Unified Interior Regions

Hawaii

States L2 Landing Page Tabs

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June 26, 2003

Lava cascade

Same cascade as in first clip, but viewed more from side to see lava falling down cliff and spreading across surface of lava delta. Similar view to still image taken at 0548 today.

June 26, 2003

Surging cascade on steep cliff face

Surging cascade on steep cliff face. Note that surges override part of cascade next to cliff, which is slowed by friction with the cliff.

June 21, 2003

Lava in channeled breakout

Lava in channeled breakout from nearby tumulus flowing rapidly down steep slope before spreading out on flat ground. Same channel as shown in last two stills for today. Width of channel, about 2 m.

June 7, 2003

Gushing start of lava cascade

Gushing start of cascade shown in image taken at 0553. Lava comes from crusted flow to right. Width of flowing lava, about 1 m.

June 7, 2003

Lava flow

Downstream from first clip about 2 m. Same as shown in image taken at 0554.

June 1, 2003

Two strands of flowing lava come together

Two strands of flowing lava come together to form single cascade on upper part of old sea cliff at Highcastle. Still taken at 0546 shows same scene.

May 29, 2003

Spreading and advancing breakout

Spreading and advancing breakout, the same as that shown in 0545 still image for today. Width of view, about 2 m.

May 29, 2003

Spreading and advancing breakout

Closer view of spreading and advancing breakout shown above. Width of view, about 0.6 m.

May 29, 2003

Rapidly moving and changing breakout in Highcastle lobe

Rapidly moving and changing breakout in Highcastle lobe. Still taken today at 0603 is of this breakout. Width of view, about 2.5 m.

May 29, 2003

Rapidly moving and changing breakout in Highcastle lobe

Continuation and further development of rapidly moving and changing breakout in Highcastle lobe. Still taken today at 0603 is of this breakout. Width of view, about 2.5 m.

May 23, 2003

Two converging toes

Two converging toes, the same as those shown in last two still images for today. Width of view, about 1.5 m.

April 19, 2003

Lava moving rapidly at front of breakout

Lava moving rapidly at front of breakout 880 m north of coconut grove. Width of view, about 1.5 m.

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USGS
May 6, 1999

The shaking was finally over. Lower Puna returned to normal following the calamitous episode of ground cracking and subsidence in April 1924. But it was only the calm before the storm.
 

USGS
April 29, 1999

As we enter the month of May, we are remiss in not remembering that April was "Tsunami Awareness Month". April was chosen as "Tsunami Awareness Month" because the deadliest tsunami to strike the Hawaiian Islands occurred on April 1, 1946. What is often overlooked is that the largest and deadliest locally generated tsunami also occurred in the month of April.
 

USGS
April 22, 1999

After an earthquake felt by residents of Hawai`i County, we at the U S Geological Survey's Hawaiian Volcano Observatory are often asked what the earthquake means or indicates in terms of the volcano's behavior. It is beyond our ability to know the detailed implications of a single earthquake event for the complex and inter-related volcanic and tectonic processes that shape our island.

USGS
April 16, 1999

At 2:56 PM local time, the Hawaiian Volcano Observatory seismographic network recorded a moderate earthquake from the Ka‘ū district of the Island of Hawai‘i.

USGS
April 15, 1999

Boaters, hikers, pilots, and other outdoor enthusiasts can use hand-held Global Positioning System (GPS) receivers to locate themselves or to navigate to a point of known position. Volcanologists routinely use hand-held GPS receivers to map lava flows and other volcanic features. 

USGS
April 8, 1999

An ancient Japanese proverb says that the most recent disaster fades from memory just before the next one strikes. Recently our friend Garret Hew of East Maui Irrigation inquired about the great 1938 Maui earthquake. That's good news; that earthquake hasn't faded from memory yet.
 

USGS
April 1, 1999

It started innocently enough. The long-lived lava lake disappeared from Halema`uma`u on February 21. Seventy-eight earthquakes were recorded in March, many along Kīlauea's east rift zone as far as 45 km (27 miles) from HVO; one on the 29th was felt in Hilo.

USGS
March 25, 1999

Earth scientists know a lot about Mauna Loa above sea level but much less about it under water. Studies have naturally focused on the easily accessible island, where one can directly observe and sample rock exposures, gauge the time between eruptions, and trace evolutionary changes in the chemical makeup of the lava flows. 

USGS
March 18, 1999

One common saying in the real estate business is that location is everything. This is particularly true from both geological and biological standpoints here in Hawaii. The Hawaiian hot spot has produced one of the most isolated island chains in the world, with some benefits not often appreciated. One of them is the natural quarantine imposed by more than 3000 km (2,000 miles) of open ocean.

USGS
March 11, 1999

Kīlauea's summit magma chamber is connected to the rift-zone vents like a water tank linked by hose to an irrigation system. The hose comprises the dikes that lie at 3-4 km depth along the trace of the rift zones. 

USGS
March 4, 1999

Among the many tools earth scientists use, the measurement of gravity variations over the earth's surface is one of the most useful for studying Hawaiian volcanoes. You're surprised to hear that gravity is not a constant?
 

USGS
February 25, 1999

Some readers will know that the largest eruption in the world during the 20th century took place in Alaska in 1912, producing the Valley of Ten Thousand Smokes near Mount Katmai (13 cubic kilometers; 3.1 cubic miles). These same readers may also know that the second largest eruption of this century formed the caldera at Mount Pinatubo, Philippines, in 1991 (5.3 cubic kilometers; 1.3 cubic miles).