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.

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Filter Total Items: 67
Date published: June 22, 2017
Status: Active

Ecology of Hawaiian Waterbirds

Loss of wetlands, invasive plants, and non-native predators pushed Hawaii’s waterbirds to the brink of extinction by the early 1900s, although population numbers have improved somewhat in recent decades with conservation efforts. Nonetheless, all Hawaiian waterbirds have global population sizes estimated around or below below 2,000 individuals, making them still highly vulnerable to extinction...

Date published: June 14, 2017
Status: Active

Monitoring and Researching Bat Activity at Wind Turbines with Videography

The rapid expansion of wind energy nationwide is an important step toward reducing dependence on non-renewable sources of power.  However, the magnitude of the wildlife impacts at wind energy facilities is a newly recognized threat, and the cumulative long-term impacts to various bat species are of increasing concern.  It is estimated that more than 450,000 bat fatalities now occur each year...

Date published: May 10, 2017
Status: Active

Disease Ecology In the Pacific Basin: Wildlife and Public Health Concerns

Both wildlife and human health in Hawai‘i and other island ecosystems in the Pacific Basin face continued threats from introductions of diseases and vectors. Accidental introduction of mosquito-borne avian malaria and pox virus to Hawai‘i is an outstanding example of how biological invasions can have a profound effect on endemic wildlife. The geographic distribution, density, and community...

Date published: March 16, 2017
Status: Active

Population Genetics and Emergency Management of Two Kauai Island Endangered Species

The Challenge: The Akeke’e (Loxops caeruleirostris) and the Akikiki (Oreomystis bairdi), two species of Hawaiian honeycreeper, are critically endangered bird species endemic to high elevation ohia forests on the Hawaiian island of Kauai.  Both species have suffered severe population declines and range contractions in recent decades.  Akeke’e are currently thought to number ca. 950 wild...

Date published: December 7, 2016
Status: Active

Uncovering the Ecosystem Service Value of Carbon Sequestration in National Parks

The National Park Service (NPS) preserves and protects more than 84 million acres of important historic, cultural, and natural resources across 401 sites for the enjoyment of present and future generations. Protected resources and landscapes managed by the National Park Service contribute to the societal welfare of the American public, reflected by ecosystem service values derived from their...

Date published: December 4, 2016
Status: Active

Biology, Impacts and Control of Invasive Reptiles in the Everglades

Invasive species are considered to be second only to habitat degradation in terms of negative impacts on the Earth’s ecosystems, and our scientists make up a significant proportion of the global expertise in the rapidly-growing problem of invasive reptiles.

Date published: December 1, 2016
Status: Active

USGS Brown Treesnake Laboratory and Rapid Response Facility - Guam

USGS scientists and staff associated with the Brown Treesnake Project are co-located at the Guam National Wildlife Refuge at the northern end of Guam in the western Pacific Ocean. Project staff work on developing and testing control tools for invasive brown treesnakes, as well as understanding their impacts on Guam's ecosystems. Project staff also lead the multi-agency Brown Treesnake Rapid...

Date published: October 19, 2016
Status: Active

Survival and Reintroduction of the Laysan Teal

The Challenge: The Laysan Teal is an endangered, endemic, Hawaiian dabbling duck that has been pushed to the brink of extinction numerous times. The previous range includes the Main and Northwestern Hawaiian Islands, and its current range is less than 10 sq. km within the National Wildlife Refuges of Papahānaumokuākea Marine National Monument. This non-migratory waterfowl was eliminated from...

Date published: July 26, 2016
Status: Active

HDgov: Multi-agency Website for Human Dimensions of Natural Resources

HDgov is an interactive and mobile-responsive online portal to interagency, academic, and non-government resources focused on the human dimensions of natural resource management. The web portal provides easy access to tools, publications, data, and methods that help ensure that the people side of natural resources is considered throughout the entire natural resource management process. The...

Date published: July 26, 2016
Status: Active

National Park Service Visitor Spending Effects

The National Park Service (NPS) manages the Nation’s most iconic destinations that attract millions of visitors from across the Nation and around the world. Trip-related spending by NPS visitors generates and supports a considerable amount of economic activity within park gateway communities. USGS economists collaborate with the National Park Service social science program to estimate NPS...

Date published: July 21, 2016
Status: Active

North American Waterfowl Management Plan

The ultimate success of North American Waterfowl Management Plan (NAWMP) depends on maintaining relevance to stakeholders and society. In order to be relevant, a first step is to better understand what people value in regard to waterfowl and their habitats. 

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...

Filter Total Items: 89
Date published: June 18, 2018

Northwestern Hawaiian Islands Sea-level Rise Scenarios and Models 2010-2015

This data release consists of two ESRI geodatabases that store inundation areas for various future scenarios of sea-level rise, groundwater rise, and storm waves for Laysan Island and Midway Atoll in the Northwestern Hawaiian Islands.

Date published: March 23, 2018

HAVO Montane Ohia Diameter and Cavity Data 2017

We quantified the availability of breeding habitat of the endangered Hawaiian Akepa (Loxops coccineus). The species is thought to nest excusively in natural cavities within mature ohia (Metrosideros polymorpha) trees but birds commonly occur in short stature trees that presumably do not have any natural cavities because of their polyploidal (many-branched) structure.

Date published: October 24, 2017

Hawaii Land Cover and Habitat Status

These two raster data layers depict the land cover and degree of human disturbance to plant communities on the seven main Hawaiian Islands, and were developed as part of a comprehensive USGS assessment of carbon sequestration potential by natural ecosystems in the State of Hawaii.

Date published: October 24, 2017

Kanakaleonui Bird Corridor Montane Plants 2016

The datasets used in the the research project entitled, "Facilitating Adaptation in Montane Plants to Changing Precipitation along an Elevation Gradient," are presented. Report available.

Date published: October 24, 2017

Hawaiian Islands Coastal Vegetation Survey 2013-2015

 

This dataset provides information on the current status and various other habitat and descriptive attributes of the native coastal vegetation for seven of the main Hawaiian Islands (i.e., does not include Ni`ihau). Report available.

Date published: October 1, 2017

Oahu Tsunami Evacuation Dashboard

Tsunami waves created by earthquakes far from Hawai’i arrive hours later along Hawaiian shorelines but can be difficult to escape if everyone uses their cars to evacuate. Working with the Hawai’i Emergency Management Agency, researchers with the U.S. Geological Survey (USGS) used computer modeling to identify areas where people should be able to evacuate on foot in less than 15 minutes. 

Date published: September 1, 2017

National Water Information System web interface (NWISweb)

The National Water Information System (NWIS) web application provides access to real-time and historical surface-water, groundwater, water-quality, and water-use data collected at approximately 1.5 million sites across all 50 states.

Date published: August 24, 2017

Coastal Change Hazards Portal

Interactive access to coastal change science and data for our Nation’s coasts. Information and products are organized within three coastal change hazard themes: 1) extreme storms, 2) shoreline change, and 3) sea-level rise. Displays probabilities of coastal erosion.

Date published: April 25, 2017

Coral growth parameters and seawater chemistry from Kahekili, west Maui, Hawaii

This data release contains time-series of seawater carbonate chemistry variables, including salinity, dissolved inorganic nutrients, pH, total alkalinity, and dissolved inorganic carbon from sites along Kahekili Beach Park, west Maui, Hawai‘i. It also contains data from coral cores collected from the shallow reef at Kahekili in July 2013 and analyzed for coral growth parameters and geochemical...

Date published: January 1, 2017

Seawater carbonate chemistry, Kahekili, west Maui

Time-series of seawater carbonate chemistry variables, including salinity, dissolved inorganic nutrients, pH, total alkalinity, and dissolved inorganic carbon from sites along Kahekili Beach Park, west Maui near submarine groundwater seeps and living coral reefs. Samples for seawater were collected by pumping bottom water from the seafloor using a peristaltic pump and collecting discr

Date published: January 1, 2017

Olowalu chronology and geochemistry time-series, West Maui

Chronology and time-series geochemistry data of a coral core collected from Olowalu, West Maui, Hawaii. The chronology is based on density banding, radiocarbon bomb-curve, and uranium thorium dating techniques. The geochemistry time-series data contains major and minor elements over the length of the coral life span, as measured from laser ablation inductively coupled mass spectrometry

Filter Total Items: 367
Color map of topography
January 6, 2021

This graphic depicts the changes to Kīlauea Volcano's summit, as a result of the ongoing eruption, between December 26, 2020, and January 5, 2021. 

Color map of volcano
December 31, 2020

December 31, 2020—Kīlauea summit eruption contour map showing lava lake level and elevations of features within the caldera

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.

Filter Total Items: 118
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Year Published: 2012

Development of invertebrate community indexes of stream quality for the islands of Maui and Oahu, Hawaii

In 2009-10 the U.S. Geological Survey (USGS) collected physical habitat information and benthic macroinvertebrates at 40 wadeable sites on 25 perennial streams on the Island of Maui, Hawaiʻi, to evaluate the relations between the macroinvertebrate assemblages and environmental characteristics and to develop a multimetric invertebrate community...

Wolff, Reuben H.

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Year Published: 2012

Measurements of seepage losses and gains, East Maui Irrigation diversion system, Maui, Hawaiʻi

The U.S. Geological Survey conducted a field study from March to October 2011 to identify ditch characteristics and quantify seepage losses and gains in the East Maui Irrigation (EMI) diversion system, east Maui, Hawaiʻi. The EMI diversion system begins at Makapipi Stream in the east and ends at Māliko Gulch in the west. It consists of...

Cheng, Chui Ling
Measurements of seepage losses and gains, East Maui Irrigation diversion system, Maui, Hawaiʻi; 2012; OFR; 2012-1115; Cheng, Chui Ling

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Year Published: 2012

Sources of suspended sediment in the Waikele watershed, Oʻahu, Hawaiʻi

Data from streamflow/sediment gages and measurements of changes in channel-bed sediment storage were gathered between October 1, 2007, and September 30, 2010, to assess the sources of suspended sediment in the Waikele watershed, Oʻahu, Hawaiʻi. Streamflow from the watershed averaged 33 cubic feet per second during the study period, with...

Izuka, Scot K.
Sources of suspended sediment in the Waikele watershed, Oʻahu, Hawaiʻi; 2012; SIR; 2012-5085; Izuka, Scot K.

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Year Published: 2012

Groundwater availability in the Lahaina District, west Maui, Hawai'i

Most of the public water supply in the Lahaina District, west Maui, Hawai'i, is pumped from a freshwater lens in volcanic rocks. Because of population growth, groundwater withdrawals from wells in this area are expected to increase from about 5.8 million gallons per day in 2007 to more than 11 million gallons per day by 2030. Currently (2011), the...

Gingerich, Stephen B.; Engott, John A.
Groundwater availability in the Lahaina District, west Maui, Hawai'i; 2012; SIR; 2012-5010; Gingerich, Stephen B.; Engott, John A.

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Year Published: 2012

Numerical simulation of flow in deep open boreholes in a coastal freshwater lens, Pearl Harbor Aquifer, O‘ahu, Hawai‘i

The Pearl Harbor aquifer in southern O‘ahu is one of the most important sources of freshwater in Hawai‘i. A thick freshwater lens overlays brackish and saltwater in this coastal aquifer. Salinity profiles collected from uncased deep monitor wells (DMWs) commonly are used to monitor freshwater-lens thickness. However, vertical flow in...

Rotzoll, Kolja
Numerical simulation of flow in deep open boreholes in a coastal freshwater lens, Pearl Harbor Aquifer, O‘ahu, Hawai‘i; 2012; SIR; 2012-5009; Rotzoll, Kolja

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Year Published: 2011

From ridge to reef—linking erosion and changing watersheds to impacts on the coral reef ecosystems of Hawai‘i and the Pacific Ocean

Coral reef ecosystems are threatened by unprecedented watershed changes in the United States and worldwide. These ecosystems sustain fishing and tourism industries essential to the economic survival of many communities. Sediment, nutrients, and pollutants from watersheds are increasingly transported to coastal waters, where these contaminants...

Stock, Jonathan D.; Cochran, Susan A.; Field, Michael E.; Jacobi, James D.; Tribble, Gordon
From ridge to reef—linking erosion and changing watersheds to impacts on the coral reef ecosystems of Hawai‘i and the Pacific Ocean; 2011; FS; 2011-3049; Stock, Jonathan D.; Cochran, Susan A.; Field, Michael E.; Jacobi, James D.; Tribble, Gordon

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Year Published: 2011

A water-budget model and assessment of groundwater recharge for the Island of Hawaiʻi

Concern surrounding increasing demand for groundwater on the Island of Hawaiʻi, caused by a growing population and an increasing reliance on groundwater as a source for municipal and private water systems, has prompted a study of groundwater recharge on the island using the most current data and accepted methods. For this study, a daily water...

Engott, John A.
A water-budget model and assessment of groundwater recharge for the Island of Hawaiʻi; 2011; SIR; 2011-5078; Engott, John A.

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Year Published: 2011

Potential effects of roadside dry wells on groundwater quality on the Island of Hawai'i-Assessment using numerical groundwater models

Widespread use of dry wells to dispose of roadside runoff has raised concern about the potential effects on the quality of groundwater on the Island of Hawai‘i. This study used semi-generic numerical models of groundwater flow and contaminant transport to assess the potential effect of dry wells on groundwater quality on the Island of Hawai...

Izuka, Scot K.
Potential effects of roadside dry wells on groundwater quality on the Island of Hawai'i-Assessment using numerical groundwater models; 2011; SIR; 2011-5072; Izuka, Scot K.

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Year Published: 2011

Small explosion from new vent at Kilauea’s summit

At 0258 Hawaii‐Aleutian Standard Time (HST) on 19 March 2008, a small explosion scattered altered and fresh lithic debris across a 40‐hectare area at the summit of Kilauea volcano. This explosion, the first recorded there since 1924, issued from a vent about 35 meters wide along the east wall of Halema'uma'u Crater. Ballistic fragments—the largest...

Wilson, David C.; Elias, Tamar; Orr, T.; Patrick, Matthew R.; Sutton, Jeff; Swanson, Don
Wilson, David, Elias, Tamar, Orr, Tim, Patrick, Matt, Sutton, Jeff, and Swanson, Don, 2008, Small explosion from new vent at Kilauea’s summit: Eos Transactions of the American Geophysical Union, v. 89, p. 203

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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.

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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.

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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.

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Color photograph of crater
July 2, 2021

View of Halema‘uma‘u at Kīlauea summit - July 2 2021

A view looking north into Halema‘uma‘u on July 2, 2021. Although eruptive activity has paused at the summit of Kīlauea, HVO geologists still monitor the lava lake and summit area regularly. Lava lake surface depths remain the same over the past few weeks. The field crew on July 2 heard two rockfalls originating slightly east (right) of the field of view from the Halema‘uma

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Color map of volcanoes
July 1, 2021

Volcanoes in Canada?

At left, a map of select recent volcanoes and volcanic areas in Canada (volcano location data from: Global GIS: volcanoes of the world; volcano basic data. [Shapefile]. American Geological Institute. Retrieved from https://earthworks.stanford.edu/catalog/harvard-glb-volc). Right top, Eve Cone, a cinder

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Eruptive activity has paused at the summit of Kīlauea, but volcanic gases are still seen emanating from the lava lake
June 25, 2021

Kīlauea summit on June 25, 2021

Blue-tinged gases are seen above the lava lake in Halema‘uma‘u crater in this image taken from the southwest rim on June 25, 2021, at 12:37 p.m. HST. Although eruptive activity has paused at the summit of Kīlauea, sulfur dioxide-rich gases can still be seen emanating from the lava lake, primarily along the northern margin but also at the west vent and along the southern

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webcam image of shield volcano
June 17, 2021

[MKcam] - Mauna Loa's Summit and Northeast Rift Zone

This image is from a research camera positioned on Mauna Kea. The camera looks south toward the summit and Northeast Rift Zone of Mauna Loa.

Animated GIF showing past 24 hours of live webcam views of shield volcano
June 16, 2021

[MKcam] - Mauna Loa's Summit and Northeast Rift Zone from Mauna Kea

Last 24 Hours - Live Image of Mauna Loa's Summit and Northeast Rift Zone from Mauna Kea [MKcam].

Disclaimer: The webcams are operational 24/7 and faithfully record the dark of night if there are no sources of incandescence or other lights. Thermal webcams record heat rather than light and get better views through volcanic gas. At times, clouds and rain obscure

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A view of Halema‘uma‘u on June 11, 2021, at 12:20 p.m. HST
June 11, 2021

Kīlauea summit on June 11, 2021

A view of Halema‘uma‘u on June 11, 2021, at 12:20 p.m. HST. Although eruptive activity has paused at the Kīlauea summit, HVO geologists still monitor the lava lake and summit area regularly. They make observations to note any physical changes in the landscape or visual changes in gas emissions. Field crews also look and listen for rockfalls and measure the depth of the

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On June 8, 2021, the USGS Hawaiian Volcano Observatory conducted a routine helicopter overflight and fieldwork at the summit of
June 8, 2021

Kīlauea summit on June 8, 2021

On June 8, 2021, the USGS Hawaiian Volcano Observatory conducted a routine helicopter overflight and fieldwork at the summit of Kīlauea. Here, a geophysicist returns to the helicopter after making Global Positioning Systems (GPS) measurements. These surveys measure small changes in the ground surface caused by subsurface magma movement. This scientist carries a GPS antenna

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A view of the crusted over lava lake within Halema‘uma‘u at Kīlauea summit
June 8, 2021

Kīlauea summit on June 8, 2021

A view of the crusted over lava lake within Halema‘uma‘u at Kīlauea summit, taken during a helicopter overflight on June 8, 2021. No incandescence (red lava) has been visible on the solidified lava lake surface for over two weeks. Light degassing continues in a few areas around the margin of the lava lake, mainly along the north crater wall (bottom left). USGS photo taken

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June 8, 2021

Routine overflight of Halema`uma`u crater

The eruption in Halema`uma`u crater, at the summit of Kilauea, is no longer active. The lava lake that was active between December 2020 and May 2021 remains solidified at the surface. A routine summit overflight observed no signs of residual incandescence in cracks, and only a diffuse gas plume rising from the northern portion of the lake.
 

No eruptive activity or major changes were observed during HVO's Kīlauea summit monitoring shift on June 8, 2021
June 8, 2021

Kīlauea summit on June 8, 2021

No eruptive activity or major changes were observed during a USGS Hawaiian Volcano Observatory Kīlauea summit monitoring shift on June 8, 2021. An area near the north wall of Halema‘uma‘u continues to visibly emit gases, though the eruption has paused. The most recent sulfur dioxide emission rate, measured on June 4, remains slightly elevated at 54 tonnes per day. USGS

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Portions of Crater Rim Drive, damaged during the 2018 Kīlauea summit collapse, are visible from the south rim of Halema‘uma‘u
June 8, 2021

Kīlauea summit on June 8, 2021

Portions of Crater Rim Drive, which was damaged during the 2018 Kīlauea summit collapse, are visible from the south rim of Halema‘uma‘u. The lava lake within Halema‘uma‘u and the east wall of Halema‘uma‘u crater are visible in the background. This area of Hawai‘i Volcanoes National Park remains closed to the public due to hazardous conditions. With permission from the

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A close-up Unoccupied Aircraft Systems (UAS) photo of the inactive western fissure within Halema‘uma‘u
June 3, 2021

UAS photo of the inactive western fissure — Halema‘uma‘u, June 3, 2021

This close-up Unoccupied Aircraft Systems (UAS) photo of the inactive western fissure within Halema‘uma‘u was captured on Thursday, June 3, 2021, at the summit of Kīlauea. The recent pause in the eruption has allowed the USGS Hawaiian Volcano Observatory (HVO) UAS pilots to safely photograph the eruptive features from new angles. For scale, the tallest parts of the western

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Continuously recording Global Positioning System (GPS) equipment installed on the south side of the Island of Hawai‘i
July 22, 2021

Many people living in the Hawaiian Islands are accustomed to feeling occasional earthquakes since the State of Hawaii is one of the most seismically active locations in the United States. Unlike some other earthquake-prone places in the U.S., for example California, where the earthquakes are related to tectonic plates sliding past each other, our earthquakes are related to volcanoes.  

Color photograph of volcanic vent
July 19, 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.

Black and white maps of lava flow
July 15, 2021

The most recent page in Mauna Loa’s eruptive history was written in 1984. The eruption began in March of 1984, about a decade after the 1975 summit eruption (the topic of last week’s “Volcano Watch” article). Here’s a quick look at how the eruption proceeded and its impacts on residents as gleaned from contemporaneous newspaper accounts.  

Hawaiian Volcano Observatory geologist uses a laser rangefinder to survey points across the solidified lava lake surface
July 12, 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.

Aerial view of a portion of the north flank of Mauna Loa, looking north
July 8, 2021

Mauna Loa erupted forty-six years ago this week, on July 5–6, 1975, in a 20-hour event with vents confined to the summit region (the area above 3,660 m/12,000 ft) and lava flows descending to just below 3,170 m (10,400 ft). This was the first eruption in 25 years, at the time the longest quiet stretch since 1843 (we are currently in the longest stretch at 37 years and counting). 

USGS science for a changing world
July 7, 2021

A magnitude-4.2 earthquake located to the west of the Island of Hawai‘i, was reported by the U.S. Geological Survey’s Hawaiian Volcano Observatory (HVO) on Wednesday, July 7, 2021, at 7:41 a.m. HST.

USGS science for a changing world
July 5, 2021

A magnitude-5.2 earthquake located to the north of the Island of Hawai‘i, was recorded by the U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) on July 5, at 1:43 p.m. HST.

Color photograph of crater
July 5, 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.

Color map of volcanoes
July 1, 2021

Happy Canada Day/Bonne Fête du Canada! While some past "Volcano Watch" articles have had a July 4th theme for the USA, this year we’re taking the opportunity to ensure readers know that our neighbors to the north have volcanoes, too—including potentially active ones. 

Eruptive activity has paused at the summit of Kīlauea, but volcanic gases are still seen emanating from the lava lake
June 28, 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.

Ninety seconds of raw seismic data from four seismic stations around Kīlauea summit.
June 24, 2021

The journey from volcanic repose to a climactic eruption is like a mystery movie that keeps you at the edge of your seat. The story is filled with twists and turns that often lead to dead ends.  

USGS science for a changing world
June 17, 2021

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.5 earthquake located beneath the south part of the Island of Hawai‘i, in the district of Kaʻū, on Thursday, June 17, at 4:32 p.m., HST.

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