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Filter Total Items: 157
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. 

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

This large-scale map shows the distal part of Kīlauea’s active East Rift Zone lava flow in relation to nearby Puna communities.

Thermal overlay of distal part of flow field...
February 19, 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 19 at about 10:30 AM. 

Map of distal part of flow field...
February 19, 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...
February 14, 2015

This satellite image was captured on Saturday, February 14, by the Advanced Land Imager instrument onboard NASA's Earth Observing 1 satellite.

Thermal overlay of distal part of flow field...
February 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 lav£a flow on February 10 at about 12:30 PM. 

Filter Total Items: 107
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Year Published: 2003

Paleointensity in Hawaiian Scientific Drilling Project Hole (HSDP2): Results from submarine basaltic glass

Paleointensity estimates based on the high quality Thellier‐Thellier data from the early Brunhes (420–780 ka) are rare (only 30 in the published literature). The Second Hawaiian Scientific Drilling Project (HSDP2) drill hole recovered submarine volcanics spanning the approximate time period of 420–550 ka. These are of particular interest for...

Tauxe, L.; Love, Jeffrey J.

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Year Published: 2003

Environmental Setting and the Effects of Natural and Human-Related Factors on Water Quality and Aquatic Biota, Oahu, Hawaii

The island of Oahu is the third largest island of the State of Hawaii, and is formed by the eroded remnants of the Waianae and Koolau shield volcanoes. The landscape of Oahu ranges from a broad coastal plain to steep interior mountains. Rainfall is greatest in the mountainous interior parts of the island, and lowest near the southwestern coastal...

Oki, Delwyn S.; Brasher, Anne M.D.
Environmental Setting and the Effects of Natural and Human-Related Factors on Water Quality and Aquatic Biota, Oahu, Hawaii; 2003; WRI; 2003-4156; Oki, Delwyn S.; Brasher, Anne M. D.

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Year Published: 2003

Ground-Water Quality and its Relation to Land Use on Oahu, Hawaii, 2000-01

Water quality in the main drinking-water source aquifers of Oahu was assessed by a one-time sampling of untreated ground water from 30 public-supply wells and 15 monitoring wells. The 384 square-mile study area, which includes urban Honolulu and large tracts of forested, agricultural, and suburban residential lands in central Oahu, accounts for 93...

Hunt, Charles D.
Ground-Water Quality and its Relation to Land Use on Oahu, Hawaii, 2000-01; 2003; WRI; 2003-4305; Hunt, Charles D., Jr.

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Year Published: 2003

Land Use on the Island of Oahu, Hawaii, 1998

A hierarchical land-use classification system for Hawaii was developed, and land use on the island of Oahu was mapped. The land-use classification system emphasizes agriculture, developed (urban), and barren/mining uses. Areas with other land uses (conservation, forest reserve, natural areas, wetlands, water, and barren [sand, rock, or soil]...

Klasner, Frederick L.; Mikami, Clinton D.
Land Use on the Island of Oahu, Hawaii, 1998; 2003; WRI; 2002-4301; Klasner, Frederick L.; Mikami, Clinton D.

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Year Published: 2003

Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2002 to June 30, 2003

Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. This program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream. For this program, rainfall data was collected at two sites, continuous streamflow data at three sites, and...

Young, Stacie T.M.; Ball, Marcael T.J.
Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2002 to June 30, 2003; 2003; OFR; 2003-331; Young, Stacie T. M.; Ball, Marcael T. J.

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Year Published: 2003

Surface Water in Hawaii

Surface water in Hawaii is a valued resource as well as a potential threat to human lives and property. The surface-water resources of Hawaii are of significant economic, ecologic, cultural, and aesthetic importance. Streams supply more than 50 percent of the irrigation water in Hawaii, and although streams supply only a few percent of the...

Oki, Delwyn S.
Surface Water in Hawaii; 2003; FS; 045-03; Oki, Delwyn S.

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Year Published: 2002

Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2001 to June 30, 2002

The State of Hawaii Department of Transportation Stormwater Monitoring Program was implemented on January 1, 2001. The program includes the collection of rainfall, streamflow, and water-quality data at selected sites in the Halawa Stream drainage basin. Rainfall data were collected at two sites, and streamflow data were collected at 3 sites for...

Presley, Todd K.
Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2001 to June 30, 2002; 2002; OFR; 2002-319; Presley, Todd K.

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Year Published: 2002

Reassessment of Ground-Water Recharge and Simulated Ground-Water Availability for the Hawi Area of North Kohala, Hawaii

An estimate of ground-water availability in the Hawi area of north Kohala, Hawaii, is needed to determine whether ground-water resources are adequate to meet future demand within the area and other areas to the south. For the Hawi area, estimated average annual recharge from infiltration of rainfall, fog drip, and irrigation is 37.5 million...

Oki, Delwyn S.
Reassessment of Ground-Water Recharge and Simulated Ground-Water Availability for the Hawi Area of North Kohala, Hawaii; 2002; WRI; 2002-4006; Oki, Delwyn S.

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Year Published: 2002

Streamflow and Erosion Response to Prolonged Intense Rainfall of November 1-2, 2000, Island of Hawaii, Hawaii

A combination of several meteorologic and topographic factors produced extreme rainfall over the eastern part of the island of Hawaii on November 1-2, 2000. Storm rainfall was concentrated in two distinct areas, the Waiakea and Kapapala areas, where maximum rainfall totals of 32.47 and 38.97 inches were recorded. Resultant flooding caused damages...

Fontaine, Richard A.; Hill, Barry R.
Streamflow and Erosion Response to Prolonged Intense Rainfall of November 1-2, 2000, Island of Hawaii, Hawaii; 2002; WRI; 2002-4117; Fontaine, Richard A.; Hill, Barry R.

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Year Published: 2002

Numerical Simulation of Ground-Water Withdrawals in the Southern Lihue Basin, Kauai, Hawaii

Numerical simulations indicate that ground-water withdrawals from the Hanamaulu and Puhi areas of the southern Lihue Basin will result in a decline in water levels and reductions in base flows of streams near proposed new water-supply wells. Most of the changes will be attained within 10 to 20 years of the start of pumping. Except for areas such...

Izuka, Scot K.; Oki, Delwyn S.
Numerical Simulation of Ground-Water Withdrawals in the Southern Lihue Basin, Kauai, Hawaii; 2002; WRI; 2001-4200; Izuka, Scot K.; Oki, Delwyn S.

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Year Published: 2002

Whole-rock and glass major-element geochemistry of Kilauea Volcano, Hawaii, near-vent eruptive products: September 1994 through September 2001

This report presents major-element geochemical data for glasses and whole-rock aliquots among 523 lava samples collected near the vent on Kilauea's east rift zone between September 1994 and October 2001. Information on sample collection, analysis techniques and analytical standard reproducibility are presented as a PDF file, which also includes a...

Thornber, Carl R.; Sherrod, David R.; Siems, David F.; Heliker, Christina C.; Meeker, Gregory P.; Oscarson, Robert L.; Kauahikaua, James P.
Whole-rock and glass major-element geochemistry of Kilauea Volcano, Hawaii, near-vent eruptive products: September 1994 through September 2001; 2002; OFR; 2002-17; Thornber, Carl R.; Sherrod, David R.; Siems, David F.; Heliker, Christina C.; Meeker, Gregory P.; Oscarson, Robert L.; Kauahikaua, James P.

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Year Published: 2002

Streamflow and Suspended-Sediment Loads Before, During, and After H-3 Highway Construction, North Halawa, Haiku, South Fork Kapunahala, and Kamooalii Drainage Basins, Oahu, Hawaii, 1983-99

A long-term study (1983?99) was conducted to determine the effects of the H-3 Highway construction on streamflow and suspended-sediment transport on Oahu, Hawaii. Data were collected at five streamflow-gaging stations before, during, and after construction and at two stream-gaging stations during and after construction. Drainage areas at the seven...

Wong, Michael F.; Yeatts, Daniel S.
Streamflow and Suspended-Sediment Loads Before, During, and After H-3 Highway Construction, North Halawa, Haiku, South Fork Kapunahala, and Kamooalii Drainage Basins, Oahu, Hawaii, 1983-99; 2002; WRI; 2002-4005; Wong, Michael F.; Yeatts, Daniel S.

Filter Total Items: 1,405
Lava entering the ocean
July 6, 2018

Kīlauea Volcano — Kapoho Bay

Ocean entry in Kapoho as viewed from morning helicopter overflight.

Satellite image over crater
July 6, 2018

Kīlauea Volcano — Satellite View of Kīlauea Summit

The WorldView-3 satellite acquired this view of Kīlauea's summit on July 3. Despite a few clouds, the area of heaviest fractures in the caldera is clear. Views into the expanding Halema‘uma‘u crater reveal a pit floored by rubble. HVO, on the northwest caldera rim, is labeled.

Dust rising from inside a crater after a rock collapse
July 5, 2018

Kīlauea Volcano — Dust from Summit Explosion

Rocks generate brown dust as they tumble down the western caldera wall during the collapse explosion event on July 5, 2018.

Dust rising from a crater after a rock collapse
July 5, 2018

Kīlauea Volcano — Collapse and Dust Rising at Halema`uma`u Crater

At 1:20 PM HST on July 5, a collapse explosion event occurred at Kīlauea's summit. The energy released by the event was equivalent to a M5.2 earthquake. The shaking

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A small lavafall in the middle of a lava flow.
July 5, 2018

Kīlauea Volcano — Lavafall Near Kapoho Crater

Near the Kapoho Crater, in the area called Four Corners, the lava channel makes a 90-degree bend. After lava exits the bend, it makes a short drop to form a lavafall. A side channel makes a short surface diversion before rejoining the existing channel.

Levees created from cooled lava
July 5, 2018

Kīlauea Volcano — Lava Levees

Lava, from small overflows, cools and congeals along the banks of the lava channel to build lava levees. The levees also build up as moving lava pushes cooled 

...
Lava entering the ocean with laze plumes rising
July 5, 2018

Kīlauea Volcano — Kapoho Coastline Delta

Lava enters the sea along the Kapoho coastline, building a delta that is now over 555 acres in size.

Aerial photo over Kapoho area showing lava entering ocean and passing residential areas
July 5, 2018

Kīlauea Volcano — Aerial of Kapoho Area

Aerial view of the lava channel and active margins between Kapoho Crater (upper right) and the coast (lower left). The northern margin of the flow field is advancing at several points in the area of Kapoho Ag and Beach Lots (vegetated areas in center of image). Image courtesy of Hawaii County Fire Department.

Lave entering the ocean with laze plumes rising
July 5, 2018

Kīlauea Volcano — Ocean Entry at Kapoho

Having crusted over about 0.8 km (0.5 mi) upchannel from the ocean entry, lava oozes from the flow's

...
July 5, 2018

July 5, 2018, collapse event at Kīlauea Volcano's summit

Since August 4, 2018, Kīlauea Volcano's summit activity has diminished dramatically. But between mid-May and early August, 62 collapse events occurred, with each releasing energy equivalent to a magnitude-5+ earthquake and causing extensive ground shaking in the summit area. On July 5, 2018, USGS video cameras stationed at various summit locations happened to record one of

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July 4, 2018

Kīlauea Volcano — Flows Near Kapoho Ag. and Beach Lots

Near the coast, the northern margin of the flow field is still oozing pasty lava at several points in the area of Kapoho Agricultural and Beach Lots.

Filter Total Items: 1,023
CT scans and photographs of coral collected from reef near polluted groundwater seeps. One set shows more erosion than the other
November 27, 2017

Coral reefs already stressed by ocean acidification are particularly vulnerable to polluted groundwater, according to a recent study by USGS geologist Nancy Prouty and colleagues.

Trained scent-detection dog and dog trainer at work in a taro field at Hanalei National Wildlife Refuge
November 22, 2017

Dogs have great olfactory abilities and wildlife biologists think they can help endangered waterbirds in Hawai‘i. Dogs are being trained to sniff out the endangered ducks (koloa maoli (Anas wyvilliana) and Laysan ducks (A. laysanensis)) that die of avian botulism. 

Greater White-fronted Goose on the North Slope of Alaska
July 17, 2017

Direct encounters with humans can increase the likelihood that nesting geese will lose their eggs to predators, according to a recent study released Monday, July 17.

Image: 'Akiapōlā'au
July 10, 2017

Forest birds on the island of Hawaii are responding positively to being restored in one of the largest, ongoing reforestation projects at Hakalau Forest National Wildlife Refuge, according to a new study released July 10 in the journal Restoration Ecology.

A Laysan Albatross chick in its nest near the coastline at Midway Atoll, Hawaii
June 22, 2017

Sudden flooding hit islands of global importance for Pacific birds highlighting threats and opportunities for conservation planning

Latest upgrade of seismic stations at Kīlauea summit completed...
June 8, 2017

Field engineers at the USGS Hawaiian Volcano Observatory (HVO) recently completed a multi-year effort to upgrade a subset of seismic stations at the summit of Kīlauea Volcano.

HVO's masked geologist heads north to Alaska...
June 5, 2017

Tim Orr accepted a research geology position at the Alaska Volcano Observatory (AVO) in Anchorage, so he's headed north to Alaska. 

Tracking the latest moves of Kīlauea and Mauna Loa...
June 1, 2017

On the Island of Hawai‘i, deformation is measured primarily with three techniques: tiltmeters, GPS (Global Positioning System), and InSAR (Interferometric Synthetic Aperture Radar).

Volcanoes, Landslides, and Angry Gods—A Pacific Northwest Connectio...
May 25, 2017

Both volcanoes and landslides are important for landscape evolution in Hawaii and worldwide. In Washington State, an old legend makes the connection between them.

Side-by-side comparison of the northwest wall of Kīlauea Caldera on a clear day (left) and a day with thick vog (right).
May 18, 2017

Just like smog and fog, this EarthWord is not what you want to see while driving...

HVO's website makeover is more than skin deep...
May 18, 2017

A new structure allows for a more efficient and consistent website, with simplified maintenance that leads to fewer broken links.

 

A geologist remembers the Mount St. Helens eruption 37 years ago...
May 11, 2017

This week's Volcano Watch was written by USGS Hawaiian Volcano Observatory geologist Don Swanson, who worked on Mount St. Helens before and after the 1980 eruption.