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Filter Total Items: 60
Devastation of the coastal city of Banda Aceh, Indonesia, after the 2004 Indian Ocean tsunami.
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.

Methane hydrate
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.

crustose coralline algae
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.

Mount Rainier seen from Puyallup, Washington
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.

USGS science for a changing world logo
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.

USGS science for a changing world logo
Date Published: March 9, 2016

Pacific Islands Water Science Center

This center is one of 48 Water Science Centers in the USGS, and its mission is to collect, analyze and disseminate the impartial hydrologic data and information needed to wisely manage water resources for the people of the United States, the State of Hawaii, and other Pacific Islands.

USGS science for a changing world logo
Date Published: March 9, 2016

Salton Sea Science Office

USGS Salton Sea Science Office works closely with Federal, State, local, nongovernmental, and tribal partners, providing information for management actions. This USGS office has a unique charter to serve as an independent liaison between resource managers and the scientific community. In that capacity the the office provides scientific information and evaluations to decision makers who are...

Attribution: Southwest

Invalid Scald ID.

Date Published: March 2, 2016

Hawaiian Volcano Observatory (HVO)

HVO operates monitoring networks, assesses hazards, and issues notifications of volcanic activity and earthquakes in the State of Hawai‘i. HVO scientists conduct fundamental research on volcanic processes and work to educate the communities at risk. HVO is located in Hawaiʻi Volcanoes National Park on the Island of Hawaii.

Image: Waterfall, Maui, Hawaii
Date Published: November 17, 2015
Status: Active

Webinar: Turning Ecological Stream Classifications into Actionable Science

View this webinar to learn about stream classification efforts in Hawai'i.

Contacts: Ralph Tingley
Thumbnail of a poster which is laid out with photos, images, and text.
Date Published: January 1, 2005
Status: Completed

Mud Damages Hawaiian Coral Reefs

Information about the USGS Pacific Coastal and Marine Science Center's research from 2000-2004, on how mud damages hawaiian coral reefs.

Thumbnail of a poster which is laid out with photos, images, and text.
Date Published: January 1, 2004
Status: Completed

Island-hopping Coral Larvae in Hawaii

Information about the USGS Pacific Coastal and Marine Science Center's 2003 study on island-hopping coral larvae in Hawaii.

Contacts: Curt Storlazzi
Thumbnail of a poster which is laid out with photos, images, and text.
Date Published: January 1, 2001
Status: Completed

Giant Hawaiian Underwater Landslides

Information about the USGS Pacific Coastal and Marine Science Center's studies of giant underwater landslides in 1986 and 1988.

Filter Total Items: 60
Structure datasets for the nation from The National Map
April 20, 2016

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.

Boundaries datasets for the nation from The National Map.
April 19, 2016

Boundaries data or governmental units represent major civil areas including states, counties, Federal, and Native American lands, and incorporated places such as cities and towns.

Illustration related to the the river corridor
April 19, 2016

The National Hydrography Dataset (NHD) and Watershed Boundary Dataset (WBD) are used to portray surface water on The National Map.

3D Lidar Point Cloud Image of San Francisco Bay and Golden Gate Bridge
April 19, 2016

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 Fall.

Digital Elevation Model in the Atchafalaya Basin, LA
April 19, 2016

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.

Fish on seafloor, Offshore Northern California
April 18, 2016

This portal contains U.S. Geological Survey (USGS) video and photography of the seafloor off of coastal California and Massachusetts, and aerial imagery of the coastline along segments of the Gulf of Mexico and mid-Atlantic coasts. These data were collected as part of several USGS Coastal and Marine Geology Program Seafloor Mapping projects and Hurricane and Extreme Storm research.

Orthoimagery of Augusta Ga
April 12, 2016

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.

Small Scale Collection USA
April 12, 2016

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.

Tephra and gas eruption from Mount St. Helens crater with dome
March 17, 2016

Many volcanoes in the U.S. are monitored by arrays of several instruments that detect subtle movements within the earth and changes in gas and water chemistry. The Volcano Hazards Program streams this data to its Volcano Observatories and makes it available on volcano-specific websites.

Ash-rich plume rises out of Halemaʻumaʻu Crater, Kilauea Volcano Hawaiʻi
March 4, 2016

Volcano-alert notifications are produced by Volcano Observatory scientists based on analysis of data from monitoring networks, direct observations, and satellite sensors. They are issued for both increasing and decreasing volcanic activity and include text about the nature of the unrest or eruption and about potential or current hazards and likely outcomes.

USGS
January 1, 2016

This portion of the data release contains image mosaics generated using digitized 1:24K natural color photographs collected in June 2000 by the National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS). These four image mosaics have 1.0 meter-per-pixel resolution, and intermittently cover approximately 53 km (33 mi) of shallow, coastal waters along the west, Kona coast,

USGS
January 1, 2016

Ocean surface current results from a physics-based, 3-dimensional coupled ocean-atmosphere numerical model were generated to understand coral larval dispersal patterns in Maui Nui, Hawaii, USA. The model was used to simulate coral larval dispersal patterns from a number of existing State-managed reefs and large tracks of reefs with high coral coverage that might be good candidates for marine-prot

Filter Total Items: 201
Thermal map of fissure system...
January 1, 2018

Map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of Kīlauea's lower East Rift Zone fissures

Map of Flow Field...
December 13, 2017

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field. 

Thermal map of flow field...
December 12, 2017

Thermal map over the Episode 61g lava flow. 

Pu‘u ‘Ō‘ō Crater annotated map...
November 29, 2017

This map shows Pu‘u ‘Ō‘ō Crater on Kīlauea Volcano's East Rift Zone on November 22, with labels of the crater's main features.

Thermal map of flow field...
November 22, 2017

Thermal map over the Episode 61g lava flow.

Map of flow field...
November 22, 2017

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field.

Map of flow field...
November 1, 2017

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field.

Thermal map of flow field...
October 12, 2017

Thermal map over the Episode 61g lava flow.

Map of flow field...
October 12, 2017

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field. 

Thermal map of flow field...
September 21, 2017

Thermal map over the Episode 61g lava flow. 

Map of flow field...
September 21, 2017

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field.

Thermal map of flow field...
September 1, 2017

Thermal map over the Episode 61g lava flow.

Filter Total Items: 108
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.

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Year Published: 2010

Coral Ba/Ca records of sediment input to the fringing reef of the southshore of Moloka'i, Hawai'i over the last several decades

The fringing reef of southern Moloka’i is perceived to be in decline because of land-based pollution. In the absence of historical records of sediment pollution, ratios of coral Ba/Ca were used to test the hypothesis that sedimentation has increased over time. Baseline Ba/Ca ratios co-vary with the abundance of red, terrigenous sediment visible in...

Prouty, N.G.; Field, M.E.; Stock, J.D.; Jupiter, S.D.; McCulloch, M.
Coral Ba/Ca records of sediment input to the fringing reef of the southshore of Moloka'i, Hawai'i over the last several decades; 2010; Article; Journal; Marine Pollution Bulletin; Prouty, N. G.; Field, M. E.; Stock, J. D.; Jupiter, S. D.; McCulloch, M.

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Year Published: 2009

A Multitracer Approach to Detecting Wastewater Plumes from Municipal Injection Wells in Nearshore Marine Waters at Kihei and Lahaina, Maui, Hawaii

Municipal wastewater plumes discharging from aquifer to ocean were detected by nearshore wading surveys at Kihei and Lahaina, on the island of Maui in Hawaii. Developed in cooperation with the Hawaii State Department of Health, the survey methodology included instrument trolling to detect submarine groundwater discharge, followed by analysis of...

Hunt, Charles D.; Rosa, Sarah N.
A Multitracer Approach to Detecting Wastewater Plumes from Municipal Injection Wells in Nearshore Marine Waters at Kihei and Lahaina, Maui, Hawaii; 2009; SIR; 2009-5253; Hunt, Charles D. Jr.; Rosa, Sarah N.

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Year Published: 2009

Reconnaissance Assessment of the Potential for Roadside Dry Wells to Affect Water Quality on the Island of Hawai'i

The County of Hawai'i Department of Public Works (DPW) uses dry wells to dispose of stormwater runoff from roads. Recently, concern has been raised that water entering the dry wells may transport contaminants to groundwater and affect the quality of receiving waters. The DPW operates 2,052 dry wells. Compiling an inventory of these dry wells and...

Izuka, Scot K.; Senter, Craig A.; Johnson, Adam G.
Reconnaissance Assessment of the Potential for Roadside Dry Wells to Affect Water Quality on the Island of Hawai'i; 2009; SIR; 2009-5249; Izuka, Scot K.; Senter, Craig A.; Johnson, Adam G.

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Year Published: 2009

Ecological Assessment of Wadeable Streams on O`ahu, Hawai'i, 2006-2007: A Pilot Study

In 2006-07, the U.S. Geological Survey (USGS) Pacific Islands Water Science Center (PIWSC), in cooperation with the Hawai'i Department of Health (HDOH), conducted a pilot study as a participant in the U.S. Environmental Protection Agency's (USEPA) Wadeable Streams Assessment (WSA) program. Forty randomly selected sites on perennial streams on O'...

Wolff, Reuben H.; Koch, Linda A.
Ecological Assessment of Wadeable Streams on O`ahu, Hawai'i, 2006-2007: A Pilot Study; 2009; SIR; 2009-5229; Wolff, Reuben H.; Koch, Linda A.

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Year Published: 2009

Rainfall, Discharge, and Water-Quality Data During Stormwater Monitoring, July 1, 2008, to June 30, 2009 - Halawa Stream Drainage Basin and the H-1 Storm Drain, Oahu, Hawaii

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 on Halawa Stream, and to assess the effects from the H-1 storm drain on Manoa Stream. For this program, rainfall data were...

Presley, Todd K.; Jamison, Marcael T.J.
Rainfall, Discharge, and Water-Quality Data During Stormwater Monitoring, July 1, 2008, to June 30, 2009 - Halawa Stream Drainage Basin and the H-1 Storm Drain, Oahu, Hawaii; 2009; OFR; 2009-1162; Presley, Todd K.; Jamison, Marcael T. J.

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Year Published: 2009

An integrated approach to benthic habitat mapping using remote sensing and GIS: An example from the Hawaiian Islands

This chapter documents our effort to map benthic habitats within the KalokoHonokohau National Historic Park, Hawai`i, USA. We produce detailed benthichabitat maps by using a combination of color aerial photography, high-resolution bathymetry, and georeferenced underwater video and still photography. We classify individual habitat polygons using...

Yang, X.; Gibbs, A.E.; Cochran, Susan A.

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Year Published: 2008

Suspended-sediment and nutrient loads for Waiakea and Alenaio Streams, Hilo, Hawaii, 2003-2006

Suspended sediment and nutrient samples were collected during wet-weather conditions at three sites on two ephemeral streams in the vicinity of Hilo, Hawaii during March 2004 to March 2006. Two sites were sampled on Waiakea Stream at 80- and 860-foot altitudes during March 2004 to August 2005. One site was sampled on Alenaio Stream at 10-foot...

Presley, Todd K.; Jamison, Marcael T.J.; Nishimoto, Dale C.
Suspended-sediment and nutrient loads for Waiakea and Alenaio Streams, Hilo, Hawaii, 2003-2006; 2008; OFR; 2007-1429; Presley, Todd K.; Jamison, Marcael T. J.; Nishimoto, Dale C.

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Year Published: 2008

Ground Water on Tropical Pacific Islands - Understanding a Vital Resource

To a casual observer, tropical Pacific islands seem idyllic. Closer scrutiny reveals that their generally small size makes them particularly vulnerable to economic and environmental stresses imposed by rapidly growing populations, increasing economic development, and global climate change. On these islands, freshwater is one of the most precious...

Tribble, Gordon
Ground Water on Tropical Pacific Islands - Understanding a Vital Resource; 2008; CIR; 1312; Tribble, Gordon

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Year Published: 2008

Ground-Water Availability in the Wailuku Area, Maui, Hawai'i

Most of the public water supply in Maui, Hawai'i, is from a freshwater lens in the Wailuku area of the island. Because of population growth, ground-water withdrawals from wells in this area increased from less than 10 Mgal/d during 1970 to about 23 Mgal/d during 2006. In response to increased withdrawals from the freshwater lens in the Wailuku...

Gingerich, Stephen B.
Ground-Water Availability in the Wailuku Area, Maui, Hawai'i; 2008; SIR; 2008-5236; Gingerich, Stephen B.

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Year Published: 2008

The Significance of Accounting Order for Evapotranspiration and Recharge in Monthly and Daily Threshold-Type Water Budgets

Most threshold-type water-budget models account for the loss of water by evapotranspiration before accounting for recharge. Recharge estimates can differ substantially, depending on whether recharge is counted before or after evapotranspiration in the water budget. This disparity is the source of uncertainty and is most pronounced for areas where...

Oki, Delwyn S.
The Significance of Accounting Order for Evapotranspiration and Recharge in Monthly and Daily Threshold-Type Water Budgets; 2008; SIR; 2008-5163; Oki, Delwyn S.

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Year Published: 2008

Rainfall, Discharge, and Water-Quality Data During Stormwater Monitoring, July 1, 2007, to June 30, 2008; Halawa Stream Drainage Basin and the H-1 Storm Drain, Oahu, Hawaii

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 on Halawa Stream and to assess the effects from the H-1 storm drain on Manoa Stream. For this program, rainfall data were...

Presley, Todd K.; Jamison, Marcael T.J.; Young, Stacie T.M.
Rainfall, Discharge, and Water-Quality Data During Stormwater Monitoring, July 1, 2007, to June 30, 2008; Halawa Stream Drainage Basin and the H-1 Storm Drain, Oahu, Hawaii; 2008; OFR; 2008-1233; Presley, Todd K.; Jamison, Marcael T.J.; Young, Stacie T.M.

Filter Total Items: 1,434
September 4, 2018

Kīlauea Lower East Rift Zone

An Unmanned Aircraft Systems overflight yesterday (September 4, 2018) showed a small cone on the floor of the crater within fissure 8. The cone formed as lava erupted from an opening on the surface of the flow that covers the crater floor.

September 3, 2018

Low-Level Spatter on New Pad of Lava

During an overflight of fissure 8 this morning, HVO geologists observed low-level spattering on the new pad of lava within the cone. Slow-moving lava had just barely entered the spillway, but was not advancing down the channel.

August 31, 2018

Time Series of Kīlauea Volcano's Lower East Rift Zone Lava-Flow Maps

During Kīlauea Volcano's lower East Rift Zone (LERZ) eruption, lava-flow maps were generated on a near-daily basis and published on the Hawaiian Volcano Observatory webpage. For the first week of the 2018 LERZ eruption, lava flows proved difficult to map, as they stayed close to the fissures in Leilani Estates, where vegetation obscured aerial views of their margins. Later

...
August 30, 2018

PubTalk 8/2018 — What on Earth is going on at Kilauea Volcano?

Title: What on Earth is going on at Kilauea Volcano?

  • First significant summit explosions in nearly a century
  • Largest summit collapse volume since at least 1800
  • Voluminous fissure eruptions feeding channelized lava flow
  • Unparalleled new opportunities for understanding the volcanic system
August 30, 2018

Kīlauea Volcano's Summit

The Unmanned Aircraft Systems (UAS) team circumnavigates the crater rim at the summit of Kīlauea Volcano, collecting data for digital elevation models that document summit changes. The volume change, from early May 2018 to present, is over 825 million cubic meters (1 billion cubic yards). The vertical collapse of the crater floor is more than 500 m (1600 ft). Limited UAS

...
Before and after views of a water fall.  First shows light flow of water over the falls, the second shows heavy flow.
August 23, 2018

Impact of Hurricane Lane on Wailuku River

Two views from the Rainbow Falls overlook, downstream of the Wailuku River streamgage near Hilo, Hawaii. The image on the left shows a typical base flow of about 35 cubic feet per second (cfs). The image on the right shows the early impact of Hurricane Lane with a flow of about 26,000 cfs taken at 8:35 a.m. HST, August 23, 2018. This U.S. Geological Survey streamgage has

...
August 21, 2018

Kīlauea Volcano's Lower East Rift Zone

An Unmanned Aircraft Systems overflight of fissure 8 on August 21, 2018, showed no incandescence within the cinder cone. Minor amounts of gases, primarily steam, rose from the north wall of the cinder cone and from areas along the lower East Rift Zone. The interior walls of the fissure 8 cone and lava channel are slumping downward and inward. The cinder cone was about 50 m

...
August 20, 2018

Changes Over Time at Kīlauea (April - August 2018)

Changes at the summit of Kīlauea between April 14 and August 20, 2018, were captured by a USGS–Hawaiian Volcano Observatory camera. This time-lapse series includes roughly one image per day. The lava lake within Halema‘uma‘u is visible in April, with overflows onto the caldera floor on April 23. The lava lake drains in early May, followed by explosive activity over the

...
August 17, 2018

View Into Fissure 8 Cinder Cone

The Unmanned Aircraft Systems (UAS) team assessed conditions at the fissure 8 cone and upper lava channel on August 17, 2018. At the time of the flight, the lava pond within the cone had crusted over with no observed incandescence. The reddish-brown rock inside the cone is the result of oxidation; the interaction of heated rock and gases causes black basaltic cinders to

...
August 16, 2018

3D Model of Fissure 8 Cone

This 3-dimensional computer model shows the structure of the fissure 8 cone on Kīlauea Volcano's lower East Rift Zone. The model was created from thermal images acquired during a helicopter overflight on August 15, 2018. The cone is currently about 30 m (100 ft) tall with a broad base. The bright white area within the cone is a small pond of lava, now largely crusted over

...
August 9, 2018

Lava Entering Ocean Near Isaac Hale Beach Park

Lava continues to enter the ocean near the Isaac Hale Beach Park on Kīlauea Volcano's lower East Rift Zone. Although lava output from fissure 8 remains low, the ocean entry was still active during HVO's helicopter overflight on August 9, 2018. Numerous small streams of lava were oozing into the ocean near Ahalanui, creating weak plumes of laze. The southern flow margin

...
New outcrops make good geology
August 6, 2018

New outcrops make good geology

This aerial view of the western part of Kīlauea Volcano's caldera was taken on August 6, 2018. The down-dropped block is faulted about 120 m (400 feet) below the caldera floor. Many 19th-century lava flows are exposed in the fault scarps. Halema‘uma‘u (not visible) is to the left of this photo.

Filter Total Items: 1,428
New outcrops make good geology
March 28, 2019

A good field geologist is an opportunist. Never content with what outcrops are available, she jumps at the chance to see another one, hoping that it will provide a better understanding to some question about what happened in the past.

USGS
March 27, 2019

On March 26, 2019, in response to reduced activity on the volcano, HVO lowered the Volcano Alert Level for Kīlauea's ground-based hazards from ADVISORY to NORMAL.

USGS
March 26, 2019

Kīlauea's Southwest Rift Zone was more volcanically active in the late 18th- to early 19th-centurys than previously assumed.

UAS mission documents conditions at the Overlook vent...
March 26, 2019

The 2018 Kīlauea Volcano lower East Rift Zone eruption was the first time Unmanned Aircraft Systems (UAS) were used by the Federal Government to assist with an eruption response in the U.S. The UAS (drones) surveyed areas that were too hazardous for field crews or manned aircraft to access, collected multiple types of data, and provided 24/7 real-time situational awareness.

Explosive eruption columns of ash rising
March 22, 2019

In February 1924, the surface of the lava lake at Halema‘uma‘u dropped rapidly and disappeared from view. Throughout March and April, the crater floor subsided as magma moved out of the summit reservoir into the East Rift Zone. By May 6, 1924, the floor of Halema‘uma‘u had dropped more than 180 m (about 600 ft) below the crater rim. 

Map of selected earthquakes beneath a portion of southeast Hawaii
March 15, 2019

Early Wednesday morning, just before 1AM on March 13, houses in east Hawai`i began to shake. Without a doubt, it was an earthquake. To those who endured the near-daily shaking from last summer’s collapse events at Kīlauea’s summit, this week’s earthquake was clearly different.

USGS
March 13, 2019

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-5.5 earthquake located beneath Kīlauea Volcano's south flank on Wednesday, March 13, at 12:55 a.m., HST. 

Lava flow thickness 2018
March 7, 2019

Eruption rate (how much lava comes out of the ground per unit time) is probably the best measure of volcanic activity, and the first step in that calculation is to measure lava flow thickness and area. 

fissure 8 on Kīlauea
February 28, 2019

Since the end of the 2018 lower East Rift Zone (LERZ) eruption on Kīlauea Volcano, questions have surfaced concerning how long it will take for the new lava flows to solidify. This is a difficult question to answer, because the initial eruptive temperatures along with many different factors can influence the rate of cooling.

USGS
February 22, 2019

2018 Kīlauea lower East Rift Zone eruption and calderal collapse described in Science paper.

USGS
February 22, 2019

USGS Fact Sheet, written by HVO scientists, won the 2018 Shoemaker Award for Communications Product Excellence for the Small Print category.

Filter Total Items: 53