive fountain episode, numbered thirty eight in the current sequence, is likely to begin between December six and eight. A December two monitoring overflight documented incandescent lava deep in the north vent and bright yellow native sulfur deposits forming around the vents as sulfur rich gases cool at the surface, underscoring the intense degassing that continues even between major outbursts, as shown in video released by the survey this week.

    Farther north in Alaska, the US Geological Survey and Volcano Discovery report that Great Sitkin volcano in the Aleutian arc continues its low level eruption, with slow lava effusion building a thick lava dome in the summit crater and occasional small explosions sending ash a short distance from the vent, a reminder that the North Pacific remains one of the most volcanically active air routes on Earth. These parallel activities at Kilauea and Great Sitkin fit into a broader global pattern summarized in the most recent Smithsonian Institution Global Volcanism Program weekly report, which lists twenty nine volcanoes worldwide with confirmed eruptions in the week ending December two, including frequently active systems such as Etna in Italy, Merapi in Indonesia, and Popocatepetl in Mexico, demonstrating that roughly forty to fifty volcanoes are typically in intermittent eruption at any given time.

    Beyond active volcanism, new research emerging this week in outlets such as Science Daily highlights how ancient geological records inform present day hazards. One study uses three point three billion year old zircon crystals to show that Earths early crust and mantle were far more dynamic than once thought, implying that modern style plate tectonics and the recycling of crustal material began very early in our planets history, which helps explain why todays continents host rich ore deposits, geothermal systems, and long lived fault zones. In the American Southwest, recent Geological Society of America communications on land subsidence in Arizonas Willcox Basin, driven by intensive groundwater withdrawal, are resonating with current concerns over how human activity is reshaping the geology of arid regions, effectively lowering land surfaces and subtly altering local seismic and flooding risk.

    In New Mexico, New Mexico Tech announced on December three that it and the state Bureau of Geology have received a two point five million dollar United States Department of Energy grant to establish a research hub for critical minerals, reflecting a strategic shift in United States geoscience toward locating, characterizing, and responsibly extracting elements like lithium, rare earth elements, and copper that are essential for renewable energy technologies and national security. Mining News North reports that United States Geological Survey leadership is simultaneously championing domestic exploration for these critical minerals, pointing to a newly updated 2025 national critical minerals list that now includes sixty minerals and materials considered vital to the economy and defense, a move that ties subsurface mapping, structural geology, and geochemistry directly to energy transition policy.

    Internationally, the Geological Society of London and partners hosted an early December conference on the global challenge of sand mining, emphasizing that sand, after water, is the planets most used resource and that unregulated extraction from rivers and coasts is reshaping landscapes, accelerating erosion, and altering sediment delivery to deltas. At the same time, upcoming meetings like the International Conference on Geology and Climate Change in Bukhara, Uzbekistan and the American Geophysical Unions annual gathering in New Orleans underscore how geologists are increasingly focused on how Earth processes, from volcanoes to groundwater depletion, interact with climate change, infrastructure, and resource demand, with research in the United States providing a significant share of the data and models guiding that global conversation.

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  • Heightened Volcanic Activity and Shifting Subsurface Dynamics Across the United States

    Heightened Volcanic Activity and Shifting Subsurface Dynamics Across the United States
    Nov 29 2025
    Recent geological events across the United States reveal heightened volcanic activity and significant shifts in Earth's subsurface dynamics. Hawaii's Kilauea volcano remains at the center of attention, with Episode 37 of its ongoing Halemaʻumaʻu eruption beginning on November 25th. The eruption features sustained lava fountains approximately 400 feet in height erupting from the north vent, with fountain heights increasing rapidly. According to the Hawaiian Volcano Observatory, past episodes have produced incandescent lava fountains exceeding 1000 feet high that generate eruptive plumes reaching 20,000 feet above ground level. The observatory noted that winds are blowing from the northeast direction, suggesting volcanic gas emissions and material may distribute toward the southwest. Seismic tremor increased significantly before this episode began, and summit tilt switched from inflation to deflation. The aviation color code for Kilauea remains at Orange, indicating heightened volcanic activity.

    In the western continental United States, volcano monitoring networks detected important changes at multiple sites. California's monitored volcanoes including Mount Shasta show normal background earthquake activity and deformation patterns. Meanwhile, the Cascade Range experienced a shift when eruptive activity paused following the end of lava fountaining on Tuesday, November 25th. Scientists observed moderate glow from the south vent overnight along with tremor spikes suggesting gas pistoning at depth within the vents.

    Yellowstone Caldera in Wyoming presents a different geological story. According to the Yellowstone Volcano Observatory's November monitoring update, caldera activity remains at background levels with 180 located earthquakes in October, the largest measuring magnitude 3.7. Four distinct earthquake swarms occurred throughout the month, with one swarm near Mammoth Hot Springs producing 42 earthquakes during late October. More significantly, continuous GPS stations recorded the resumption of long-term subsidence in mid-October after the seasonal deformation signal ended. This subsidence has been ongoing since 2015, indicating Yellowstone's continued geological dynamism despite stable surface conditions.

    Beyond the continental United States, an undersea volcano near Oregon shows signs of impending eruption. Axial volcano's surface has ballooned to nearly the same height as it reached before its last eruption in 2015, a sign that magma has accumulated underground and built pressure. Scientists describe this development as a significant forecasting success, with increased seismic activity indicating moving magma beneath the seafloor.

    These concurrent volcanic and seismic events underscore the dynamic nature of North American geology and the critical importance of continued monitoring to understand Earth's evolving subsurface processes.

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