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Hawaii

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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: 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: 66
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...

USGS
Date Published: October 23, 2019
Status: Active

U.S. Seismic Hazard Maps–Hawaii, Puerto Rico and the U.S. Virgin Islands, and Samoa and the Pacific Islands

Seismic hazard maps for Hawaii, Puerto Rico and the U.S. Virgin Islands, and Samoa and the Pacific Islands.

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
Camera was positioned halfway in and out of water to show a coastal bluff with vegetation in background, coral reef underwater.
Date Published: September 10, 2019
Status: Active

Sea-Level Rise and Climate Change Impacts to Reefs

This study is part of the USGS Coral Reef Project.

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
Sky view of the coastline of a mountainous island with a shallow coral reef that has lots of deep holes and channels.
Date Published: September 10, 2019
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.

Contacts: Curt Storlazzi
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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.

NWIS Mapper screenshot
March 5, 2019

The NWIS mapper provides access to over 1.5 million sites contained in the USGS National Water Information System (NWIS), including sites where current and historical surface-water, groundwater, springs, and atmospheric data has been collected. Users can search by site type, data type, site number, or place.

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

Along-shore surface-based 2D electrical resistivity tomography (ERT) surveys were collected in the nearshore region of Makua, Kauai.

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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: 108
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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: 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.

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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

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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 A.
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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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.

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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.

Filter Total Items: 1,488
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.

Earthquake Depths - Past Week Kilauea
December 31, 2019

Earthquake Depths - Past Week Kilauea

Earthquake Depths - Past Week Kilauea. Circle-size represents magnitude, and color indicates depth. An interactive earthquake plot can be found on the HVO Earthquakes page.

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

Global Positioning System - Past Year - Kīlauea

Change in distance between two stations near Pu‘u ‘Ō‘ō. A rapid increase in distance can be interpreted as inflation of the summit magma reservoir or Pu‘u ‘Ō‘ō magma storage chamber.

Cross-caldera Distance Change - Past Year Mauna Loa
December 31, 2019

Cross-caldera Distance Change - Past Year

Cross-caldera Distance Change - Past Year

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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. 

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