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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: October 20, 2020

Photo and Video Chronology – Kīlauea – October 20, 2020

Direct gas sampling at Sulphur Banks on September 30, 2020

Date published: October 15, 2020

Volcano Watch — Crack team of geologists measure the Koa‘e fault system

The Koa‘e fault system connects Kīlauea’s East and Southwest Rift Zones south of the caldera. Faults here appear as low cliffs, or “scarps” along Hilina Pali Road in Hawai‘i Volcanoes National Park. These fault-cliffs slip during major earthquakes, such as those of May 4, 2018—near the beginning of Kīlauea’s 2018 eruption.

Filter Total Items: 67
Date published: September 11, 2020
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: August 28, 2020
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: 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 11, 2019
    Status: Active

    Developing optimal post-fire restoration strategies to build ecosystem resilience - Stephanie Yelenik

    Grass-fire cycles are a problem globally, contributing to expanding exotic grasslands, decreased forest area, and increased fire frequency/size worldwide. Thus, to create resilience to fire in these landscapes, we need to better understand grass-fire interactions and how to restore communities that can resist grass invasion. 

    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

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

    Agenda – PDF (47KB)
    All Presentations - (16.4 MB ZIP file)

    The following links are to PDF...

    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.

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    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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    The September 23, 2020, overflight provided aerial photos of Kīlauea's summit that were used to construct an updated map. Poor w
    September 25, 2020

    The September 23, 2020, overflight provided aerial photos of Kīlauea's summit that were used to construct an updated map.

    thermal map shows relative surface temperatures across Kīlauea's 2018 lower East Rift Zone lava flow field.
    August 31, 2019

    This preliminary thermal map shows relative surface temperatures across Kīlauea's 2018 lower East Rift Zone lava flow field.

    Thermal map of Kīlauea summit
    August 22, 2019

    This thermal map was constructed from 1008 images collected by a thermal camera during a helicopter overflight on August 22, 2019.

    Thermal map of Kīlauea Caldera
    April 8, 2019

    This thermal map, which was constructed by merging about 1300 images from a morning helicopter overflight on April 8, shows the distribution of some prominent thermal features in Kīlauea's summit caldera. 

    preliminary map of Kīlauea lower East Rift Zone lava flow thicknesses
    February 19, 2019

    Data depicted on this preliminary map of Kīlauea lower East Rift Zone lava flow thicknesses are subject to change.

    Thermal map of fissure system and lava flows.
    August 15, 2018

    This thermal map shows the fissure system and lava flows as of 6 am on Wednesday, August 15.

    Map showing fissure flows
    August 14, 2018

    Map as of 12:00 p.m. HST, August 14, 2018.

    Thermal map of fissure system and lava flows.
    August 11, 2018

    This thermal map shows the fissure system and lava flows as of 6 am on Saturday, August 11.

    Thermal map of fissure system and lava flows.
    August 9, 2018

    This thermal map shows the fissure system and lava flows as of 6 am on Thursday, August 9.

    Map showing fissure flows
    August 9, 2018

    Map as of 2:00 p.m. HST, August 9, 2018.

    Map showing fissure flows
    August 7, 2018

    Map as of 11:00 a.m. HST, August 7, 2018.

    Thermal map of fissure system and lava flows.
    August 6, 2018

    This thermal map shows the fissure system and lava flows as of 6 am on Monday, August 6. 

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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

    Spatially distributed groundwater recharge for 2010 land cover estimated using a water-budget model for the Island of O‘ahu, Hawai‘i

    Owing mainly to projected population growth, demand for freshwater on the Island of Oʻahu is expected to increase by about 26 percent between 2010 and 2030, according to the City and County of Honolulu. Estimates of groundwater recharge are needed to evaluate the availability of fresh groundwater. For this study, a water-budget model with a daily...

    Engott, John A.; Johnson, Adam G.; Bassiouni, Maoya; Izuka, Scot K.; Rotzoll, Kolja
    Engott, J.A., Johnson, A.G., Bassiouni, Maoya, Izuka, S.K., and Rotzoll, Kolja, 2017, Spatially distributed groundwater recharge for 2010 land cover estimated using a water-budget model for the Island of O‘ahu, Hawai‘i (ver. 2.0, December 2017): U.S. Geological Survey Scientific Investigations Report 2015–5010, 49 p., https://doi.org/10.3133/sir20155010.

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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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    Color photograph of yellow native sulfur crystals
    September 30, 2020

    Close-up image of native sulfur crystals

    A close-up image of native sulfur crystals that formed within fumaroles at the Sulphur Banks in Hawai‘i Volcanoes National Park. In addition to sulfur species and other gases, volcanoes emit water vapor. Here, some of the vapor has condensed to liquid water and formed droplets visible on the sulfur crystals. USGS photo by P. Nadeau. 

    Photograph of tubing inserted into a fumarole
    September 30, 2020

    Tubing inserted into a fumarole

    Tubing inserted into a fumarole at the Sulphur Banks in Hawai‘i Volcanoes National Park allows HVO gas scientists to sample gas. The gas travels through the tube into gas sampling bottles for later analyses. USGS photo by M. Warren.

    Color photographs of volcanic crater lake
    September 23, 2020

    Kīlauea's summit water lake comparison - September 23, 2020

    HVO geologists made observations of Kīlauea's summit water lake from the east rim of Halema‘uma‘u. This view point is on the large downdropped block that subsided during the 2018 collapse events. From this spot, a view of the entire lake is possible, providing a new perspective on the growth of the lake. The last visit to this spot was on December 18, 2019, when the lake

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    Photograph of volcanic crater lake
    September 23, 2020

    Kīlauea's water lake from the east side - September 23, 2020

    This view shows Kīlauea's water lake from the east side of the crater. On September 23, 2020, the western portion of the lake (top of image) was the most varied in color, with patches of greenish and brown water. The majority of the lake surface, however, was the typical tan hue. USGS photo by M. Patrick.

    Photograph of material floating on volcanic crater lake
    September 23, 2020

    Floating material on Kīlauea's summit water lake on September 23, 2020

    Small patches of light-colored floating material were seen drifting on the surface of Kīlauea's summit water lake on September 23, 2020. The composition of this material is unknown, but future water sampling missions may provide insight. USGS photo by M. Patrick.

    Color photograph of road and crater lake
    September 23, 2020

    Kīlauea’s summit water lake and Crater Rim Drive - September 23, 2020

    Portions of Crater Rim Drive, within Hawai‘i Volcanoes National Park, appear cracked, offset, and down-dropped in this photo, taken during an overflight of Kīlauea’s summit on September 23, 2020. To the north, Kīlauea’s summit water lake, within Halema‘uma‘u, is visible. USGS photo by K. Mulliken.

    Photograph of trail and sulfur banks
    September 23, 2020

    Sulfur Banks area and Ha‘akulamanu trail

    Hawaiian Volcano Observatory geologists flew over the Sulfur Banks area and Ha‘akulamanu trail within Hawai‘i Volcanoes National Park on September 23, 2020. Fumaroles in the Sulphur Banks area are sampled approximately every three months by Hawaiian Volcano Observatory gas geochemists to track long-term changes in volcanic gas chemistry at Kīlauea. USGS photo by K.

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    Color photograph of steam vents
    September 23, 2020

    Wahinekapu (Steaming Bluff) and the Steam Vents area

    The weather was overcast during an overflight of Kīlauea's summit on September 23, 2020. This view shows Wahinekapu (Steaming Bluff) and the Steam Vents area within Hawai‘i Volcanoes National Park. Extensive cracks in the area allow heated groundwater to escape from underground. Cracks reach up to 63 degrees Celsius (145 degrees Fahrenheit), preventing trees from growing.

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    Photograph of scientists surveying caldera
    September 23, 2020

    Kīlauea summit gravity survey - September 23, 2020

    On September 23, 2020, Hawaiian Volcano Observatory geophysicists and a geologist conducted a gravity survey of Kīlauea summit, as part of HVO's regular monitoring program. In this photo, scientists are carrying survey equipment westward along the remnants of the Halema‘uma‘u Trail on the down-dropped block of Kīlauea caldera. The fissure from the 1954 eruption can be seen

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    Photograph of scientists surveying caldera
    September 23, 2020

    Kīlauea summit gravity survey - September 23, 2020

    During a gravity survey, HVO scientists measure the relative strength of gravity (gravimeter, bottom left corner of photo) between benchmarks. High-precision vertical positions from kinematic Global Positioning System (GPS, tripod and antenna middle of photo) help correct the gravity measurement for the effects of elevation changes. The south sulfur banks, exposed during

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    Photograph of gravimeter in caldera
    September 23, 2020

    Kīlauea summit gravity survey - September 23, 2020

    A gravimeter makes a measurement at a benchmark situated among lava flows erupted in 1919. The strength of gravity varies with both elevation and the amount of mass beneath the instrument. Changes in mass can indicate changes in the amount of magma entering Kīlauea's magma reservoirs. USGS photo by A. Flinders.

    Photograph of scientist surveying gravity in caldera
    September 23, 2020

    Kīlauea summit gravity survey - September 23, 2020

    An HVO geophysicist takes a gravity measurement at a benchmark near a continuous gravimeter (inside hutch). The continuous gravimeter takes gravity measurements once per second and relays the data via radio back to HVO. During the gravity survey on September 23, 2020, HVO scientists took measurements at multiple locations on the floor of Kīlauea caldera. By comparing the

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    Color photograph of two scientists sampling a volcanic fumarole
    October 20, 2020

    Direct gas sampling at Sulphur Banks on September 30, 2020

    UH-Hilo geology majors measure vertical offset of Hilina Pali road on Kulanaokuaiki Pali in Hawai‘i Volcanoes National Park
    October 15, 2020

    The Koa‘e fault system connects Kīlauea’s East and Southwest Rift Zones south of the caldera. Faults here appear as low cliffs, or “scarps” along Hilina Pali Road in Hawai‘i Volcanoes National Park. These fault-cliffs slip during major earthquakes, such as those of May 4, 2018—near the beginning of Kīlauea’s 2018 eruption.

    No significant changes at Kīlauea's summit water lake
    October 14, 2020

    No significant changes at Kīlauea's summit water lake

    Comparison photos of the floor of Kīlauea Caldera from the foot of the Halema‘uma‘u Trail in Hawai‘i Volcanoes National Park, fr
    October 9, 2020

    Comparison photos of the floor of Kīlauea caldera

    The Hawaiian Volcano Observatory library after the magnitude-6.6 Ka‘ōiki earthquake on 1983 November 16.
    October 8, 2020

    Major earthquakes cannot be predicted. Successful earthquake predictions need to have three things correct: the location, the time, and the magnitude. The best anyone can reliably do is get two out of three correct. And the most important thing for everyone to do is prepare—have a plan, build a kit, and practice drills. Join us for the ShakeOut on October 15th!

    image related to volcanoes. See description
    October 2, 2020

    A news release published by Hawai‘i Volcanoes National Park on September 30, 2020, announces a report summarizing initial public input about the disaster recovery project to repair and/or replace critical infrastructure in the park, and U.S. Geological Survey Hawaiian Volcano Observatory facilities and equipment damaged during the 2018 eruption and summit collapse of Kīlauea Volcano.

    Color photograph of earthquake report
    October 1, 2020

    Residents on the Island of Hawaiʻi are accustomed to feeling earthquakes. As the ground shaking subsides and the safety of everyone around is assured, one of the first questions we typically ask is “how big was that earthquake?”

    Photograph of volcanic crater lake
    September 29, 2020

    Videos of the water lake at Kīlauea's summit

    image related to volcanoes. See description
    September 28, 2020

    Last year at Kīlauea Volcano, water appeared within the summit caldera where a lava lake had been for the previous decade. This piece covers the reliance on Unoccupied Aircraft Systems (UAS) for sampling the lake water, the growth and significance of the new water lake, and implications for future eruptive activity at Kīlauea's summit. 

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