Unified Interior Regions

Hawaii

States L2 Landing Page Tabs

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: September 25, 2019

Volcano Watch - Scientific community lends a hand to measure Kīlauea's changing shape

The USGS Hawaiian Volcano Observatory (HVO) has an extensive network of instruments that helps us monitor how the ground deforms due to magma moving underground. However, we are fortunate that scientific colleagues also pitched in to support our responses to Kīlauea Volcano's lower East Rift Zone (LERZ) eruption and summit collapse.

Date published: September 25, 2019

Volcano Watch - Kīlauea hazard assessments include analyses of salts on volcanic ash

Sulfur dioxide (SO2)-rich emissions have long been a feature of Kīlauea Volcano's summit activity. However, vigorous volcanic ash production during the 2018 eruption raised new concerns about potential impacts for downwind communities.

Date published: September 19, 2019

New USGS geonarrative describes Kīlauea Volcano's 2018 events

A new USGS geonarrative provides a brief overview of recent Kīlauea eruptions, highlighting the circumstances leading up to and summarizing the 2018 events.

Filter Total Items: 67
Value of US Coral Reefs for Risk Reduction
Date Published: January 21, 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, Michael Beck
    USGS
    Date Published: December 19, 2019
    Status: Completed

    U.S. Seismic Hazard Maps – Hawaii

    Seismic hazard maps for Hawaii.

    Developing optimal post-fire restoration strategies to build ecosystem resilience
    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. 

    AI-Fig4
    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.

    AI-Fig4
    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.

    USGS
    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)

    The following links are to PDF versions of the workshop presentations. All workshop participants have granted permission to post their...

    Aerial view of the coastline of Kauai Island
    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.

    Contacts: Curt Storlazzi
    Image: The USGS Hawaiian Volcano Observatory Monitors Kilauea's Summit Eruption
    Date Published: September 10, 2019
    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.

    Contacts: Curt Storlazzi
    Sunset in Hawaii
    Date Published: September 10, 2019
    Status: Active

    Coral Reef Project: Kahoʻolawe

    As part of the USGS Coral Reef Project, the USGS is trying to better understand how nearshore processes impact the deeper, scattered coral reef communities of Kahoʻolawe.

    Contacts: Curt Storlazzi
    Image: Waterfall, Maui, Hawaii
    Date Published: September 10, 2019
    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.

    Contacts: Curt Storlazzi
    Filter Total Items: 60
    Screen shot of a USGS geonarrative showing Kilauea
    September 26, 2019

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

    A shorebird on a post in Hawaii
    September 23, 2019

    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.

    A shorebird on a post in Hawaii
    September 5, 2019

    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.

    USGS
    September 2, 2019

    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...

    USGS
    August 29, 2019

    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.

    A shorebird on a post in Hawaii
    August 26, 2019

    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.

    Bottom graphic shows view of river and beach from above, top graphic illustrates sediment in same area labeled.
    March 21, 2019

    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.

    Map of a coastline and the areas that have been mapped are labeled with dots and letters.
    February 14, 2019

    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.

    USGS
    January 1, 2019

    This portion of the data release presents sediment grain-size data from samples collected from Anahola Valley, Kaua`i, Hawai`i in November, 2015 (USGS Field Activity 2015-671-FA). 63 sand and mud samples were taken from sediment cores that were collected using a ‘Russian’ corer (a hand-held, side-filling peat auger) from two site locations. Site locations were determined using a hand-held glo

    USGS
    January 1, 2019

    Coral Point Count with Excel extensions (CPCe; Kohler and Gill, 2006) was used to help calculate percent of coral cover or other benthic substrates from a randomly selected subset of seafloor photographs collected on the west Hawaii Island coast.

    Filter Total Items: 297
    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. 

    Map showing fissure flows
    August 6, 2018

    Map as of 2:00 p.m. HST, August 6, 2018.

    Filter Total Items: 109
    Publication Thumbnail
    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.

    Publication Thumbnail
    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.

    Publication Thumbnail
    Year Published: 2019

    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.

    Publication Thumbnail
    Year Published: 2019

    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

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

    Publication Thumbnail
    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.

    Publication Thumbnail
    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.

    Publication Thumbnail
    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.

    Publication Thumbnail
    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.

    Publication Thumbnail
    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.

    Publication Thumbnail
    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.

    Publication Thumbnail
    Year Published: 2016

    Panel regressions to estimate low-flow response to rainfall variability in ungaged basins

    Multicollinearity and omitted-variable bias are major limitations to developing multiple linear regression models to estimate streamflow characteristics in ungaged areas and varying rainfall conditions. Panel regression is used to overcome limitations of traditional regression methods, and obtain reliable model coefficients, in particular to...

    Bassiouni, Maoya; Vogel, Richard M.; Archfield, Stacey A.

    Filter Total Items: 1
    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.

    Filter Total Items: 1,608
    January 8, 2020

    Living with Earthquakes in Hawaii

    Tens of thousands of earthquakes occur each year in Hawaii, making it one of the most seismically active places in the United States. Brian Shiro, USGS Hawaiian Volcano Observatory seismologist, talks about the different types of earthquakes in Hawaii and how they are monitored to help forecast volcanic eruptions and recounts the dramatic seismicity that happened during

    ...
    January 7, 2020

    Transitions: What's next for HVO and the volcanoes it monitors?

    2018 and 2019 were years of profound change at Kīlauea Volcano and the USGS Hawaiian Volcano Observatory. Devastation caused by the largest lower East Rift Zone eruption and summit collapse in at least 200 years resulted in many transitions for island residents, including HVO. Tina Neal, Scientist-in-Charge of the Hawaiian Volcano Observatory, describes the current status

    ...
    Aerial imagery of islands are marked to show different data about each island's coast.
    January 1, 2020

    Hawaiʻi Coral Reefs and Coastal Hazard Risk Reduction

    Rigorously Valuing the Role of Hawaiʻi’s Coral Reefs in Coastal Hazard Risk Reduction

    Estimated Annual Benefits

    Maps of Hawaiʻi showing the distribution of the value of averted direct building damages, indirect economic activity losses, and population annually protected from flooding by coral reefs. Results at 10 m2 resolution are aggregated into

    ...
    Earthquake Rates - Past Year - Kīlauea
    December 31, 2019

    Earthquake Rates - Past Year - Kīlauea

    Number of earthquakes per week during the past year (blue bars). The red line is the cumulative moment (energy) release.

    Electronic Tilt at Mauna Loa Summit - Past Month
    December 31, 2019

    Electronic Tilt at Mauna Loa Summit - Past Month

    Electronic Tilt at Mauna Loa Summit - Past Month. Tilt data from a site near the northwest rim of Mauna Loa's summit caldera. The tiltmeter responds to daily and seasonal temperature fluctuations as well as possible changes in Mauna Loa's magma storage system.

    Locations and depths of earthquakes during the past week
    December 31, 2019

    Earthquake Hypocenters Map and Cross Section - Past Week Kilauea

    Map showing locations of earthquakes during the past week. Bottom: Depth of earthquakes (circles) during the past week. Circle-size represents magnitude, and color indicates depth. An interactive earthquake plot can be found on the HVO Earthquakes page.

    Earthquake Depths - Past Year - Kīlauea
    December 31, 2019

    Earthquake Depths - Past Year - Kīlauea

    Depth of earthquakes during the past year. Circle-size represents magnitude, and color indicates depth.

    Electronic Tilt at Mauna Loa Summit - Past Week
    December 31, 2019

    Electronic Tilt at Mauna Loa Summit - Past Week

    Electronic Tilt at Mauna Loa Summit - Past Week

    Earthquake Rates and Depths - Past Week Monitoring Data for Kīlauea
    December 31, 2019

    Earthquake Rates and Depths - Past Week Monitoring Data for Kīlauea

    Number of earthquakes per day during the past week (blue bars). The red line is the cumulative moment (energy) release.

    Global Positioning System - Past Year - Kīlauea
    December 31, 2019

    Global Positioning System - Past Year - Kīlauea

    Change in distance between two Global Positioning System (GPS) stations located on opposite sides of Kīlauea's caldera. A rapid increase in distance can be interpreted as inflation of the summit magma reservoir or Pu‘u ‘Ō‘ō magma storage chamber.

    Electronic Tilt at Mauna Loa Summit - Past Month
    December 31, 2019

    Electronic Tilt at Mauna Loa Summit - Past Month

    Electronic Tilt at Mauna Loa Summit - Past Month

    Earthquake Hypocenters Map - Past 5 Years Mauna Loa
    December 31, 2019

    Earthquake Hypocenters Map - Past 5 Years Mauna Loa

    Earthquake Hypocenters Map - Past 5 Years Mauna Loa. Map showing locations of earthquakes during the past year.

    Filter Total Items: 1,776
    geophysicist downloads data at a temporary GPS station
    September 25, 2019

    The USGS Hawaiian Volcano Observatory (HVO) has an extensive network of instruments that helps us monitor how the ground deforms due to magma moving underground. However, we are fortunate that scientific colleagues also pitched in to support our responses to Kīlauea Volcano's lower East Rift Zone (LERZ) eruption and summit collapse.

    Kīlauea volcanic ash sample
    September 25, 2019

    Sulfur dioxide (SO2)-rich emissions have long been a feature of Kīlauea Volcano's summit activity. However, vigorous volcanic ash production during the 2018 eruption raised new concerns about potential impacts for downwind communities.

    Screen shot of a USGS geonarrative showing Kilauea
    September 19, 2019

    A new USGS geonarrative provides a brief overview of recent Kīlauea eruptions, highlighting the circumstances leading up to and summarizing the 2018 events.

    view looking north across Mauna Loa's summit caldera
    September 9, 2019

    An early morning view looking north across Moku‘āweoweo, Mauna Loa's summit caldera, from a spot near the summit cabin on the volcano's south caldera rim.

    The Hilina Pali on Kīlauea Volcano's south flank
    August 29, 2019

    The pali (cliffs) of Kīlauea's south flank are some of the volcano's most striking features. Reaching up to 500 m (1500 ft) high, they stand out against the otherwise gentle slopes of Hawai‘i's most active shield volcano.

    pond of water in Halema‘uma‘ crater
    August 26, 2019

    On July 25, 2019, a helicopter pilot flying a U.S.Geological Survey mission over Kīlauea noticed an unusual green patch at the bottom of Halema‘uma‘u, the crater at the summit of the volcano.

    False-Color Landsat 8 Operational Land Imager
    August 22, 2019

    Last month, the entire world celebrated the 50th anniversary of Apollo 11's triumphant flight to the moon and the first human footsteps on the surface of another planetary body on July 20, 1969. 

    pond of water in Halema‘uma‘ crater
    August 21, 2019

    HVO geophysicist Jim Kauahikaua discusses the water pond in Halema‘uma‘u and what it means.

    National Historical Park south of Kona on the big island of Hawaii
    August 15, 2019

    In the land of Kamehameha, south of Kona on the big island of Hawaii, a sacred landscape called Puʻuhonua O Hōnaunau faces the uncertainty of the rising seas.

    The bones of royal chiefs rest there. Stories of how ancient Hawaiian lawbreakers flocked to this place of refuge still resonate throughout the 180-acre national historic park that surrounds Hōnaunau Bay.

    What does water in Halema‘uma‘u mean
    August 15, 2019

    The slowly deepening pond of water on the floor of Halema‘uma‘u, the first in recorded history, has captured the interest of media and the public, both locally and nationally. Many questions are being asked. The two most frequent are, where is the water coming from and what is its importance?

    HVO now tracking ponds of water, not lava, at Kīlauea's summit
    August 8, 2019

    The recent appearance of water at the bottom of Halema‘uma‘u, a crater at the summit of Kīlauea Volcano, has attracted wide attention and generated many questions. To understand the significance of this water, we must first gather accurate information on its behavior.

    Aerial view of Halema‘uma‘u at the summit of Kīlauea
    August 1, 2019

    USGS Hawaiian Volcano Observatory (HVO) scientists usually base their research on observations, either visual or instrumental. Interpretations come from these observations, so they must be as good as possible. Incorrect observations can, and have, led to erroneous interpretations. 

    Filter Total Items: 53