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The Pacific Region has nine USGS Science Centers in California, Nevada, and Hawaii. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

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The Pacific Region has nine USGS Science Centers in California, Nevada, and Hawaii. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

News

Date published: March 1, 2021

Photo and Video Chronology – Kīlauea – March 1, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

Date published: February 25, 2021

Volcano Watch — When will Mauna Loa erupt next?

“When will Mauna Loa erupt next?” This was the title of a Volcano Awareness Month video presentation released by the USGS Hawaiian Volcano Observatory (HVO) in January 2021. This was also the topic of discussion among HVO scientists last...

Date published: February 25, 2021

Photo and Video Chronology – Kīlauea – February 25, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

Filter Total Items: 67
Date published: January 20, 2021
Status: Active

Low-lying areas of tropical Pacific islands

Sea level is rising faster than projected in the western Pacific, so understanding how wave-driven coastal flooding will affect inhabited, low-lying islands—most notably, the familiar ring-shaped atolls—as well as the low-elevation areas of high islands in the Pacific Ocean, is critical for decision-makers in protecting infrastructure or relocating resources and people.

Date published: January 20, 2021
Status: Active

Coral Reef Project

Explore the fascinating undersea world of coral reefs. Learn how we map, monitor, and model coral reefs so we can better understand, protect, and preserve our Nation's reefs.

Date published: January 15, 2021
Status: Active

Coral Reef Project: Hawaiʻi

As part of the USGS Coral Reef Project, the USGS is working on the Kona (west) coast of Hawaiʻi to evaluate geologic resources at two historical parks.

Date published: December 11, 2020
Status: Completed

Update of the Hawaii Seismic Hazard Model Workshop #2

Wednesday, November 18, 2019
Virtual Meeting

Date published: August 10, 2020
Status: Completed

Sea-Level Rise and Climate Change Impacts to Reefs

Learn how the USGS studies sea-level rise and climate change impacts to coral reefs.

Date published: July 20, 2020
Status: Active

The Value of U.S. Coral Reefs for Risk Reduction

Summary of the report, “Rigorously valuing the role of U.S. coral reefs in coastal hazard risk reduction”

    Contacts: Curt Storlazzi, PhD, Michael Beck
    Date published: February 13, 2020
    Status: Active

    Avian Malaria Genomic Research Project

    Habitat destruction, invasive plants, non-native predators and competitors, and introduced diseases have decimated the diverse, endemic native forest bird community of Hawai‘i. In particular, avian malaria (Plasmodium relictum), which is transmitted by the introduced Culex quinquefasciatus mosquito, has caused dramatic declines and extinctions in many native birds. Fortunately, Cx....

    Date published: December 19, 2019
    Status: Completed

    U.S. Seismic Hazard Maps – Hawaii

    Seismic hazard maps for Hawaii.

    Date published: November 8, 2019
    Status: Active

    Modeling invasion risk and impacts to inform management responses - Helen Sofaer

    Where are invasive species likely to be introduced or become abundant? How should managers respond? On Hawaii and other Pacific Islands numerous invasive species have altered ecosystems, and new species continue to be introduced. Statistical analyses can characterize risk and inform response strategies.

    Date published: November 8, 2019
    Status: Active

    Modeling invasion risk and impacts to inform management responses - Helen Sofaer

    Where are invasive species likely to be introduced or become abundant? How should managers respond? On Hawaii and other Pacific Islands numerous invasive species have altered ecosystems, and new species continue to be introduced. Statistical analyses can characterize risk and inform response strategies.

    Date published: October 28, 2019
    Status: Completed

    Update of the Hawaii Seismic Hazard Model Workshop #1

    Wednesday, September 18, 2019
    Honolulu, HI
    University of Hawaii at Manoa

    Date published: September 18, 2019
    Status: Active

    Coral Reef Project: Kauaʻi

    As part of the USGS Coral Reef Project, the USGS is working on the island of Kauaʻi to identify circulation patterns and a sediment budget for Hanalei Bay to help determine any effects to the coastal marine ecosystem.

    Filter Total Items: 88
    Date published: April 22, 2020

    Avian Malaria Warning System

    Data for this warning system is a compilation of NOAA NCDC Global Historical Climatology Network data, Dark Sky API 2-week forecast data, and calculated historical annual climatic averages based on the NOAA NCDC data. All data has been statistically adjusted for each individual site location based on collected site data. 

    Date published: February 18, 2020

    Cross-reef wave and water level data from coral reef environments

    Direct field observations of wave dynamics across coral reefs and the resulting water levels are limited. Here we provide direct in situ measurements of waves and water levels across a number of coral reefs, extending from the fore reef, across the reef crest, and to the shoreline. These measurements are provided to help better understand the evolution of waves across coral reefs and...

    Date published: September 26, 2019

    Kīlauea 2018 - lower East Rift Zone eruption and summit-collapse events

    This geonarrative summarizes Kīlauea’s 2018 events, highlighting the historical context and contributions to science.

    Date published: September 23, 2019

    Data from Bristle-Thighed Curlews at James Campbell National Wildlife Refuge, O'ahu, Hawaii, 2012-2014

    This data package includes two tables of data for Bristle-thighed curlews (Numenius tahitiensis) captured 2012-2014 on the James Campbell National Wildlife Refuge O'ahu, Hawaii (21.68 N, 157.95 W). One table provides capture, banding, morphology, and genetic data. The second table provides mark-resight data for estimating the size of the wintering population on Oahu in April of 2014.

    Date published: September 5, 2019

    Measurements Used to Determine the Sex of Bristle-thighed Curlews (Numenius tahitiensis)

    This data set contains bill and tarsal measurements from 114 Bristle-thighed Curlews, captured on breeding grounds in Alaska, and non-breeding areas in Hawaii and Reitoru atoll, French Polynesia.

    Date published: September 2, 2019

    Observations of coral reef oceanographic and groundwater properties off Makua, Kauai, HI, USA, August 2016

    This data release includes measurements of circulation and waves, profiles of seawater properties, and profiles of resistivity on the shoreline, which can be used to assess the potential for terrestrial groundwater intrusion on the reef and the sources and fate of these water masses. The recent discovery of coral Black Band Disease at Mākua Reef on Kauaʻi, Hawaiʻi prompted an investigation...

    Date published: August 29, 2019

    Waiakane, Molokai, HI, 2018 Coral Reef Circulation and Sediment Dynamics Experiment

    To better constrain the influence of sea-level rise on waves and sediment transport over a fringing coral reef flat, an experiment was conducted across a large fringing reef off the south shore of Molokai, Hawai’i. Here we provide data on water levels, waves, currents observed during this field effort. Additional data sets will be added as they become available.

    Date published: August 26, 2019

    Bristle-Thighed Curlew (Numenius tahitiensis) Mark-Resight Encounter History from the James Campbell National Wildlife Refuge and Surrounding Area, Oahu, Hawaii, 2012-2017

    This data set contains one table with mark-resight observations of Bristle-thighed Curlews marked on Oahu, Hawaii, with plastic color leg flags, 2012-2017.

    Date published: March 21, 2019

    Core logs, scans, photographs, grain size, and radiocarbon data from coastal wetlands on the Hawaiian islands of Kauaʻi, Oʻahu, and Hawaiʻi

    This data release supports a study that reports on efforts to estimate future tsunami inundation through stratigraphic analyses of potential tsunami deposits beneath present and former Hawaiian wetlands, coastal lagoons, and river floodplains.

    Date published: February 14, 2019

    Coral cover and health determined from seafloor photographs and diver observations, West Hawai'i, 2010-2011

    The data described here were collected as part of a larger study to examine habitat conditions and coral health with respect to exposure to submarine groundwater discharge (SGD) and urban land uses.

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    Color map of lava lake and volcano summit
    February 26, 2021

     

    February 26, 2021—Kīlauea summit eruption contour map showing lava lake level and elevations of features within the caldera

    Thermal map from February 16 overflight
    February 19, 2021

    February 16, 2021—Kīlauea summit eruption thermal map constructed from aerial imagery

    Color map of volcano summit and lava lake
    February 11, 2021

    February 11, 2021—Kīlauea summit eruption contour map showing lava lake level and elevations of features within the caldera

    A helicopter overflight on February 9, 2021, at approximately 9:20 a.m. HST
    February 10, 2021

    February 9, 2021—Kīlauea summit eruption thermal map constructed from aerial imagery

    This map of Halema‘uma‘u at the summit of Kīlauea shows 20 m (66 ft) contour lines
    February 5, 2021

    Kīlauea summit eruption contour map showing lava lake level and elevations of features within the caldera

    A helicopter overflight on February 1, 2021, at approximately 10:30 a.m. HST allowed for aerial visual and thermal imagery
    February 2, 2021

    February 1, 2021—Kīlauea summit eruption thermal map constructed from aerial imagery

    Kīlauea summit eruption contour map showing lava lake level and elevations of features within the caldera
    January 29, 2021

    Kīlauea summit eruption contour map showing lava lake level and elevations of features within the caldera

    Color map of volcano summit
    January 25, 2021

    January 25, 2021—Kīlauea summit eruption contour map showing lava lake level and elevations of features within the caldera

    This compilation shows nine thermal maps created for the ongoing eruption in Halema‘uma‘u, at the summit of Kīlauea
    January 13, 2021

    A compilation of nine thermal maps created for the ongoing eruption in Halema‘uma‘u, at the summit of Kīlauea.

    A helicopter overflight on January 12, 2021, at approximately 11:00 a.m. HST
    January 12, 2021

    January 12, 2021—Kīlauea summit eruption thermal map constructed from aerial imagery

    Thermal map from a helicopter overflight on January 7, 2021, at approximately 10:30 a.m. HST
    January 7, 2021

    January 7, 2021—Kīlauea summit eruption thermal map constructed from aerial imagery

    Color map of lava lake temperature
    January 6, 2021

    January 5, 2021—Kīlauea summit eruption thermal map constructed from aerial imagery

    Filter Total Items: 112
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    Year Published: 2020

    Seismic and geodetic progression of the 2018 summit caldera collapse of Kīlauea Volcano

    The 2018 eruption of Kīlauea volcano, Hawaiʻi, resulted in a major collapse of the summit caldera along with an effusive eruption in the lower East Rift Zone. The caldera collapse comprised 62 highly similar collapse cycles of strong ground deformation and earthquake swarms that ended with a magnitude 5 collapse event and one partial cycle that...

    Tepp, Gabrielle; Hotovec-Ellis, Alicia J.; Shiro, Brian; Johanson, Ingrid; Thelen, Weston; Haney, Matthew M.

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    Year Published: 2020

    Sedimentary evidence of prehistoric distant-source tsunamis in the Hawaiian Islands

    Over the past 200 years of written records, the Hawaiian Islands have experienced tens of tsunamis generated by earthquakes in the subduction zones of the Pacific "Ring of Fire" (e.g., Alaska-Aleutian, Kuril-Kamchatka, Chile, and Japan). Mapping and dating anomalous beds of sand and silt deposited by tsunamis in low-lying areas along Pacific...

    La Selle, Seanpaul; Richmond, Bruce M.; Jaffe, Bruce E.; Nelson, Alan; Griswold, Frances; Arcos, Maria E.M.; Chague, Catherine; Bishop, James M.; Bellanova, Piero; Kane, Haunani H.; Lunghino, Brent D.; Gelfenbaum, Guy R.

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    Year Published: 2020

    Organic geochemical investigation of far‐field tsunami deposits of the Kahana Valley, O'ahu, Hawai'i

    Far‐field tsunami deposits observed in the Kahana Valley, O'ahu, Hawai'i (USA), were investigated for their organic‐geochemical content. During short high‐energy events, (tsunamis and storms) organic and chemical components are transported with sediment from marine to terrestrial areas. This study investigates the use of anthropogenic based...

    Bellanova, Piero; Frenken, Mike; Richmond, Bruce M.; Schwarzbauer, Jan; La Selle, Seanpaul; Griswold, Frances; Jaffe, Bruce E.; Nelson, Alan R.; Reicherter, Klaus

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    Year Published: 2019

    Physicochemical controls on zones of higher coral stress where Black Band Disease occurs at Mākua Reef, Kauaʻi, Hawaiʻi

    Pervasive and sustained coral diseases contribute to the systemic degradation of reef ecosystems, however, to date an understanding of the physicochemical controls on a coral disease event is still largely lacking. Water circulation and residence times and submarine groundwater discharge all determine the degree to which reef organisms are exposed...

    Oberle, Ferdinand; Storlazzi, Curt D.; Cheriton, Olivia; Takesue, Renee K.; Hoover, Daniel J.; Logan, Joshua B.; Runyon, Christina M.; Kellogg, Christina A.; Johnson, Cordell; Swarzenski, Peter W.

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    Year Published: 2019

    Rigorously valuing the role of U.S. coral reefs in coastal hazard risk reduction

    The degradation of coastal habitats, particularly coral reefs, raises risks by increasing the exposure of coastal communities to flooding hazards. The protective services of these natural defenses are not assessed in the same rigorous economic terms as artificial defenses, such as seawalls, and therefore often are not considered in decision making...

    Storlazzi, Curt D.; Reguero, Borja G.; Cole, Aaron D.; Lowe, Erik; Shope, James B.; Gibbs, Ann E.; Nickel, Barry A.; McCall, Robert T.; van Dongeren, Ap R.; Beck, Michael W.
    Storlazzi, C.D., Reguero, B.G., Cole, A.D., Lowe, E., Shope, J.B., Gibbs, A.E., Nickel, B.A., McCall, R.T., van Dongeren, A.R., and Beck, M.W., 2019, Rigorously valuing the role of U.S. coral reefs in coastal hazard risk reduction: U.S. Geological Survey Open-File Report 2019–1027, 42 p., https://doi.org/10.3133/ofr20191027.

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    Year Published: 2018

    Honolulu Magnetic Observatory

    Tucked in a grove of thorny mesquite trees, on an ancient coral reef on the south side of the Hawaiian island of Oahu, west of Pearl Harbor, a small unmanned observatory quietly records the Earth’s time-varying magnetic field. The Honolulu Magnetic Observatory is 1 of 14 that the U.S. Geological Survey Geomag­netism Program operates at various...

    Love, Jeffrey J.; Finn, Carol
    Love, J.J., and Finn, C.A., 2018, Honolulu Magnetic Observatory: U.S. Geological Survey Fact Sheet 2018–3029, 2 p.

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    Year Published: 2018

    Groundwater-level, groundwater-temperature, and barometric-pressure data, July 2017 to February 2018, Hālawa Area, Oʻahu, Hawaiʻi

    The Red Hill Bulk Fuel Storage Facility, operated by the U.S. Navy and located in the Hālawa area, Oʻahu, Hawaiʻi, includes 20 underground storage tanks that can hold a total of 250 million gallons of fuel. In January 2014, the U.S. Navy notified the Hawaiʻi Department of Health and U.S. Environmental Protection Agency of release of an estimated...

    Mitchell, Jackson N.; Oki, Delwyn S.
    Mitchell, J.N., and Oki, D.S., 2018, Groundwater-level, groundwater-temperature, and barometric-pressure data, July 2017 to February 2018, Hālawa Area, O‘ahu, Hawai‘i: U.S. Geological Survey Open-File Report 2018–1147, 35 p., https://doi.org/10.3133/ofr20181147.

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    Year Published: 2018

    Volcanic aquifers of Hawai‘i—Hydrogeology, water budgets, and conceptual models

    Hawai‘i’s aquifers have limited capacity to store fresh groundwater because each island is small and surrounded by saltwater. Saltwater also underlies much of the fresh groundwater. Fresh groundwater resources are, therefore, particularly vulnerable to human activity, short-term climate cycles, and long-term climate change. Availability of fresh...

    Izuka, Scot K.; Engott, John A.; Rotzoll, Kolja; Bassiouni, Maoya; Johnson, Adam G.; Miller, Lisa D.; Mair, Alan
    Izuka, S.K., Engott, J.A., Rotzoll, Kolja, Bassiouni, Maoya, Johnson, A.G., Miller, L.D., and Mair, Alan, 2018, Volcanic aquifers of Hawai‘i—Hydrogeology, water budgets, and conceptual models (ver. 2.0, March 2018): U.S. Geological Survey Scientific Investigations Report 2015-5164, 158 p., https://doi.org/10.3133/sir20155164.

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    Year Published: 2018

    Spatially distributed groundwater recharge estimated using a water-budget model for the Island of Maui, Hawai`i, 1978–2007

    Demand for freshwater on the Island of Maui is expected to grow. To evaluate the availability of fresh groundwater, estimates of groundwater recharge are needed. A water-budget model with a daily computation interval was developed and used to estimate the spatial distribution of recharge on Maui for average climate conditions (1978–2007 rainfall...

    Johnson, Adam G.; Engott, John A.; Bassiouni, Maoya; Rotzoll, Kolja
    Johnson, A.G., Engott, J.A., Bassiouni, Maoya, and Rotzoll, Kolja, 2018, Spatially distributed groundwater recharge estimated using a water-budget model for the Island of Maui, Hawai`i, 1978–2007 (ver. 2.0, February 2018): U.S. Geological Survey Scientific Investigations Report 2014–5168, 53 p., https://doi.org/10.3133/sir20145168.

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    Year Published: 2017

    Rigorously valuing the role of coral reefs in coastal protection: An example from Maui, Hawaii, U.S.A.

    The degradation of coastal habitats, particularly coral reefs, raises risks by exposing communities to flooding hazards. The protective services of these natural defenses are not assessed in the same rigorous, economic terms as artificial defenses such as seawalls, and therefore often not considered in decision-making. Here we present a new...

    Storlazzi, Curt D.; Reguero, Borja G.; Lowe, Erik; Shope, James B.; Gibbs, Ann E.; Beck, Mike; Nickel, Barry A.
    Storlazzi, C.D., Reguero, B., Lowe, E., Shope, J.B., Gibbs, A.E., Beck, M.W., and Nickel, B., 2017. “Rigorously valuing the role of coral reefs in coastal protection: An example from Maui, Hawaii, U.S.A.” Coastal Dynamics 2017, p. 665-674.

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    Year Published: 2017

    Measuring surface-water loss in Honouliuli Stream near the ‘Ewa Shaft, O‘ahu, Hawai‘i

    The Honolulu Board of Water Supply is currently concerned with the possibility of bacteria in the pumped water of the ‘Ewa Shaft (State well 3-2202-21). Groundwater from the ‘Ewa Shaft could potentially be used to meet future potable water needs in the ‘Ewa area on the island of O‘ahu. The source of the bacteria in the pumped water is unknown,...

    Rosa, Sarah N.
    Rosa, S.N., 2017, Measuring surface-water loss in Honouliuli Stream near the ‘Ewa Shaft, O‘ahu, Hawai‘i: U.S. Geological Survey Scientific Investigations Report 2017–5042, 14 p., https://doi.org/10.3133/sir20175042.

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    Year Published: 2017

    Pufferfish mortality associated with novel polar marine toxins in Hawaii

    Fish die-offs are important signals in tropical marine ecosystems. In 2010, a mass mortality of pufferfish in Hawaii (USA) was dominated by Arothron hispidus showing aberrant neurological behaviors. Using pathology, toxinology, and field surveys, we implicated a series of novel, polar, marine toxins as a likely cause of this mass mortality. Our...

    Work, Thierry M.; Moeller, Perer D. R.; Beauchesne, Kevin R.; Dagenais, Julie; Breeden, Renee; Rameyer, Robert; Walsh, Willliam A.; Abecassis, Melanie; Kobayashi, Donald R.; Conway, Carla M.; Winton, James

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    multicolored map of Ocean Shores, Washington
    April 13, 2017

    The Pedestrian Evacuation Analyst is an ArcGIS extension that estimates how long it would take for someone to travel on foot out of a hazardous area that was threatened by a sudden event such as a tsunami, flash flood, or volcanic lahar. It takes into account the elevation changes and the different types of landcover that a person would encounter along the way.

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    The lava lake in Halema‘uma‘u crater, at the summit of Kīlauea, remains active
    March 2, 2021

    Halema‘uma‘u lava lake, Kīlauea summit eruption—March 3, 2021

    The lava lake in Halema‘uma‘u crater, at the summit of Kīlauea, remains active. Lava is entering the lake at a small inlet along the western lake margin, at the site of the western fissure. Active surface lava remains limited to the western portion of the lake. Scattered crustal foundering and small overflows were present on Tuesday, March 2, 2021. USGS photo by M. Patrick

    ...
    The western fissure in Halema‘uma‘u remains active, with incandescence visible in two small vent openings
    March 2, 2021

    Halema‘uma‘u lava lake, Kīlauea summit eruption—March 3, 2021

    The western fissure in Halema‘uma‘u remains active, with incandescence visible in two small vent openings. The northeastern incandescent vent opening (right) has a narrow, drained lava channel extending down the flank of the cone. USGS photo taken by M. Patrick on March 2, 2021.

    Close-up view of the western fissure in Halema‘uma‘u, showing the incandescent lava upwelling at the inlet
    March 2, 2021

    Halema‘uma‘u lava lake, Kīlauea summit eruption—March 3, 2021

    Another close-up view of the western fissure in Halema‘uma‘u, showing the incandescent lava upwelling at the inlet zone along the western lake margin. This photo was taken on March 2, 2021, in an area of Hawai‘i Volcanoes National Park that remains closed to the public due to safety reasons. USGS photo by M. Patrick.

    The eastern portion of the lava lake in Halema‘uma‘u remains solidified at the surface
    March 2, 2021

    Halema‘uma‘u lava lake, Kīlauea summit eruption—March 3, 2021

    The eastern portion of the lava lake in Halema‘uma‘u remains solidified at the surface. Numerous islands, previously drifting in the lake currents, are now locked in place. The remnants of a section of Crater Rim Drive, from the 2018 summit collapse, is visible in the lower right corner of the photo. USGS photo taken by M. Patrick on March 2, 2021.

    Color photograph of lava lake
    February 26, 2021

    February 26, 2021 — Kīlauea

    On the afternoon of Friday February 26, 2021, the active west side of the lava lake at Halema‘uma‘u, Kīlauea Volcano, Hawaii, had numerous surface breakouts and foundering crust amid vigorous steaming due to the heavy rainfall. This view is looking to the east from the west side of the crater. At the base of the west vent lava was effusing at the lake level. There was no

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    Color photograph of lava lake and rainbow
    February 26, 2021

    February 26, 2021 — Kīlauea

    Heavy rains at the summit of Kīlauea Volcano (Hawaii) cleared on the afternoon of Friday, February 26, 2021, to show the steaming surface of the lava lake at Halema‘uma‘u viewed from the west. A rainbow arches over the lake looking east across the crater toward Kīlauea Iki. This photo was taken within an area of Hawai‘i Volcanoes National Park that remains closed to the

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    Color map of lava lake and volcano summit
    February 26, 2021

    February 26, 2021—Kīlauea summit eruption contour map

    This map of Halema‘uma‘u at the summit of Kīlauea shows 20 m (66 ft) contour lines (dark gray) that mark locations of equal elevation above sea level (asl). The map shows that the lava lake has filled 218 m (715 ft) of the crater, to an elevation of 735 m (2411 ft) asl since the eruption began at approximately 9:30 p.m. HST on December 20, 2020. Contour lines highlighted

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    color photograph of lava flow
    February 24, 2021

    Close-up view of active lava flow Halema‘uma‘u, February 24, 2021

    In the morning of Tuesday, February 23, a new source of spatter appeared on flank of the active western fissure within Halema‘uma‘u at the summit of Kīlauea. It started to feed a short lava flow down the spatter cone and onto the crusted northwest margin of the lava lake. A field crew on Wednesday observed the flow to be active, and captured this photo through the lens of

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    Color photograph of lava lake
    February 24, 2021

    View of Halema‘uma‘u lava lake from the west, February 24, 2021

    On Wednesday, February 24, HVO scientists observed the Kīlauea summit eruption in Halema‘uma‘u from the west rim of the crater. In this photo, the active western fissure is marked by an incandescent skylight on the near side of the lava lake. A plume of sulfur dioxide and other volcanic gases rises constantly from the fissure as it effuses lava into the lake, which

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    Color photograph of lava flow
    February 24, 2021

    Eruption in Halema‘uma‘u crater - February 24, 2021

    A telephoto image of the small lava flow from the western fissure within Halema‘uma‘u, at the summit of Kīlauea. Occasional incandescence was visible (center) from the weakly active flow on the northwestern lava lake levee. A portion of the active lava lake is visible in the lower-right. This photo was taken within an area of Hawai‘i Volcanoes National Park that remains

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    Color photograph of lava lake
    February 23, 2021

    View of active portion of lava lake in Halema‘uma‘u - Kīlauea, Feb. 23

    The lava lake in Halema‘uma‘u crater, at the summit of Kīlauea, remains active. Active surface lava remains limited to the western portion of the lake, shown here as seen from the south rim of the crater and looking towards the northwest. The western fissure cone is in the center of the photo. The top of the main cone is obscured by volcanic gases, and a small glow area is

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    Color photograph of volcanic vent and lava lake
    February 22, 2021

    February 22, 2021 — Kīlauea

    This photo shows a view of the western fissure, feeding the lava lake in Halema‘uma‘u at the summit of Kīlauea. The inlet zone, where lava is entering the lake, is visible at the bottom of the photo. Near the center of the photo, an area of lava driblets can be seen running down the flank of the western fissure's cone. USGS photo by M. Patrick.

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    Color photograph of lava lake and rainbow
    March 1, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    Map of post-1823 lava flows erupted from Mauna Loa (gray) and numbe...
    February 25, 2021

    “When will Mauna Loa erupt next?” This was the title of a Volcano Awareness Month video presentation released by the USGS Hawaiian Volcano Observatory (HVO) in January 2021. This was also the topic of discussion among HVO scientists last week following the detection of slight changes in ground deformation and seismicity at the summit of Mauna Loa. 

    color photograph of lava flow
    February 25, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    Color photograph of lava lake
    February 24, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    February 22, 2021 — Kīlauea
    February 23, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    HVO geologists use a laser rangefinder to measure the distance to the Halema‘uma‘u lava lake
    February 22, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    On the February 16 helicopter overflight, thermal imagery of the Halema‘uma‘u lava lake was collected
    February 19, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    USGS science for a changing world
    February 18, 2021

    The USGS recently published "Unoccupied Aircraft Systems (UAS) video of the 2018 lower East Rift Zone eruption of Kīlauea Volcano, Hawaii." The Data Release contains UAS footage from the 2018 eruption of Kīlauea Volcano’s lower East Rift Zone, on the Island of Hawai‘i. A subset of the videos collected were used for monitoring the fissure 8 lava channel and for measuring flow velocities.

    USGS science for a changing world
    February 18, 2021

    A new chapter of USGS Professional Paper 1867, "The 2008–2018 Summit Lava Lake at Kīlauea Volcano, Hawai‘i" was recently published online. The 2008–2018 lava lake at the summit of Kīlauea marked the longest sustained period of lava lake activity at the summit in decades and provided a new opportunity for observing and understanding lava lake behavior.

    Unoccupied Aircraft Systems (UAS) photo from Tuesday, Feb. 9, shows the stagnant, crusted-over eastern portion of the lava lake
    February 18, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    This thermal image taken during the February 1 helicopter overflight shows the features of the lava lake in Halema‘uma‘u
    February 18, 2021

    Kīlauea’s current lava lake formed on December 20th and rose rapidly within Halema‘uma‘u crater during the dynamic first week of the ongoing summit eruption. Near the end of December, the eruption stabilized and the lava lake has been slowly changing since then.

    Overflight photo of erupting western fissure in Halema‘uma‘u, February 16, 2021
    February 17, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

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