Unified Interior Regions

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.

States L2 Landing Page Tabs

Filter Total Items: 68
Date published: July 5, 2016
Status: Active

Monitoring Hawaiian Biodiversity: Changes to forest birds and their habitat

Hawaiian forests are beset by many stressors, resulting in a complex pattern of altered ecosystems, impeirled species, and (in some areas) substantial protection and restoration. Short-term studies focused on specific sites or biota have limited value in understanding landscape-level change. Long-term and spatialy extensive data are needed to understand how ecosystems are reacting to both...

Date published: May 13, 2016
Status: Active

Restoration Ecology

Restoration of ecological systems in wildland areas often involves restoring species to habitats degraded by invasive plant and animal species.  Often, such invasive species exert community level impacts, such as direct competition, but may also alter ecosystem function. For example, invasive plants have been documented to alter fire regimes, soil nutrients and microbes, food webs, and/or...

Date published: May 11, 2016
Status: Active

Status and Trends of Hawaiian Flora and Fauna

Hawai‘i has more endangered species than any other state - over 394 species.  In spite of this fact, there is not a central clearing house for information on the status and trends of these species.  Information is spread over the following areas:

1. USGS maintains some information on Forest Birds.

2. USFWS maintains summary data on listed and proposed plants.

3. The...

Date published: May 11, 2016
Status: Completed

Dynamics of a Koa Looper Moth Outbreak and Response by the Native Forest Community

A massive outbreak of the native koa looper moth (Scotorythra paludicola; Geometridae) defoliated more than a third of the koa (Acacia koa) forest on Hawai‘i Island during 2013–2014. Our objective was to record the dynamics of the koa looper (Scotorythra paludicola) outbreak and evaluate the response to the outbreak by the forest ecosystem generally as well as select native and invasive...

Date published: April 26, 2016
Status: Active

Webinar: Recreational Seascapes: Integrating Human and Mechanical Observations on Hawaiʻi Island

View this webinar to learn how scientists explored how people on the seascape experienced climate and environmental changes in Hawai'i.

Contacts: Noelani Puniwai
Date published: April 17, 2016
Status: Active

Development of an Environmental Assessment and Eradication Plan to Remove Tilapia from Ponds and Wetlands in National Parks on the Island of Hawai’i

Mozambique tilapia, a highly invasive non-native fish of the family Cichlidae, were discovered in a wetland in Kaloko-Honokohau National Historical Park on the Big Island of Hawai'i. As the U.S. National Park Service works to restore the natural communities and functions of wetland ecosystems on the island, the eradication of the tilapia population is considered necessary to fully achieve...

Contacts: Leo Nico, Ph.D.
Date published: April 13, 2016

Understanding Coastal Change

Scientists perform a range of studies that document, assess, and model coastal change, risk, and vulnerability. Studies include historical shoreline change, the geologic structure and history of coastal regions, sediment supply and transport, sea-level rise, and how extreme storm events affect rates and impacts of coastal change.

Date published: April 13, 2016

Geologic Hazards and Catastrophic Events

We study the distribution and hazard potential of coastal and submarine events such as earthquakes and submarine landslides and associated tsunami potential, hurricane induced coastal inundation, extreme storms, sea-level rise and oil and gas spills. We also model development to help evaluate and forecast coastal hazard probability and occurrence.

Date published: April 13, 2016

Ocean Resources for America's Needs

Our scientists conduct research studies focused on geologic mapping, sampling and understanding of mineral and energy resources and studies of the geologic setting and processes to inform renewable energy development offshore.

Date published: April 13, 2016

Coastal and Marine Ecosystem Science

We bring together multidisciplinary expertise focused on developing tools and models to improve understanding of how healthy ecosystems function as well as how they respond to environmental changes and human impacts including ecosystem restoration. Research studies address coral reef, coastal wetland, benthic habitat and groundwater resources.

Date published: March 17, 2016

Volcano Hazards Assessments Help Mitigate Disasters

The Volcano Hazards Program develops long-range volcano hazards assessments. These includes a summary of the specific hazards, their impact areas, and a map showing ground-hazard zones. The assessments are also critical for planning long-term land-use and effective emergency-response measures, especially when a volcano begins to show signs of unrest.

Date published: March 9, 2016

Pacific Island Ecosystems Research Center

We work with others to provide scientific understanding and technologies needed to support and implement sound management and conservation of our Nation's biological resources in Hawaii and other Pacific island locations.

Filter Total Items: 89
Date published: December 21, 2016

Digital image mosaics of the nearshore coastal waters of selected areas on the Hawaiian Islands of Hawai‘i, Maui, Moloka‘i, and O‘ahu generated using aerial photographs and SHOALS airborne lidar bathymetry data

USGS has the capability to compile digital image mosaics that are useful for creating detailed map products. Image maps covering the shallow near-shore coastal waters have been produced for several of the main Hawaiian Islands, including Hawai‘i, Maui, Moloka‘i, and O‘ahu and are presented in JPEG2000 (.jp2) format.

Date published: June 15, 2016

Hawaiʻi Rainfall--current conditions

Continuously recording rainfall sites utilize equipment that automatically record and store the amount of rainfall at specific intervals. Many sites are equipped with telemetry so that information can be electronically transmitted and displayed on the internet in real time.

Date published: June 15, 2016

Hawaiʻi Water Quality--current conditions

Suspended-sediment concentrations are determined from samples collected by an autosampler or collected manually.

Date published: June 15, 2016

Hawaiʻi Groundwater--current conditions

At some sites, groundwater levels in wells are manually measured, using steel or electrical tapes or pressure transducers. Other sites utilize electronic equipment to record and store the water levels at specific intervals. Some sites are equipped with telemetry so that information can be electronically transmitted and displayed in real-time on the internet.

Date published: June 15, 2016

Hawaiʻi Streamflow--current conditions

Continuously recording surface-water stations are stations with equipment that automatically record and store data at specific intervals. Many stations are equipped with telemetry so that information can be electronically transmitted and displayed on the internet in real time.

Date published: April 20, 2016

Structures Data

USGS data portray selected structures data, including the location and characteristics of manmade facilities. Characteristics consist of a structure's physical form (footprint), function, name, location, and detailed information about the structure. The types of structures collected are largely determined by the needs of the disaster planning and response and homeland security organizations....

Date published: April 19, 2016

The United States Interagency Elevation Inventory (USIEI)

The USIEI is a comprehensive, nationwide listing of known high-accuracy topographic and bathymetric data for the United States and its territories. The project is a collaborative effort of the USGS and NOAA with contributions from other federal agencies. The inventory supports the 3D Elevation Program and the Integrated Ocean and Coastal Mapping effort. This resource is updated in Spring and...

Date published: April 19, 2016

Elevation Data

The 3DEP products and services available through The National Map consist of lidar point clouds (LPC), standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.

Date published: April 12, 2016

Orthoimagery Data

Orthoimagery data typically are high resolution aerial images that combine the visual attributes of an aerial photograph with the spatial accuracy and reliability of a planimetric map. The National Map offers public domain, 1-meter orthoimagery for the conterminous United States with many urban areas and other locations at 2-foot or finer resolution.

Date published: April 12, 2016

The National Map Small-Scale Collection

The National Map offers a collection of small-scale datasets, most of which are at 1:1,000,000. The National Map publishes two data collections at one million-scale: one for Global Map users and one for National Map users. In terms of vector geometry, the lines, points, and areas in these data collections are identical. The difference is in the attributes assigned to these features.

Filter Total Items: 377
A helicopter overflight today (Dec. 30, 2020) at approximately 10:00 AM HST
December 30, 2020

December 30, 2020—Kīlauea summit eruption thermal map constructed from aerial imagery

Color thermal map of lava lake
December 29, 2020

December 28, 2020—Kīlauea summit eruption thermal map constructed from aerial imagery

Graphic showing digital elevation models and profiles
December 28, 2020

This graphic depicts the changes to Kīlauea Volcano's summit resulting from the eruption that began on December 20, 2020.

Kīlauea summit eruption reference map showing the location of ongoing lake activity
December 27, 2020

Kīlauea summit eruption reference map showing the location of ongoing lake activity

Color contour map
December 27, 2020

December 27, 2020—Kīlauea summit eruption contour map showing lake level and elevations of features within the caldera

Color map of lava lake temperature
December 27, 2020

December 26, 2020—Kīlauea summit eruption thermal map constructed from aerial imagery

Maps made from aerial imagery taken on a December 26 overflight of Kīlauea Volcano's summit
December 26, 2020

Kīlauea summit eruption maps constructed from aerial imagery

Color map showing lava lake thickness
December 25, 2020

December 25, 2020 preliminary map of the lava lake depth at 2:15 p.m. HST.

Color thermal map of lava lake
December 24, 2020

December 23, 2020—Kīlauea summit eruption thermal map constructed from aerial imagery

Lava lake level measurements collected during a field visit of Kīlauea Volcano's summit just after 11:44 a.m. HST on December 23
December 23, 2020

December 23, 2020 preliminary map of the lava lake depth at 11:44 a.m. HST.

Color thermal map of lava lake
December 22, 2020

December 22, 2020—Kīlauea summit eruption thermal map constructed from aerial imagery

Color map showing lava lake thickness
December 22, 2020

Kīlauea summit eruption lava lake depth map generated from December 22, 2020 imagery

Filter Total Items: 121
Publication Thumbnail
Year Published: 2011

Shallow degassing events as a trigger for very-long-period seismicity at Kilauea Volcano, Hawaii

The first eruptive activity at Kīlauea Volcano’s summit in 25 years began in March 2008 with the opening of a 35-m-wide vent in Halema‘uma‘u crater. The new activity has produced prominent very-long-period (VLP) signals corresponding with two new behaviors: episodic tremor bursts and small explosive events, both of which represent degassing...

Patrick, Matthew R.; Wilson, David C.; Fee, David; Orr, Tim R.; Swanson, Don
Patrick, Matthew, Wilson, David, Fee, David, Orr, Tim, and Swanson, Don, 2011, Shallow degassing events as a trigger for very-long-period seismicity at Kilauea Volcano, Hawaii: Bulletin of Volcanology, v. 73, p. 1179–1186.

Publication Thumbnail
Year Published: 2011

Hydrogeology of the Hawaiian islands

Volcanic-rock aquifers are the most extensive and productive aquifers in the Hawaiian Islands. These aquifers contain different types of groundwater systems depending on the geologic setting in which they occur. The most common groundwater systems include coastal freshwater-lens systems in the dike-free flanks of the volcanoes and dike-impounded...

Cabrera, Maria del Carmen; Lambán, Luis Javier; Valverde, Margarida; Gingerich, Stephen B.; Oki, Delwyn S.

Publication Thumbnail
Year Published: 2011

Recent storm and tsunami coarse-clast deposit characteristics, southeast Hawai'i

Deposits formed by extreme waves can be useful in elucidating the type and characteristics of the depositional event. The study area on the southeast coast of the island of Hawaiʻi is characterized by the presence of geologically young basalts of known age that are mantled by recent wave-derived sedimentary deposits. The area has been impacted by...

Richmond, B.M.; Watt, Sebastian; Buckley, M.; Jaffe, B. E.; Gelfenbaum, G.; Morton, R.A.
Recent storm and tsunami coarse-clast deposit characteristics, southeast Hawai'i; 2011; Article; Journal; Marine Geology; Richmond, B. M.; Watt, S.; Buckley, M.; Jaffe, B. E.; Gelfenbaum, G.; Morton, R. A.

Publication Thumbnail
Year Published: 2010

Changes of freshwater-lens thickness in basaltic island aquifers overlain by thick coastal sediments

Freshwater-lens thickness and long-term changes in freshwater volume in coastal aquifers are commonly assessed through repeated measurement of salinity profiles from monitor wells that penetrate into underlying salt water. In Hawaii, the thickest measured freshwater lens is currently 262 m in dike-free, volcanic-rock aquifers that are overlain by...

Rotzoll, Kolja; Oki, Delwyn S.; El-Kadi, Aly I.

Publication Thumbnail
Year Published: 2010

Effects of groundwater withdrawal on borehole flow and salinity measured in deep monitor wells in Hawai'i-implications for groundwater management

Water-resource managers in Hawai`i rely heavily on salinity profiles from deep monitor wells to estimate the thickness of freshwater and the depth to the midpoint of the transition zone between freshwater and saltwater in freshwater-lens systems. The deep monitor wells are typically open boreholes below the water table and extend hundreds of feet...

Rotzoll, Kolja
Effects of groundwater withdrawal on borehole flow and salinity measured in deep monitor wells in Hawai'i-implications for groundwater management; 2010; SIR; 2010-5058; Rotzoll, Kolja

Publication Thumbnail
Year Published: 2010

Streamflow, suspended-sediment, and soil-erosion data from Kaulana and Hakioawa watersheds, Kaho'olawe, Hawai'i,

Various events over the last two centuries have destroyed the vegetation and caused rapid soil erosion on large areas of the small, arid, windy tropical shield-volcano island of Kaho`olawe, Hawai`i. These activities were largely halted in the 1990s, and efforts have been made to restore the island's vegetation in order to stem erosion. In 2003,...

Izuka, Scot K.; Abbott, Lyman L.
Streamflow, suspended-sediment, and soil-erosion data from Kaulana and Hakioawa watersheds, Kaho'olawe, Hawai'i,; 2010; OFR; 2010-1182; Izuka, Scot K.; Abbott, Lyman L.

Publication Thumbnail
Year Published: 2010

Hawaii StreamStats; a web application for defining drainage-basin characteristics and estimating peak-streamflow statistics

Reliable estimates of the magnitude and frequency of floods are necessary for the safe and efficient design of roads, bridges, water-conveyance structures, and flood-control projects and for the management of flood plains and flood-prone areas. StreamStats provides a simple, fast, and reproducible method to define drainage-basin characteristics...

Rosa, Sarah N.; Oki, Delwyn S.
Hawaii StreamStats; a web application for defining drainage-basin characteristics and estimating peak-streamflow statistics; 2010; FS; 2010-3052; Rosa, Sarah N.; Oki, Delwyn S.

Publication Thumbnail
Year Published: 2010

Terrigenous sediment provenance from geochemical tracers, south Molokai reef flat, Hawaii

Land-derived runoff is one of the greatest threats to coral-reef health. Identification of runoff sources is an important step in erosion mitigation efforts. A geochemical sediment provenance study was done in uplands and across the adjacent fringing reef on the southeast shore of Molokai, Hawaii, to determine whether sediment runoff originated...

Takesue, R.K.
Terrigenous sediment provenance from geochemical tracers, south Molokai reef flat, Hawaii; 2010; OFR; 2010-1155; Takesue, R. K.

Publication Thumbnail
Year Published: 2010

Rainfall, discharge, and water-quality data during stormwater monitoring, H-1 storm drain, Oahu, Hawaii, July 1, 2009, to June 30, 2010

Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. The program is designed to assess the effects of highway runoff and urban runoff collected by the H-1 storm drain on the Manoa-Palolo Drainage Canal. This report summarizes rainfall, discharge, and water-...

Presley, Todd K.; Jamison, Marcael T.J.
Rainfall, discharge, and water-quality data during stormwater monitoring, H-1 storm drain, Oahu, Hawaii, July 1, 2009, to June 30, 2010; 2010; OFR; 2010-1161; Presley, Todd K.; Jamison, Marcael T. J.

Publication Thumbnail
Year Published: 2010

Kiholo Bay, Hawaii, earthquake sequence of 2006: Relationship of the main shock slip with locations and source parameters of aftershocks

We study the source process of the Kīholo Bay earthquake (MW 6.7), which occurred beneath the northwest part of the Island of Hawai‘i on 15 October 2006, and static stress drops of small earthquakes that occurred in 2006 and 2007 around the main shock including aftershocks. We relocate the aftershocks to determine the fault plane from the two...

Yamada, Takuji; Okubo, Paul G.; Wolfe, Cecily
Yamada, Takuji, Okubo, P.G., and Wolfe, C.J., 2010, Kīholo Bay, Hawai‘i, earthquake sequence of 2006: Relationship of the main shock slip with locations and source parameters of aftershocks: Journal of Geophysical Research, v. 115, B08304, 12 p., doi:10.1029/2009JB006657.

Publication Thumbnail
Year Published: 2010

Flood-Frequency Estimates for Streams on Kaua`i, O`ahu, Moloka`i, Maui, and Hawai`i, State of Hawai`i

This study provides an updated analysis of the magnitude and frequency of peak stream discharges in Hawai`i. Annual peak-discharge data collected by the U.S. Geological Survey during and before water year 2008 (ending September 30, 2008) at stream-gaging stations were analyzed. The existing generalized-skew value for the State of Hawai`i was...

Oki, Delwyn S.; Rosa, Sarah N.; Yeung, Chiu W.
Flood-Frequency Estimates for Streams on Kaua`i, O`ahu, Moloka`i, Maui, and Hawai`i, State of Hawai`i; 2010; SIR; 2010-5035; Oki, Delwyn S.; Rosa, Sarah N.; Yeung, Chiu W.

Publication Thumbnail
Year Published: 2010

Effects of Surface-Water Diversion on Streamflow, Recharge, Physical Habitat, and Temperature, Na Wai `Eha, Maui, Hawai`i

The perennial flow provided by Waihe‘e River, Waiehu Stream, ‘Īao Stream, and Waikapū Stream, collectively known as Nā Wai ‘Ehā (“The Four Streams”), made it possible for widespread agricultural activities to flourish in the eastern part of West Maui, Hawai‘i. The streams of the Nā...

Oki, Delwyn S.; Wolff, Reuben H.; Perreault, Jeff A.
Effects of Surface-Water Diversion on Streamflow, Recharge, Physical Habitat, and Temperature, Na Wai `Eha, Maui, Hawai`i; 2010; SIR; 2010-5011; Oki, Delwyn S.; Wolff, Reuben H.; Perreault, Jeff A.

Filter Total Items: 2,305
Color photograph of volcanic vent
October 11, 2021

October 11, 2021 — Kīlauea

This zoomed-in view of the western fissure within Halema‘uma‘u, at the summit of Kīlauea, was captured on October 11, 2021, through the lens of a laser rangefinder. A prominent horseshoe-shaped spatter cone, measured to be standing 28 m (92 ft) above the adjacent lava lake, surrounds a roiling lava pond which also hosts taller fountains at times. HVO scientists observed

...
Color photograph of lava flow
October 11, 2021

October 11, 2021 — Kīlauea

This zoomed-in view of the northwest side of the main island within the Halema‘uma‘u lava lake shows a "rootless lava flow" (silver) that formed in the early stages of the eruption on September 29, 2021. A rootless lava flow is one that has no physical linkage with its source eruptive vent, because the flow is fed by molten spatter falling onto a solidified surface. In

...
Color photograph of lava lake
October 10, 2021

October 10, 2021 — Kīlauea, Halema‘uma‘u lava lake at dusk

Lava fountaining activity continues from the western vent in Halema‘uma‘u, within Kīlauea summit caldera, viewed at dusk on October 10, 2021, from the west rim of the crater. Only the western half of the lake surface is active; the eastern half is covered by a cooling, solidified crust. USGS image by B. Carr.

October 10, 2021

October 10, 2021—Kīlauea, fountaining at west vent of Halema'uma'u

Kīlauea summit eruption lava fountain height in Halema‘uma‘u crater on October 10, 2021 was highly variable. A persistent low fountain a few meters (yards) tall was frequently interrupted by larger series of bursts throwing lava more than 15 meters (50 feet) into the air and onto the interior walls of the vent cone. 

Color photograph of volcanic vent
October 10, 2021

October 10, 2021 — Kīlauea, lava fountaining in Halema‘uma‘u

Fountaining at the western vent in Halema‘uma‘u crater, at Kīlauea volcano's summit, was approximately 15 meters (50 feet) high on the evening of October 10, 2021. Spatter from the fountaining would occasionally land on the wall of the vent cone and cool (visible on the right). Lava exited the pond within the cone and entered the lake through a gap on the eastern side of

...
Color photograph of volcanic vent
October 9, 2021

October 9, 2021 — Kīlauea, summit eruptive vent

HVO scientists captured this zoomed-in photo of the western fissure within Halema‘uma‘u through the lens of a laser rangefinder on October 9, 2021. The fissure has formed a horseshoe-shaped spatter cone around its source, with an opening on the east (right) side allowing lava to flow into the active lava lake. The spatter cone was measured to be standing 30 m (98 ft) tall

...
Color photograph of volcanic vent
October 8, 2021

October 8, 2021 — Kīlauea summit eruption

In this overflight photo of the Halema‘uma‘u lava lake, captured on October 8, 2021 and looking from the northeast, two western fissures are visible: one inactive from the December 2020–May 2021 Kīlauea summit eruption (center), and another actively feeding lava into the lake at this time (upper-right). The older fissure is is being partially overlapped by short lava flows

...
Color photograph of active lava lake
October 8, 2021

October 8, 2021 — Kīlauea summit eruption

On the morning of October 8, 2021, HVO scientists completed a routine helicopter overflight of the ongoing eruption within Halema‘uma‘u at the summit of Kīlauea. This overview photo of the lava lake was captured from the northeast, with the erupting western fissure in the right of the frame, and a number of islands from the December 2020–May 2021 lava lake visible in the

...
Color photograph of lava lake and rainbow
October 8, 2021

October 8, 2021 — Kīlauea summit eruption

Though not every ānuenue (rainbow) has an actively erupting volcanic fissure at its end, this one did for a brief moment during HVO scientists' helicopter overflight of the Kīlauea summit on the morning of October 8, 2021. Misty rains were clearing at the time, forming the rainbow and allowing the scientists a mostly clear view of the western fissure feeding lava into

...
Color map showing lava lake rise
October 8, 2021

October 8, 2021 — Kīlauea, Halema‘uma‘u Lava Lake Growth

The eruption within Halema‘uma‘u crater, at Kīlauea's summit, continues to feed a growing lava lake. Photos taken during helicopter overflights of the crater allow HVO scientists to create elevation maps of the rising lake’s surface. The surface area of the Halema‘uma‘u lava lake is now 553000 square meters, or 157 acres. At its widest point, the lake is a kilometer wide (

...
Color map showing lava lake rise
October 8, 2021

October 8, 2021 — Kīlauea, Halema‘uma‘u Lava Lake Growth

The surface area of the Halema‘uma‘u lava lake at the summit of Kīlauea is now 553,000 square meters, or 157 acres. At its widest point, the lake is a kilometer wide (0.62 mile). The colored lines show the perimeter of the lake prior to the recent eruption (pink, data from June 8), one day into the eruption (orange, September 30), and over a week into the eruption (red,

...
Color graph depicting lava lake rise
October 8, 2021

October 8, 2021 — Kīlauea, Halema‘uma‘u Lava Lake Depth

The elevation profiles running East-West across Halema‘uma‘u crater show the rise of the lava lake surface during the ongoing eruption at the summit of Kīlauea. The lake lake is now about 260 m (850 feet) deep, and has risen nearly 30 m (98 feet) above the previous lake surface since the eruption began on September 29. More 15 million cubic meters of lava (4.2 billion

...
Filter Total Items: 2,331
USGS science for a changing world
August 24, 2021

The US Geological Survey Hawaiian Volcano Observatory is raising the volcano alert level/aviation color code for Kīlauea from Advisory/Yellow to Watch/Orange due to earthquake activity in Kīlauea's south caldera region.

USGS science for a changing world
August 24, 2021

Kīlauea volcano is not erupting. The US Geological Survey’s Hawaiian Volcano Observatory has detected an increase in earthquake activity beneath the south part of Kīlauea summit caldera, within Hawaiʻi Volcanoes National Park. The activity began around 4:30 p.m., HST, on August 23 and continued through the night and into the early morning of August 24, 2021.

A photo taken from within Nāhuku (Thurston Lava Tube), near the summit of Kīlauea
August 19, 2021

The 2018 lower East Rift Zone and 35-year-long Puʻuʻōʻō eruptions of Kīlauea had large impacts on the Puna District. Many residents were deeply affected by devastating lava flows, earthquakes, gas emissions, and other volcanic hazards. However, it is important to note that these eruptions are dwarfed compared to some past Kīlauea eruptions including the largest identified subaerial flow—‘Ailā‘au.

GPS campaign survey stations high on the flanks of Mauna Loa offer expansive views of neighboring volcanoes
August 19, 2021

HVO scientists collect high-precision Global Positioning System (GPS) data to assess hazards and understand evolving processes at Mauna Loa.

Over the past few months, HVO geophysicists have been conducting the annual high-precision GPS survey of Kīlauea
August 19, 2021

HVO scientists collect high-precision Global Positioning System (GPS) data to assess hazards and understand evolving processes at Kīlauea.

USGS science for a changing world
August 18, 2021

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.1 earthquake located east of Pāhala on Wednesday, August 18, at 2:02 a.m., HST.

An HVO scientist collects a carbon dioxide sample from an area within Kīlauea caldera emitting elevated levels of volcanic gas
August 16, 2021

HVO scientists—equipped with specialized safety gear—continue the Kīlauea caldera volcanic gas mapping within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

On the morning of August 13, HVO geologists made observations from the western rim of Halema‘uma‘u, at the summit of Kīlauea
August 13, 2021

Kīlauea's summit is no longer erupting; lava supply to the Halemaʻumaʻu lava lake has ceased and sulfur dioxide emissions have decreased to near pre-eruption background levels. HVO field crews—equipped with specialized safety gear—monitor for new changes from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

A man measuring 6 feet 4 inches tall lies on a ballistic block that was thrown from Kīlauea caldera
August 12, 2021

More people were probably killed by the 1790 eruption of Kīlauea than by any other eruption in what is now the United States. Several hundred men, women, and children perished during explosions at the summit of the volcano.  

On Tuesday, August 10, HVO scientists traversed the west and south rims of Halema‘uma‘u, at the summit of Kīlauea
August 11, 2021

Kīlauea's summit is no longer erupting; lava supply to the Halemaʻumaʻu lava lake has ceased and sulfur dioxide emissions have decreased to near pre-eruption background levels. HVO field crews—equipped with specialized safety gear—monitor for new changes from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

Scientist levels surveying instrument on lava flow
August 9, 2021

HVO geophysicists have recently been undertaking a Global Positioning System (GPS) campaign across Kīlauea.

Filter Total Items: 53