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2006/10/18 SEISMOGRAM
Aloha...
HAWAII REPORT: Talking about USGS Hawaiian Volcano Observatory (HVO) |
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This is a display of the seismogram for a seismometer on Hualalai volcano south of the earthquake epicenters. While much of the signal is off scale, you can see both main shocks as well as the lack of earthquakes before and the immediate increase in earthquakes (aftershocks) after the main events. | large image | |
Over 80 aftershocks with magnitudes greater than 1.7 were recorded in the first 24 hours after the quake. The largest was a magnitude 4.2 that occurred at 10:35 AM HST on October 15. Like the second earthquake, preliminary locations for most of the aftershocks placed them at depths less than 20 km.
These earthquakes were felt statewide but most strongly in the North Kona and Kohala areas (http://pasadena.wr.usgs.gov/shake/hi/). The shaking was strong enough to cause power generators to trip offline in Hawai'i, Maui, and O'ahu counties. Damage was reported mostly on the west side of Hawai'i island but also on Maui and O'ahu. There were no reported fatalities.
The first earthquake was the largest recorded in Hawai'i Island since the M6.7 under the east flank of Mauna Loa on November 16, 1983. The only two larger earthquakes were a M7.2 that occurred beneath Kilauea's South Flank on November 29, 1975 and an estimated M7.9 that occurred beneath the southeast flank of Mauna Loa on April 2, 1868.
The most recent earthquakes were unusual for this area of Hawai'i Island. Prior to October 15, a M4.8 quake on May 14, 1982 was the largest of thirty-one earthquakes with a magnitude greater than 4.0 that have been recorded by our modern seismic network since its inception in 1960.
The quakes did not affect the behavior of any nearby active volcanoes - Hualalai, Mauna Loa, Mauna Kea, and Haleakala. Kilauea volcano continues to erupt from the Pu'u 'O'o vent.
The earthquakes probably reflect the earth's response to loading by the islands. Preliminary analyses show a possible east-west slip plane and a similar orientation to the clustering of aftershocks. Further examination of all available data should shed some light on this most interesting and destructive seismic event.
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USGS Hawaiian Volcano Observatory (HVO)
HAWAII EARTHQUAKE: How We Are Coping...
Aloha!
CURRENTLY In Ocean View, Hawaii
IMAGE: 10:42 P.M. HST 10/15/06
We Have Light By Our Tiki Torches...
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Recent Earthquakes in Hawai`i - Index Map
Hawaiian Volcano Observatory Status Page!
Two powerful earthquakes occurred at 7:07 and 7:14 HST on the northwest side of Hawai`i Island. Damage reports continue to come in to Hawai`i County Civil Defense. Our monitoring networks suffered minimal damage and continue to operate.
Summary: There have been no significant changes in the past 24 hours. Kilauea volcano continues to erupt from the Pu`u `O`o vent on the East Rift Zone. Summit inflation centered in the south part of the caldera continues.
Lava is flowing through the PKK lava tube from its source on the southwest flank of Pu`u `O`o to the ocean. About 1 kilometer south of Pu`u `O`o, the Campout flow branches off from the PKK tube. The PKK and Campout systems feed two widely separated ocean entries named East Lae`apuki and East Ka`ili`ili, respectively. Both entries are located inside Hawai`i Volcanoes National Park.
NPS eruption crew Friday evening report: Onshore winds obscured views of East Lae`apuki ocean entry, but brilliant glow could still be seen. A surface flow was visible between Holei pali and Paliuli. Later in the evening, glow was seen above Pulama pali.
Last 24 hours at Pu`u `O`o: The weather was clear during the day but foggy at night. A change in wind direction put the plume directly into the camera after noon. Incandescence was visible from East Pond and January vents when the weather allowed. Dim glow was seen from South Wall complex. No incandescence was seen from any other vent in the crater. The webcam and other instruments are continuing to send data indicating no major changes at Pu`u `O`o due to these large earthquakes.
The POC tiltmeter and the seismic tremor level measured on Pu`u `O`o showed four broad oscillations. The pattern noticed over the last few days still holds - the tilt increases when the seismic tremor level drops. When the tilt gets high enough, the tremor level rapidly increases and the tilt starts to decrease. Several hours later, the seismic tremor level would decrease and would start the cycle over again.
Seismic tremor levels, as recorded by our STC seismometer about 2 km uprift of the vent, are at moderate levels.
Last 24 hours at Kilauea summit: The tiltmeter network shows no to slight inflation except at UWE, where a 0.9 microradian inflation was recorded starting at 22:26 this morning. The appearance of this signal again on only one tiltmeter in the network shows the value of a network - we can be more confident that the UWE signal is probably not significant. Few small shallow earthquakes were distributed along faults within the South Flank.
Seismic tremor levels remain low.
Air quality has been poor.
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Hawaiian Volcano Observatory Status Page
3:15 P.M. HST 10/15/06 UpDate!
Aloha!
CURRENTLY In Ocean View, Hawaii
IMAGE: 3:15 P.M. HST 10/15/06
The Pride of Aloha Sailing By Jus'NOW...
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Recent Earthquakes in Hawai`i - Index Map
ALL CLEAR In Ocean View, Hawaii!!!
IMAGE: Lehua Blossoms On an Ohia Tree!
Aloha!
A BEAUTIFUL Clear Day!!!
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Recent Earthquakes in Hawai`i - Index Map
BIG EARTHQUAKE!!! Recent Earthquakes in Hawai`i - Index Map
But, Thankfully NO PROBLEM Here, In Ocean View!!!
A Few Items Fell Off Our Bookcases & Broke...
This "Shake" Lasted For Quite a Few Seconds! ...Some Damage To The Area Where The Epicenter Is Located On The Map Above!
...Aloha!
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Recent Earthquakes in Hawai`i - Index Map
We Just Had a STRONG JOLT Here! Talking about Recent Earthquakes in Hawai`i - Index Map
We Jus'Had a STRONG JOLT Here! ...& You Could Hear The Shockwave Moving Down The Mountain!!!
Pretty Wild!!!
Recent Earthquakes in Hawai`i
== PRELIMINARY EARTHQUAKE REPORT == Version #0: This report supersedes any earlier reports of this event.
U.S. Geological Survey, Hawaiian Volcano Observatory
This is a computer-generated message. This event has not yet been reviewed by a seismologist.
A minor earthquake occurred at 8:16:40 AM (HST) on Monday, April 10, 2006 .
The magnitude 3.1 event occurred 19 km (12 miles) NW of Na`alehu.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 3.1 - duration magnitude (Md) |
|---|---|
| Time | Monday, April 10, 2006 at 8:16:40 AM (HST) Monday, April 10, 2006 at 18:16:40 (UTC) |
| Distance from | Na`alehu - 19 km (12 miles) NW (320 degrees) Miloli`i - 22 km (14 miles) E (88 degrees) Pahala - 23 km (14 miles) W (266 degrees) Kailua - 59 km (36 miles) SSE (148 degrees) |
| Coordinates | 19 deg. 11.5 min. N (19.192N), 155 deg. 42.0 min. W (155.701W) |
| Depth | 7.8 km (4.8 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=039, Nph=039, Dmin=8 km, Rmss=0.18 sec, Erho=0.5 km, Erzz=1.1 km, Gp=108 degrees |
| Event ID# | hv00017437 |
| Additional Information | map || waveforms |
For more information, see http://hvo.wr.usgs.gov/
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Recent Earthquakes in Hawai`i - Index Map
We Jus'Had a Pretty Good Shaker, Here! Talking about Recent Earthquakes in Hawai`i - Index Map
Recent Earthquakes in Hawai`i
== PRELIMINARY EARTHQUAKE REPORT ==U.S. Geological Survey, Hawaiian Volcano Observatory
Version #1: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.
This earthquake was felt.
A light earthquake occurred at 4:04:52 PM (HST) on Wednesday, January 18, 2006 .
The magnitude 4.7 event occurred 15 km (10 miles) ESE of Na`alehu.
The hypocentral depth is 40 km (25 miles).
| Magnitude | 4.7 - duration magnitude (Md) |
|---|---|
| Time | Wednesday, January 18, 2006 at 4:04:52 PM (HST) Thursday, January 19, 2006 at 2:04:52 (UTC) |
| Distance from | Na`alehu - 15 km (10 miles) ESE (115 degrees) Pahala - 22 km (14 miles) S (173 degrees) Lo`ihi Seamount - 24 km (15 miles) WNW (295 degrees) Hilo - 89 km (55 miles) SSW (205 degrees) |
| Coordinates | 19 deg. 0.3 min. N (19.005N), 155 deg. 27.3 min. W (155.454W) |
| Depth | 41.7 km (25.9 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=050, Nph=050, Dmin=17 km, Rmss=0.1 sec, Erho=1.3 km, Erzz=2 km, Gp=216 degrees |
| Event ID# | hv00014963 |
| Additional Information | map || waveforms |
For more information, see http://hvo.wr.usgs.gov/
[ Report a Felt Earthquake ]
[ Hawai`i Island map || Maui County map || O`ahu map || Kaua`i County map ]
[ all earthquake list || big earthquake list || glossary of terms || HVO home page ]
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Recent Earthquakes in Hawai`i - Index Map
Jus'Now!!! Another *BIG* EARTHQUAKE!!!
...SomeThing Is Happening HERE!!!
Recent Earthquakes in Hawai`i
== PRELIMINARY EARTHQUAKE REPORT == Version #4: This report supersedes any earlier reports of this event.
U.S. Geological Survey, Hawaiian Volcano Observatory
This event has been reviewed by a seismologist.
This earthquake was felt throughout the island of Hawai`i. Also felt in parts of Maui, Moloka`i and O`ahu.
A light earthquake occurred at 10:08:35 PM (HST) on Monday, July 25, 2005 .
The magnitude 4.5 event occurred 9 km (6 miles) SW of Kilauea Summit.
The hypocentral depth is 30 km (19 miles).
For more information, see http://hvo.wr.usgs.gov/
Talking about Honolulu Star-Bulletin: Offshore quake rattles Big Island!
Offshore quake
rattles Big Island
The moderate jolt from
Loihi volcano is also felt
around Oahu
rbernardo@starbulletin.com
Puna resident Petra Wiesenbauer was sitting in front of her computer yesterday morning when she heard rumbling sounds.
A 5.2-magnitude earthquake shook her windows and rattled the floorboards for about five seconds. Quakes might be a common occurrence in Puna, but the natural phenomena still startle her.
"It's kind of eerie," said Wiesenbauer, who owns and operates Hale Makamae Bed and Breakfast in Puna.
This is the second 5.2-magnitude undersea earthquake to occur off the Big Island in the last few days. The quake occurred at 9:15 a.m. yesterday and was centered about 15 miles west-southwest of Loihi, or about 20 miles south-southeast of Naalehu, at a depth of 18 miles, according to Jim Kauahikaua, scientist-in-charge at the U.S. Geological Survey's Hawaiian Volcano Observatory.
Three days ago a moderate 5.2-magnitude earthquake occurred about five miles below sea level and was centered about 30 miles north-northeast of Ookala. No damage was reported.
Yesterday's quake was also considered moderate, Kauahikaua said. There were no reports of damage.
Kauahikaua said the quake occurred under Loihi, the youngest volcano in the Hawaiian chain, located south of Kilauea. Many residents in most of the Big Island as well as parts of Oahu and Maui felt the quake.
Lanny Nakano, acting administrator for the Hawaii County Civil Defense, said he received about a dozen phone calls from residents in Waimea and Puna. "They did feel a large jolt. Some said it was a rolling effect," Nakano said.
On Oahu, police and fire received some calls. Several residents in Kailua, Salt Lake and Waialae Nui also reported that they felt the quake.
Pat Weaver, caretaker of an 8,500-square-foot home at Aha Maka Way along Waialae Nui Ridge, said, "It felt like someone was rocking the house."
Dispatchers at the Maui Police Department received many calls from residents of the quake.
Kauahikaua said the two earthquakes are the largest recorded quakes to occur in the Loihi area since a 4.9-magnitude quake occurred on Sept. 13, 2001, and the scores of quakes during a seismic swarm accompanying a possible Loihi eruption that occurred in July 1996.
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Read More...
5.2 shaker second one in 48 hours
by Betsy Tranquilli
West Hawaii Today
btranquilli@westhawaiitoday.com
Monday, July 18, 2005 11:50 AM HSTThere's a whole lot of shaking going on over the past few days on the Big Island...
- Eartrhquakes rattle Hawai'i twice - The Honolulu Advertiser
- Quakes rattle the Big Island
There's a whole lot of shaking going on over the past few days on the Big Island.
Monday, July 18, 2005 11:23 AM HST
I Believe Mauna Loa Will Erupt This Summer!
...Aloha! It's Jus'a "Gut" Feeling!
The Magnitude of Monday's Earthquake, Felt by My Wife & "Blogged" Previously Here, Has Been Raised From 2.8 To 3.2!!!
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Hawaiian Volcano Observatory
Version #4: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.
This earthquake was felt at Na`alehu.A minor earthquake occurred at 5:14:05 AM (HST) on Monday, May 16, 2005 .
The magnitude 3.2 event occurred 14 km (9 miles) NW of Na`alehu.
The hypocentral depth is 16 km (10 miles).
Magnitude 3.2 - duration magnitude (Md) Time Monday, May 16, 2005 at 5:14:05 AM (HST)
Monday, May 16, 2005 at 15:14:05 (UTC) Distance from Na`alehu - 14 km (9 miles) NW (310 degrees)
Pahala - 23 km (14 miles) WSW (252 degrees)
Miloli`i - 24 km (15 miles) ESE (102 degrees)
Kailua - 64 km (40 miles) SSE (150 degrees)
Coordinates 19 deg. 8.6 min. N (19.143N), 155 deg. 41.2 min. W (155.687W) Depth 15.6 km (9.7 miles) Quality Good Location Quality Parameters Nst=044, Nph=044, Dmin=8.4 km, Rmss=0.15 sec, Erho=0.3 km, Erzz=0.7 km, Gp=104.4 degrees Event ID# hv05432378 Additional Information map || waveforms
...& Look At This Map, (Especially, The Swarm of 3 Earthquakes Around Pahala!)...
Recent Earthquakes in Hawai`i
More...
...HUUUUUUUUUUMMMMMMMMMMMMM???
We Had Another "Felt" Earthquake This Morning!
It Woke My Wife Up! ...I Slept Thru It!...
This One Was "Felt" Because It Was So Close To Our House & ONLY a Mile DEEP!
I'm Starting To Think About Our Evacuation Plans! <=Hava L00K & Tell Me What U Think!;-) ...& What To Take w/Us... Cat, Cat Carrier, Cat Food, Water For The Cat... 
...Thankfully, MSN Spaces Is "Web Based"! 
Recent Earthquakes in Hawai`i 
Recent Earthquakes in Hawai`i == PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Hawaiian Volcano Observatory
Version #3: This report supersedes any earlier reports of this event.
This is a computer-generated message. This event has not yet been reviewed by a seismologist.
A micro earthquake occurred at 5:14:05 AM (HST) on Monday, May 16, 2005 .
The magnitude 2.8 event occurred 13 km (8 miles) NW of Na`alehu.
The hypocentral depth is 2 km ( 1 mile).
Magnitude 2.8 - duration magnitude (Md) Time Monday, May 16, 2005 at 5:14:05 AM (HST)
Monday, May 16, 2005 at 15:14:05 (UTC) Distance from Na`alehu - 13 km (8 miles) NW (316 degrees)
Pahala - 21 km (13 miles) WSW (253 degrees)
Miloli`i - 25 km (16 miles) E (99 degrees)
Kailua - 64 km (40 miles) SSE (148 degrees)
Coordinates 19 deg. 9.0 min. N (19.151N), 155 deg. 40.5 min. W (155.675W) Depth 1.9 km (1.2 miles) Quality Poor Location Quality Parameters Nst=030, Nph=030, Dmin=18.7 km, Rmss=0.41 sec, Erho=1.4 km, Erzz=1.2 km, Gp=165.6 degrees Event ID# hv05432378 Additional Information map || waveforms
For more information, see http://hvo.wr.usgs.gov/
More...
Mauna Loa Rumbles... ( I Guess I Need To Start Getting My "Space" Ready, (Adding Links To The Available Cams & Info), For The REALLY *BIG* Show, Coming SOON!!!)...
UpDate To The UpDate: The Aloha Friday The 13th Hawaiian Earthquake!
...*WOW*!!! This Is Getting REALLY Interesting!!!
Based On What I Felt, I Knew It Had To Be Closer & STRONGER Than 1st Reported!!!
We Now Have Another UpDate That, Now Puts The Magnitude of The Aloha Friday The 13th Hawaiian Earthquake At 5.1!!!
Magnitude 5.1 - HAWAII REGION, HAWAII
2005 May 13 10:06:42 UTC
Preliminary Earthquake Report
U.S. Geological Survey, Hawaiian Volcano Observatory
Hawaii National Park, Hawaii
Magnitude 5.1 Date-Time Friday, May 13, 2005 at 10:06:42 (UTC)
= Coordinated Universal Time
Friday, May 13, 2005 at 12:06:42 AM
= local time at epicenter
Location 18.897°N, 155.212°W Depth 40.2 km (25.0 miles) Region HAWAII REGION, HAWAII Distances 44 km (27 miles) ESE (115°) from Naalehu, HI
44 km (28 miles) SE (141°) from Pahala, HI
62 km (38 miles) S (178°) from Volcano, HI
79 km (49 miles) SSW (204°) from Hawaiian Beaches, HI
91 km (56 miles) S (188°) from Hilo, HI
383 km (238 miles) SE (134°) from Honolulu, HI
Location Uncertainty horizontal +/- 1 km (0.6 miles); depth +/- 1.6 km (1.0 miles) Parameters Nph=061, Dmin=39.3 km, Rmss=0.11 sec, Gp=256°,
M-type=duration magnitude (Md), Version=3 Source U.S. Geological Survey, Hawaiian Volcano Observatory
Hawaii National Park, Hawaii
Event ID hv05432007
Location Maps: Topo map centered at earthquake
2-degree | 10-degree
NEIC Maps
(This link takes you offsite. Not all regions have topo maps available.)
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Info for event hv05432007
UpDate: The Aloha Friday The 13th Hawaiian Earthquake!
...Aloha! The Information on Last Nights, Hawaiian "Shaker", Has Changed Rather Markedly!
This Is The Map That, I Had Posted Last Night But, Our Aloha Friday The 13th Hawaiian "Shaker", Wasn't On This Map Last Night!
Comparing With The Infomation That, I Posted Last Night, Found In The Next Blog Entry Here, On My Space, The Distance From Ocean View Is:
Updated: 62 km (39 miles) ESE (114°) from Hawaiian Ocean View, HI
Last Night: 103 km (64 miles) S (178°) from Hawaiian Ocean View, HI
...That Is a Significant 25 Mile Difference!!!
Recent Earthquakes in Hawai`i == PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Hawaiian Volcano Observatory
Version #3: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.
This earthquake was felt throughout the island of Hawai`i.
A moderate earthquake occurred at 0:06:42 AM (HST) on Friday, May 13, 2005 .
The magnitude 5.1 event occurred 5 km (3 miles) ESE of Lo`ihi Seamount.
The hypocentral depth is 40 km (25 miles).
Magnitude 5.1 - duration magnitude (Md) Time Friday, May 13, 2005 at 0:06:42 AM (HST)
Friday, May 13, 2005 at 10:06:42 (UTC) Distance from Lo`ihi Seamount - 5 km (3 miles) ESE (119 degrees)
Na`alehu - 43 km (27 miles) ESE (115 degrees)
Ka`ena Point - 43 km (27 miles) S (191 degrees)
Hilo - 93 km (58 miles) S (188 degrees)
Coordinates 18 deg. 53.8 min. N (18.897N), 155 deg. 12.7 min. W (155.212W) Depth 40.2 km (25.0 miles) Quality Fair Location Quality Parameters Nst=061, Nph=061, Dmin=39.3 km, Rmss=0.11 sec, Erho=1 km, Erzz=1.6 km, Gp=255.6 degrees Event ID# hv05432007 Additional Information map || waveforms
For more information, see http://hvo.wr.usgs.gov/
More...
Earthquakes in Hawai`i
Many other earthquakes, including the largest ones, occur in areas of structural weakness at the base of Hawai`i's volcanoes or deep within the Earth's crust beneath the island. These are referred to as tectonic earthquakes. In the past 150 years, several strong tectonic earthquakes (magnitude 6 to 8) caused extensive damage to roads, buildings, and homes, triggered local tsunami, and resulted in loss of life. The most destructive earthquake in Hawai`i's history occurred on April 2, 1868, when 81 people lost their lives. With a magnitude of 7.9 and a maximum intensity of XII, this destructive earthquake destroyed more than a hundred homes and generated a 15-m high tsunami along Kilauea's south coast.
Source: Earthquakes in Hawai`i
Talking about Recent Earthquakes in Hawai`i
...Aloha! We Jus'Had a Big Earthquake Here!!!
No Wonder It Wasn't On That, Map! ...I Had The Wrong Map Posted!
Here's The Right Map...
...& Information:
Magnitude 4.6 - HAWAII REGION, HAWAII
2005 May 13 10:06:31 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
Magnitude 4.6 Date-Time Friday, May 13, 2005 at 10:06:31 (UTC)
= Coordinated Universal Time
Friday, May 13, 2005 at 12:06:31 AM
= local time at epicenter
Location 18.183°N, 155.726°W Depth 5 km (3.1 miles) set by location program Region HAWAII REGION, HAWAII Distances 99 km (62 miles) S (188°) from Naalehu, HI
103 km (64 miles) S (178°) from Hawaiian Ocean View, HI
116 km (72 miles) SSW (193°) from Pahala, HI
174 km (108 miles) S (170°) from Kalaoa, HI
182 km (113 miles) SSW (202°) from Hilo, HI
411 km (256 miles) SSE (147°) from Honolulu, HI
Location Uncertainty horizontal +/- 14.5 km (9.0 miles); depth fixed by location program Parameters Nst= 57, Nph= 57, Dmin=102 km, Rmss=0.78 sec, Gp=256°,
M-type=body magnitude (Mb), Version=8 Source U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
Event ID usyaaw
Location Maps: Topo map centered at earthquake
2-degree | 10-degree
(This link takes you offsite. Not all regions have topo maps available.)
It Woke Us Up! ...You Could Feel, Seemingly, The Whole Island Move!!!
It's Not On The Map, Yet! ...As It Occured At Approximately, 12:07 A.M., Friday The 13th of May, 2005!
But, This One WILL Make The News!!!
Based On The Other Earthquakes That, I Have Felt Here, I Estimate It To Be In The 4.5 To 5.0 Range!
Here's How I Described It On Earthquake Felt Report Form...
"There Was a Small One, Like Heavy Wind Impacting The Side of Our House Then, a Few Seconds Passed, & Definitely a Big Shake, Rumble Like Rolling Downhill!"
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