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: 366
Map of flow field west of Kaohe Homesteads with thermal overlay...
March 10, 2015

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of Kīlauea’s active East Rift Zone lava flow west of Kaohe Homesteads on March 10 at about 10:30 AM. 

Map of distal flow field with thermal overlay...
March 10, 2015

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of the distal part of Kīlauea’s active East Rift Zone lava flow on March 10 at about 10:35 AM.

Map of distal flow field...
March 10, 2015

This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea’s active East Rift Zone lava flow. 

Satellite image of area around front of Kīlauea's East Rift Zone la...
March 3, 2015

This satellite image was captured on Tuesday, March 3, 2015 by the Landsat 8 satellite. 

Map of flow field west of Kaohe Homesteads with thermal overlay...
February 27, 2015

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of Kīlauea’s active East Rift Zone lava flow west of Kaohe Homesteads on February 27 at about 11:35 AM. 

Map of proximal flow field with thermal overlays...
February 27, 2015

This map overlays georegistered mosaics of thermal images collected during a helicopter overflight of Kīlauea’s active East Rift Zone lava flow near Pu‘u ‘Ō‘ō on February 27 at about 11:50 AM. £

Map of distal flow field with thermal overlay...
February 27, 2015

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of the distal part of Kīlauea’s active East Rift Zone lava flow on February 27 at about 11:40 AM. 

Map of distal flow field...
February 27, 2015

This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea’s active East Rift Zone lava flow. 

Map of proximal flow field with thermal overlay...
February 23, 2015

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of Kīlauea’s active East Rift Zone lava flow near Pu‘u ‘Ō‘ō on February 23 at about 12:00 PM.

Map of distal flow field with thermal overlay...
February 23, 2015

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of the distal part of Kīlauea’s active East Rift Zone lava flow on February 23 at about 12:30 PM.

Map of distal flow field...
February 23, 2015

This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea’s active East Rift Zone lava flow.

Small-scale map of flow field...
February 19, 2015

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to lower Puna. 

Filter Total Items: 2,085
Color photograph of road damaged by earthquakes
January 1, 2021

Scientists deploy temporary seismic instruments at Kīlauea on 1/1/2021

On January 1, 2021, with permission from Hawai‘i Volcanoes National Park, HVO researchers set up temporary seismic instruments around Halema‘uma‘u crater to collect data that will help them learn more about how magma travels in the shallow magmatic plumbing system beneath Kīlauea Volcano. In this photo, the field crew hikes along a portion of Crater Rim Drive road that was

...
Color photograph of lava lake crust
January 1, 2021

Kīlauea eruption in Halema‘uma‘u on Jan. 1, 2021

Kīlauea's summit lava lake in Halemaʻumaʻu is continually re-surfacing. Like the 2008-2018 lava lake, the current lava lake is exhibiting crustal foundering, when fragments of solidified lava crust on the surface break and sink back into the liquid portion.  USGS photo by M. Patrick. 

Color photograph of scientist installing instrument in field
January 1, 2021

Scientists deploy temporary seismic instruments at Kīlauea on 1/1/2021

Within an hour of the Kīlauea summit eruption starting on December 20, 2020, HVO's permanent seismic network detected a signal called volcanic tremor. This tremor signal has been continuous since that time, creating an uninterrupted signal that travels through the subsurface as magma degasses and erupts from vents to fill a lava lake at the summit.  This photo shows a an

...
Color photograph of lava lake crust
January 1, 2021

Kīlauea eruption in Halema‘uma‘u on Jan. 1, 2021

Kīlauea's summit lava lake in Halemaʻumaʻu continues to re-surface. This process is called crustal foundering, in which pieces of solidified lava crust on the surface of the lava lake break and sink back into the liquid portion. USGS photo by M. Patrick. 

Color photograph of scientist installing instrument in field
January 1, 2021

Scientists deploy temporary seismic instruments at Kīlauea on 1/1/2021

With the onset of the eruption at Kīlauea summit on December 20, 2020, the HVO monitoring network has been recording volcanic tremor, a signal that travels through the subsurface as magma degasses and erupts from vents to fill a lava lake at the summit. Since the signal is continuous, it can be used to track the migration and storage of magma in Kīlauea's shallow volcanic

...
Color photograph of lava lake margin
January 1, 2021

Kīlauea eruption in Halema‘uma‘u on Jan. 1, 2021

The margins of the lava lake in Halema‘uma‘u are showing a subtle levee around the perimeter. The levees grow from repeated small overflows, and the rafting and piling of pieces of surface crust that fuse together into a barrier that impounds the lake. This results in a "perched" lava lake, and this geometry has been common for lava lakes at Kīlauea's summit and rift zones

...
Color photograph of scientist deploying instrument in field
January 1, 2021

Scientists deploy instruments at Kīlauea summit - 1/1/2021

HVO field crews deployed a dense network of temporary seismic instruments at Kīlauea’s summit on January 1, 2021, and with permission from Hawai‘i Volcanoes National Park. The temporary instruments supplement data already being collected by HVO's permanent seismic network and will help to track the migration and storage of magma in the shallow volcanic plumbing system

...
Color photograph of volcanic vent
January 1, 2021

Kīlauea eruption in Halema‘uma‘u on Jan. 1, 2021

Telephoto view of the west vent area in Halema‘uma‘u, Kīlauea Volcano. The west vents are in the northwestern wall of Halema‘uma‘u crater; intermittent spattering at the vents has constructed a perched pointed cone on the crater wall. USGS photo by M. Patrick. 

Color photograph of volcanic vent
January 1, 2021

Kīlauea eruption in Halema‘uma‘u on Jan. 1, 2021

Another telephoto view of the west vent area in Halema‘uma‘u, Kīlauea Volcano. The west vents are in the northwestern wall of Halema‘uma‘u crater; intermittent spattering at the vents has constructed a perched pointed cone on the crater wall. USGS photo by M. Patrick. 

Color photograph of lava lake
January 1, 2021

Kīlauea eruption in Halema‘uma‘u on Jan. 1, 2021

The western portion of the lava lake in Halema‘uma‘u, Kīlauea Volcano summit. The island has migrated closer to the west vent area, which remains active. USGS photo by M. Patrick. 

Color and gray scale images of tephra
December 31, 2020

Images of tephra from Kīlauea’s newest eruption, collected 12/21/2020

Left: magnified view of erupted material, including Pele’s hair and tears, as seen under a microscope (USGS Photo by K. Lynn on 12/26/2020). Middle: Zoomed in electron image of the tephra, where greyscale indicates the relative abundance of iron (Fe). Very small (less than 0.1 mm [less than 0.004 inches]) clinopyroxene and plagioclase crystals are labeled next to vesicles

...
Color map of volcano
December 31, 2020

December 31, 2020—Kīlauea summit eruption contour map

This map of Halema‘uma‘u at the summit of Kīlauea shows 20 m (66 ft) contour lines (dark gray) that mark locations of equal elevation above sea level (asl). The map shows that the lava lake (approximate area marked in red) has filled 184 m (603 ft) of Halema‘uma‘u since the eruption began at approximately 9:30 p.m. HST on December 20, 2020. USGS map. 

Filter Total Items: 2,265
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.

USGS
February 22, 2019

Information about how to stay informed about Hawaiian volcanoes.

USGS
February 22, 2019

A temporary monitoring camera on the west rim of Kīlauea caldera now provides views looking east toward the bottom of the recently enlarged Halema‘uma‘u.

test flight of an unmanned aerial system
February 21, 2019

With the end of Kīlauea Volcano's 2018 lower East Rift Zone eruption, the Island of Hawai‘i was able, at long last, to say goodbye to strong vog—volcanic smog produced by voluminous sulfur dioxide (SO2) emissions.

USGS
February 19, 2019

January 2019 is Hawaiʻi Island's 10th annual Volcano Awareness Month.