Photos 7, page 27
3/5 Eruption (and then some!)
|More stuff from the HVO update page...
9 March 2011
The western vent complex of Kamoamoa continues to erupt
The eastern vent complex of the
Kamoamoa eruption was inactive today,
but it continues to emit a thick gas plume.
The western vent complex continues to
erupt, and had been doing so for about
30 hours as of the time of this photo.
Lava erupting from the vent complex is
flowing into a channel with levees.
The channelized flow from the western
vent complex advanced significantly
downslope through forest within the
Hawai`i Volcanoes National Park.
Left. By early this morning, the front of
the 'a'ā flow fed from the western vent
had intercepted the edge of the
Mother's Day flow, which was
emplaced in 2002-2004. The flow
advanced about 2.9 km (1.8 miles) in
Right. The front of the advancing 'a'ā
flow is about 4 m (13 ft) thick.
HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
Thursday, March 10, 2011 7:18 AM HST (Thursday, March 10, 2011 17:18 UTC)
Activity Summary for past 24 hours: On the east rift zone, the March 5 Kamoamoa fissure eruption decreased in activity through
yesterday afternoon and paused by 10:30 p.m. At the summit, the lava lake remained deep below the rim of the vent inset within
the east wall of Halema`uma`u Crater. East rift zone seismicity, summit seismicity, and sulfur dioxide emissions decreased but all
Past 24 hours at Kilauea summit: The lava level remained very deep (estimated at 220 m or 720 ft) and mostly out of direct
webcam view within the vent inset within the east wall of Halema`uma`u Crater. The summit tiltmeter network recorded inflation
starting at 6 pm last night. Seismic tremor levels remained significantly elevated.
Three earthquakes were strong enough to be located within Kilauea volcano - two beneath the summit caldera and one on south
Past 24 hours at the middle east rift zone vents: The fissure eruption that started March 5 within Hawai`i Volcanoes National
Park has paused. Lava within the perched channel fed by low fountains started to recede after 5 pm and spattering stopped by
10:30 pm yesterday.
The tiltmeter on the north flank of Pu`u `O`o recorded continuing deflation. Seismic tremor levels have decreased significantly
around Pu`u `O`o Crater but remained elevated.
10 March 2011
The east rift zone eruption is currently in a hiatus
The east rift zone eruption is currently in
a hiatus. The east and west Kamoamoa
fissures are still fuming, but no lava is
erupting. Pu`u `Ō `ō is the fuming cone
in the background.
Fume from Pu`u `Ō `ō has diminished
enough to see a portion of the rubble-
filled crater floor.
Gobs of spatter solidified in the remaining
trees. The spatter was erupted from the
first fissure to open on March 5.
Ground cracks between the east and
west Kamoamoa fissure segments.
Geologist is about 6 ft tall.
HAWAIIAN VOLCANO OBSERVATORY CURRENT STATUS REPORT
Thursday, March 10, 2011 5:13 PM HST (Friday, March 11, 2011 03:13 UTC)
The Kamoamoa fissure eruption on Kilauea Volcano's east rift zone has paused. Based on Webcam images, lava stopped
erupting from the western end of the fissure late last night. Direct observations by HVO scientists in the field today confirmed that
no lava was erupting from either end of the fissure.
East rift zone SO2 emissions continue to decline. Summit SO2 emissions today were around 500 tonnes/day.
Seismic tremor was declining, but remained elevated above pre-Kamoamoa eruption levels at Kilauea's summit and the
Kamoamoa eruption site.
Overnight, the summit inflated, but at noon today, tilt showed deflation similar to that observed during DI events. On the east rift
zone, deflation continues.
At Kilauea's summit, the lava lake within the Halema'uma'u Crater vent was not visible this morning, most likely a result of being
obscured by rubble.
HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
Friday, March 11, 2011 7:02 AM HST (Friday, March 11, 2011 17:02 UTC)
Activity Summary for past 24 hours: There was no active lava visible on Kilauea volcano. On the east rift zone, the March 5
Kamoamoa fissure eruption was still paused. At the summit, the bottom of the deep vent inset within the east wall of
Halema`uma`u Crater was covered with rubble and lava was no longer visible. Summit seismicity and sulfur dioxide emissions
Past 24 hours at Kilauea summit: The bottom of the deep vent inset within the east wall of Halema`uma`u Crater was covered
with rubble when viewed from the air yesterday. The summit tiltmeter network recorded DI-like deflation starting at noon
yesterday. Seismic tremor levels increased slightly.
Thirty-three earthquakes were strong enough to be located within Kilauea volcano - one within the upper east rift zone and
thirty-two in a northwest-southeast alignment beneath Kalapana, including a magnitude-4.6 quake before midnight last night.
The summit gas plume is moving to the southwest this morning. The most recent (preliminary) sulfur dioxide emission rate
measurement was 800 tonnes/day on March 10, 2011.
HAWAIIAN VOLCANO OBSERVATORY CURRENT STATUS REPORT
Friday, March 11, 2011 4:44 PM HST (Saturday, March 12, 2011 02:44 UTC)
The Kamoamoa fissure eruption on Kilauea Volcano's east rift zone remained paused.
East rift zone SO2 emissions remained similar to yesterday's measured rate of 350 tonnes/day. Summit SO2 emissions today
were around 900 tonnes/day.
Seismic tremor at the summit and east rift zone declined during the past 12 hours. Since this morning, three small earthquakes, the
largest of which was magnitude-3.2, occurred in the Kalapana area.
The summit and east rift zone continued to show very slow deflation.
At Kilauea's summit, the bottom of the Halema'uma'u Crater vent remained covered with rubble.
And that's that. We haven't heard a peep from the old girl since (as of 4/15/11). The lava is still down there churning
around. We eagerly await the next event...
Magnitude 4.6 Earthquake on the South Flank of Kilauea Volcano
March 11, 2011 Volcano No Comments
Media release | Hawaiian Volcano Observatory
HAWAI‘I ISLAND, Hawaii — The U.S. Geological Survey’s Hawaiian Volcano Observatory (HVO) recorded a magnitude-
4.6 earthquake located beneath Kilauea volcano’s south flank on Thursday, March 10, at 10:58 p.m. HST. This earthquake was
centered about 2 km (1 mi) southwest of Kalapana and 44 km (28 mi) south-southeast of Hilo, at a depth of 9.3 km (5.8 mi).
The earthquake was widely felt on the Island of Hawai’i. The USGS “Did you feel it?” Web site (http://earthquake.usgs.
gov/eqcenter/dyfi/) received more than 200 felt reports within two hours of the earthquake.
The earthquake was the largest in a cluster of about 20 earthquakes in the Kalapana area overnight. In addition, there were three
earthquakes of magnitude 3.0 and above.
This earthquake sequence is not related to the magnitude-8.9 earthquake in Japan or the subsequent tsunami.
Most earthquakes in the Kalapana area and along the lower south flank of Kilauea are caused by motion of the volcano’s south
flank moving southeast over the ocean floor as a result of magma injected into the rift zone. Last night’s magnitude-4.6
earthquake, along with its foreshocks and aftershocks, are consistent with slip along the interface between Kilauea and the ocean
floor in response to the intrusion of magma during the Kamoamoa fissure eruption episode earlier in the week.
Waves hit Hawaii, residents remain on edge
March 11, 2011 7:40 AM
The Associated Press
HONOLULU (AP) -- Tsunami waves hit Hawaii in the early morning hours Friday and were sweeping through the island chain after an
earthquake in Japan sparked evacuations throughout the Pacific and as far as the U.S. western coast.
The Pacific Tsunami Warning Center says Kauai was the first island hit early Friday by the tsunami, and the waves surged in Waikiki.
Officials predicted Hawaii would experience waves up to 6 feet, and officials spent hours evacuating ahead of the storms. The waves early
Friday weren't that large.
Residents in coastal areas of Hawaii were evacuated to refuge areas at community centers and schools while tourists in Waikiki were
moved to higher floors of their high-rise hotels.
Roadways and beaches were empty as the tsunamis struck the state, which had hours to prepare.
The tsunami was generated by an 8.9-magnitude earthquake in Japan.
The governor of Hawaii ordered the evacuation of coastal areas and warned residents to take the threat seriously. People waited in long
lines stocking up on gas, bottled water, canned food and generators, and officials told residents to stock up on water and fill their cars with
While the tsunami is likely to go around smaller islands, the size of Hawaii's islands will amplify the waves, which will crash hardest against
harbors and inlets.
"They're going to be coming in with high currents, they can pick up boulders from the sea floor ... they can pick up cars, they can pick up
fuel tanks, those things become battering rams and so it just amplifies the destruction in a big tsunami," said Chip McCreery, director for
the Pacific Tsunami Warning Center.
Waves almost 5 feet high hit Midway, a tiny island in the North Pacific about 1,300 miles northwest of Honolulu.
"We're preparing for the worst and we're praying for the best," said John Cummings III, spokesman for the Honolulu Department of
The Honolulu International Airport remained open but seven or eight jets bound for Hawaii have turned around, including some
originating from Japan, the state Department of Transportation said.
All harbors are closed and vessels were being ordered to leave the harbor.
The warning was issued Friday at 3:31 a.m. EST. Sirens were sounded about 30 minutes later in Honolulu alerting people in coastal areas
to evacuate. About 70 percent of Hawaii's 1.4 million population resides in Honolulu, and as many as 100,000 tourists are in the city on any
Honolulu's Department of Emergency Management has created refuge areas at community centers and schools, and authorities on Kauai
island have opened 11 schools to serve as shelters for those who have left tsunami inundation zones.
Streets cleared out across Hawaii with usually bustling Waikiki mostly free of any foot traffic, with police ordering every one into the
hotels. At the hotels, visitors were evacuated to the third floor and higher.
"The situation we're confronting right now is unpredictable. We do not know how many waves are going to be coming," said Honolulu
Mayor Peter Carlisle. "We do not know which wave, if any wave, causes the most damage and how long the series of waves can last. As a
result of that, it is our responsibility to do those things which are absolutely essential to ensure that human life is saved."
A small 4.5-magnitude earthquake struck the Big Island just before 5 a.m. EST, but there were no reports of damages and the quakes
weren't likely related, a geophysicist with the United States Geological Survey said.
U.S. Coast Guard rescue crews were making preparations throughout the Hawaiian Islands to provide post-tsunami support, with cutter
and aircraft crews positioning themselves to conduct response and survey missions.
Dennis Fujimoto said the mood is calm but concerned on the island of Kauai while people readying for the tsunami.
There's long lines at gas stations, and at the Wal-Mart, one of the few places that was open to midnight, people were stocking up on
Associated Press Writers contributing to this report include Mark Niesse and Audrey McAvoy in Honolulu, Denise Petski in Los Angeles, Kathy
McCarthy in Seattle, Michelle Price and Carson Walker in Phoenix.
14 March 2011
Measuring the thickness of an 'a'ā flow produced by the Kamoamoa fissure eruption
Left. Measuring the thickness of an
'a'ā flow produced by the Kamoamoa
fissure eruption. The measuring stick is
2 m (6.5 ft) tall.
Right. Measuring the flow thickness
from another section of the 'a'ā flow,
using a 1 m (3.2 ft) orange pole for
That's Tim Orr, a geologist with USGS
at Hawaii Volcano Observatory. We've
crossed paths a few times out at the
(we felt this one)
|Other than that, there's nothing much going on around here...
28 March 2011
Lava reappeared in Pu`u `Ō `ō crater, covering the floor with a small lava lake
Lava reappeared in Pu`u `Ō `ō crater on Saturday morning (March 26), covering the floor of the
crater with a small lava lake.