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Hawaii

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: April 13, 2021

Photo and Video Chronology – Kīlauea – April 13, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 226 m (741 ft) deep this morning, April 13. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission...

Date published: April 9, 2021

New USGS Data Release — Crater geometry data for Puʻuʻōʻō, on Kīlauea Volcano’s East Rift Zone, in May 2018

The USGS recently published a data release that includes a three-dimensional model of Puʻuʻōʻō, on Kīlauea's East Rift Zone, and the collapse crater, constructed from aerial thermal images collected on 11 May 2018.  Structure-from-motion processing was used to create the model from the sequence of oblique images, and ground control using kinematic GPS was used to georegister the model.   

Date published: April 9, 2021

Photo and Video Chronology – Kīlauea – April 9, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 225 m (738 ft) deep this morning, April 9. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission....

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Date published: March 26, 2021
Status: Active

Coral Reef Project: Maui

As part of USGS Coral Reef Project studies, the USGS has been heavily involved in efforts to improve the health and resilience of Maui's coral reef system, bringing expertise in mapping, circulation and sediment studies, and seismic surveys.

Date published: March 26, 2021
Status: Active

Coral Reef Project: Molokaʻi

As part of the USGS Coral Reef Project, recent USGS work on Molokaʻi includes looking into the coral record to find clues to past sedimentation events.

Date published: January 27, 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 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 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.

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    Date published: March 26, 2021

    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: 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: 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 at volcano summit
    April 6, 2021

    April 5, 2021—Kīlauea summit eruption contour map showing lava lake level and elevations of features within the caldera

    Color map of lava lake at volcano summit
    March 29, 2021

     

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

    Color map of lava lake temperature
    March 28, 2021

    March 26, 2021—Kīlauea summit eruption thermal map constructed from aerial imagery

    Color map of lava lake at volcano summit
    March 12, 2021

    March 12, 2021—Kīlauea summit eruption contour map showing lava lake level and elevations of features within the caldera

    Color animated gif of lava lake rise
    March 9, 2021

    ANIMATED GIF: This animated image file (GIF) includes a series of thermal maps—ranging from daily to several weeks apart—made from helicopter overflight thermal imagery of Halema‘uma‘u crater, Kīlauea summit.

    Maps showing lava lake growth
    March 8, 2021

    HVO uses regular Kīlauea summit helicopter overflights of Halema‘uma‘u crater to create digital elevation models (DEMs) of the crater.

    Color map of lava lake depth
    March 8, 2021

    Data from a Kīlauea summit helicopter overflight on March 4th allowed for the calculation of the depth of the lava in Halema‘uma‘u crater. 

    March 5, 2021—Kīlauea summit eruption contour map showing lava lake level and elevations of features within the caldera
    March 5, 2021

    March 5, 2021—Kīlauea summit eruption contour map showing lava lake level and elevations of features within the caldera

    A helicopter overflight on March 4, 2021, allowed for aerial visual and thermal imagery to be collected of the eruption
    March 5, 2021

    March 4, 2021—Kīlauea summit eruption thermal map constructed from aerial imagery

    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

    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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    Lava continues to erupt from the west vent in Halema‘uma‘u crater at Kīlauea Volcano's summit
    April 9, 2021

    Halema‘uma‘u eruptive activity on April 9, 2021

    Lava continues to erupt from the west vent in Halema‘uma‘u crater at Kīlauea Volcano's summit. This photo of the vent and active western portion of the lava lake was taken around 3:00 p.m. HST from the south rim of Halema‘uma‘u crater. USGS photo taken by K. Lynn on April 9, 2021.

    Lava erupting from the west vent in Halema‘uma‘u crater emerged from a second source closer to the vents base
    April 9, 2021

    Halema‘uma‘u eruptive activity on April 9, 2021

    On Friday, lava erupting from the west vent in Halema‘uma‘u crater emerged from a source closer to the vents base (center), a few feet away from the submerged effusive inlet that has been feeding the lava lake for several weeks (lower right). This photo was taken from the south rim of Halema‘uma‘u crater, in an area of Hawai‘i Volcanoes National Park that remains closed to

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    On Friday afternoon, April 9, lava entered the Halema‘uma‘u lava lake from two sources near the base of the west vent
    April 9, 2021

    Halema‘uma‘u eruptive activity on April 9, 2021

    On Friday afternoon, April 9, lava entered the Halema‘uma‘u lava lake from two sources near the base of the west vent (degassing on left side of the image). This photo was taken around 4:00 p.m. HST from the western rim of Halema‘uma‘u crater, at Kīlauea summit. The lava source closer to the west vent emerged approximately one hour before this photo was taken. USGS Photo

    ...
    Color photograph of lava lake and crater wall
    April 8, 2021

    April 8, 2021 — Kīlauea

    The crusted-over southern shoreline of the lava lake in Halema‘uma‘u at Kīlauea's summit has accumulated talus (rubble) blocks on the surface since it solidified in February. On April 8, 2021, HVO field geologists noted steaming east of the talus (above the rubble in the photo) that was producing hazy viewing conditions. USGS photo by C. Parcheta.

    View of the Kīlauea summit lava lake from the west rim of Halema‘uma‘u crater on April 7, 2021
    April 7, 2021

    Kīlauea summit lava lake on April 7, 2021

    View of the Kīlauea summit lava lake from the west rim of Halema‘uma‘u crater on April 7, 2021. Lava continues to erupt from the west vent, where a diffuse gas plume is visible in the lower left. The active west part of the lava lake (lower center) is a lighter gray color, compared to the darker appearance of the solidified surface crust to the east. This photo was taken

    ...
    A zoomed in view of the active lava lake and western vent, taken from the west rim of Halema‘uma‘u crater at Kīlauea summit
    April 7, 2021

    Active lava lake within Halema‘uma‘u crater on April 7, 2021

    A zoomed in view of the active lava lake and western vent, taken from the west rim of Halema‘uma‘u crater at Kīlauea summit. The active lava lake remains perched a few meters (yards) higher than the surrounding solidified lava crust. A few small rafted islands (darker in color) are visible within the active western lava lake. The bluish-white gas plume marks the location

    ...
    Color photograph of lava lake
    April 5, 2021

    April 5, 2021 — Kīlauea

    The lava lake in Halema‘uma‘u crater, at the summit of Kīlauea, remains active, as seen in this view looking north. Active surface lava is limited to the western (left) portion of the lake between the main island and the western fissure complex. The blueish tinge to the plume from the western fissure complex (left) is due to sulfur dioxide (SO2). USGS photo

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    Color map of lava lake at volcano summit
    April 5, 2021

    April 5, 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 225 m (738 ft) of the crater, to an elevation of 742 m (2434 ft) asl since the eruption began on December 20, 2020. Contour lines highlighted in green, purple, and blue mark

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    Color photograph of lava flow
    April 2, 2021

    Kīlauea summit eruption — April 2, 2021

    A telephoto view of the eastern Halema‘uma‘u crater wall and portion of the crusted-over lava lake at Kīlauea summit. In this photo, molten lava from below the surface crust has squeezed up between the lava crust and the crater wall as an “ooze-out.” USGS photo taken by L. DeSmither on April 2, 2021.

    Color photograph of lava lake
    April 2, 2021

    Kīlauea summit eruption — April 2, 2021

    A telephoto image from the ongoing eruption within Halema‘uma‘u crater at the summit of Kīlauea. Lava continues to enter the lava lake through an inlet near the base of the west vent cone (right). An incandescent opening near the top of the cone (upper center), ejected occasional bursts of spatter. Crustal foundering of a section of the lava lake surface crust (lower

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    Color photograph of volcanic vent
    April 2, 2021

    Vent in Halema‘uma‘u at Kīlauea's summit - April 2, 2021

    Telephoto image of the western cone complex of the current eruption in Halema‘uma‘u at Kīlauea's summit. In the center, a horseshoe-shaped spatter rampart is partially filled in by a more recent spatter cone. The cone has an incandescent opening that spatter is occasionally erupted from. Behind the main cone (to the right in the image) is another spatter cone, darker in

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    Color photograph of lava lake
    April 2, 2021

    Kīlauea summit eruption — April 2, 2021

    A wide view of the eruption within Halema‘uma‘u crater at the summit of Kīlauea. The western vent and perched lava lake remain active in the western portion of the crater (left). Sulfur dioxide emission rates remain elevated, with the most recent measurement being 1,200 tonnes per day on April 1. USGS photo taken by L. DeSmither on April 2, 2021.

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    Lava erupting from the west vent in Halema‘uma‘u crater emerged from a second source closer to the vents base
    April 13, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 226 m (741 ft) deep this morning, April 13. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    USGS science for a changing world
    April 9, 2021

    The USGS recently published a data release that includes a three-dimensional model of Puʻuʻōʻō, on Kīlauea's East Rift Zone, and the collapse crater, constructed from aerial thermal images collected on 11 May 2018.  Structure-from-motion processing was used to create the model from the sequence of oblique images, and ground control using kinematic GPS was used to georegister the model.   

    Color photograph of lava lake and crater wall
    April 9, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 225 m (738 ft) deep this morning, April 9. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    View of the Kīlauea summit lava lake from the west rim of Halema‘uma‘u crater on April 7, 2021
    April 8, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 225 m (738 ft) deep this morning, April 8. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    April 1, 2021, spectrogram recorded at station WRM, located near Halemaʻumaʻu at Kīlauea’s summit.
    April 8, 2021

    The USGS Hawaiian Volcano Observatory (HVO) uses dozens of seismometers to locate individual earthquakes and identify signals that are related to faulting and magma movement within our volcanoes.

    Color photograph of lava lake
    April 6, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 225 m (738 ft) deep this morning, April 6. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    Color photograph of lava flow
    April 5, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 225 m (738 ft) deep this morning, April 5. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    USGS science for a changing world
    April 3, 2021

    The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.3 earthquake located beneath Mauna Loa's south flank on Saturday, April 3, at 11:15 a.m., HST. This earthquake was preceded by a magnitude-3.9 at approximately the same location on 11:02 a.m., HST.

    Color photograph of volcanic vent
    April 2, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 225 m (738 ft) deep this morning, April 2. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    Color photograph of volcanic vent
    April 1, 2021

    Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 224 m (735 ft) deep this morning, April 1. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

    Black and white photographs of lava lakes in crater
    April 1, 2021

    One of the most interesting aspects of the current activity in Halemaʻumaʻu is the occasional oozing of lava around the edges of the entire crater while the lava surface is rising. Has that phenomenon been reported before in any accounts of previous Kīlauea activity?  

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