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Topic 77 of 92: Living with Volcanoes

Sun, May 26, 2002 (16:37) | Marcia (MarciaH)
32 new of 106 responses total.

 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 74 of 106: Paul Terry Walhus (terry) * Sat, Oct  2, 2004 (21:10) * 1 lines 
 
Mt. St. Helens just went to a Level 3 Alert. That means potential danger to life and property.


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 75 of 106: Marcia  (MarciaH) * Sat, Oct  2, 2004 (22:22) * 71 lines 
 
I posted by mistake all the info on MSH so I will post it here also:

Mount St. Helens Update |
| September 29, 2004 5:30 P.M., PDT |
| |
| |
| Increased seismicity overnight prompted raising the alert level to |
| Volcano Advisory (Alert Level 2) at 10:40 A.M., PDT, this morning. |
| Throughout the day the seismic energy level has remained at an |
| elevated with a rate of 3-4 events per minute including an increase in |
| the number of events between Magnitude 2 and 3. All earthquake |
| locations are still shallow and in or below the lava dome. In |
| addition, initial data from the GPS instrument on the lava dome that |
| was repaired Monday morning suggest that the site moved a few inches |
| northward Monday and Tuesday, but has since been stable. Such movement |
| is not surprising in light of the high seismicity levels. A USGS field |
| crew continued their deployment of GPS equipment today in order to |
| monitor any ground movement on the lava dome, crater floor, or lower |
| slopes of the volcano. Another gas flight this morning produced a |
| result of no significant volcanic gas detected, as was the case on |
| Monday. Two press conferences were held at CVO to update the media. |
| Tomorrow's field work includes continued GPS deployments. |
| |
| |
| The current hazard outlook is unchanged from that outlined in this |
| morning's Volcano Advisory. Updated wind forecasts from the National |
| Oceanographic and Atmospheric Administration coupled with an eruption |
| model indicate that the wind direction will shift from northwesterly |
| to northeasterly tonight. Therefore any ash clouds produced tonight |
| will drift southwestward. |
| |
| |
| Confusion at this morning's press briefing at CVO regarding Alert |
| Levels resulted in numerous calls to emergency management agencies |
| from the public about which is the correct level. We are at Alert |
| Level Two?Volcano Advisory. Explanation of the alert-level scheme can |
| be found on the "News and Current Events" web site below. |
| |
| |
| For past updates and notices see past updates at: |
| http://vulcan.wr.usgs.gov/Volcanoes/Cascades/CurrentActivity/framework |
| .html |
| |
| |
| A few photographs of recent fieldwork and of the volcano can be |
| obtained from: |
| http://vulcan.wr.usgs.gov/News/framework.html |
| |
| |
| Daily updates of earthquake data and other information can be found on |
| the WORLD WIDE WEB at URL: |
| |
| |
| http://vulcan.wr.usgs.gov/Volcanoes/MSH/CurrentActivity |
| (CVO Menu - Monthly Summaries and Updates) |
| |
| |
| and |
| |
| |
| http://www.pnsn.org/HELENS/welcome.html |
| (University of Washington - Earthquake Update) |
| |
| |
| Our "News and Current Events" webpage now contains "Quick Links" to |
| the current update, current photos, and the University of Washington |
| Mount St. Helens seismic page, plus other useful "Background" webpages |
| on Mount St. Helens, including an explanation of the Cascade Range |
| alert-level scheme. |
| http://vulcan.wr.usgs.gov/News/ |
|


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 76 of 106: Marcia  (MarciaH) * Sat, Oct  2, 2004 (22:23) * 1 lines 
 
as Terry pointed out, MSH is currently erupting and the volcanologists who know this volcano are predicting a major eruption within the next 24 hours.


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 77 of 106: Marcia  (MarciaH) * Sat, Oct  2, 2004 (22:25) * 43 lines 
 
Mount St. Helens Update |
| October 1, 2004 8:00 A.M., PDT
|
| |
| |
| The alert remains at a Volcano Advisory. The seismic energy level |
| remains elevated with a rate of 3-4 events per minute and earthquakes |
| as large as magnitude 3.3. All earthquake locations are still shallow |
| and in or below the lava dome. Data from a single GPS instrument on |
| the east side of the lava dome suggest that total movement is ont the |
| order of 7 cm less than 3 inches) since Monday. Such movement is not |
| surprising in light of the high seismicity levels. A USGS field crew |
| collected additional data from GPS equipment deployed to monitor any |
| ground movement on the lava dome, crater floor, or lower slopes of the |
| volcano. A gas flight Thursday again failed to detect any significant |
| volcanic gas, as was the case on Monday and Wednesday. Today, field |
| crews will use a thermal- imaging device (FLIR) to look for any |
| thermal anomalies on the dome, and will install additional |
| seismometers on the flanks of the volcano to enhance our ability to |
| detect earthquakes. We are examining images of cracks on the crater |
| glacier to determine how they are related to the current activity. A |
| press conference will be held Friday at CVO at 9:30 am to update the |
| media. |
| |
| |
| The current hazard outlook is unchanged from that outlined in |
| Wednesday's Volcano Advisory. |
| |
| |
| Confusion regarding Alert Levels resulted in numerous calls to |
| emergency management agencies from the public about which is the |
| correct level. We are at Alert Level Two?Volcano Advisory. Explanation |
| of the alert- level scheme can be found on the "News and Current |
| Events" webpage below. |
| |
| |
| Our "News and Current Events" webpage now contains "Quick Links" to |
| the current update, current photos, and the University of Washington |
| Mount St. Helens seismicity information, plus other useful |
| "Background" webpages on Mount St. Helens, including an explanation of |
| the Cascade Range alert-level scheme. |
| |
|



 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 78 of 106: Marcia  (MarciaH) * Sat, Oct  2, 2004 (22:26) * 8 lines 
 
The first explosion plume appeard in the web cam at 12:04:01 Pacific Time.
Here is a subsequent shot.
The web cam can be seen here:


http://www.fs.fed.us/gpnf/volcanocams/msh/




 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 79 of 106: Lucie  (alyeska) * Sun, Oct  3, 2004 (22:22) * 3 lines 
 
I'm glad to see you posting. I have checked from my sister in laws pc but found nothing.

We rode out the hurricanes at her house until the power was restored hered.


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 80 of 106: Lucie  (alyeska) * Sun, Oct  3, 2004 (22:24) * 1 lines 
 
They made everyone leave the observatory.


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 81 of 106: Paul Terry Walhus (terry) * Mon, Oct  4, 2004 (12:51) * 1 lines 
 
It's venting right now, Mt. St. Helens. Nothing spectacular yet, just a smoke plume. I'm watching it live on msnbc.


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 82 of 106: Paul Terry Walhus (terry) * Mon, Oct  4, 2004 (12:57) * 10 lines 
 
MOUNT ST. HELENS NATIONAL MONUMENT, Wash. (AP)--Mount St. Helens belched more steam Monday following several days of tremors and low-level earthquakes that have raised fears that the mountain might blow at any moment.

It was not immediately clear how large Monday's emission was, or whether it contained ash, but U.S. Geological Survey geologist Willie Scott said any ash would fall mostly in the crater and not threaten any structures.

The steam burst blanketed the top of the mountain in a white cloud and followed a similar blast and 20-minute tremor late Sunday.

A drumbeat of earthquakes since a plume of steam was released on Friday indicated that pressure was mounting within the mountain. Geological Survey crews also observed a shift in the crater floor and on part of the 1,000-foot lava dome that essentially serves as a plug for magma, he said.


from the AP release


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 83 of 106: Marcia  (MarciaH) * Mon, Oct  4, 2004 (15:48) * 72 lines 
 
Daily update:

U.S. Geological Survey, Vancouver, Washington |
| University of Washington, Pacific Northwest Seismograph Network, |
| Seattle, Washington |
| |
| |
| Mount St. Helens Update 4 October 2004 7:00 A.M. |
| |
| |
| Current status is Volcano Alert (Alert Level 3); aviation color code |
| RED |
| |
| |
| Overnight seismic activity increased until a steam (and possibly ash) |
| event occurred about 10:40 P.M. Observers at Coldwater Ridge could see |
| the steam plume, which barely made it to the crater rim, in the |
| moonlight. Since then, the seismicity has been significantly lower as |
| after prior steam-and-ash events. Earthquakes are occurring at a rate |
| of about 1 per minute and the largest since the steam event have been |
| in the magnitude 2s. All locations remain shallow. |
| |
| |
| Results from GPS measurements indicate no significant deformation of |
| the outer flanks of the volcano. However, visual observations and |
| photographic analysis show large-scale uplift (10's of meters) of part |
| of the glacier and a nearby segment of the lava dome. Yesterday a |
| field crew installed a new GPS instrument on the dome and also |
| measured the distance from the Johnston Ridge Observatory to the dome. |
| |
| |
| Yesterday's gas flight did not detect significant concentrations of |
| carbon dioxide. |
| |
| |
| Two telemetered microphones are now in operation to detect explosions. |
| |
| |
| Today we will receive a remotely operated video camera that will be |
| installed on the crater rim from the USGS Hawaiian Volcano |
| Observatory. Today field crews will work at installing additional |
| seismometers on the flanks of the volcano and will continue to harden |
| the GPS sites and download data. Time permitting, additional flights |
| to acquire thermal imagery and gas measurements will occur. |
| |
| |
| Wind forecasts from the NOAA, combined with eruption models show winds |
| today will be from the east and southeast and any ash clouds would |
| drift to the west and northwest. |
| |
| |
| We continue to be concerned that additional steam-and-ash eruptions |
| could occur at any time. The principal hazard from these types of |
| events is for ash reaching altitudes that could affect aviation. If |
| the current unrest continues there is also an increased probability of |
| larger magnitude and more ash-rich eruptions. |
| |
| |
| We continue to monitor the situation closely and will issue additional |
| updates and Alert Level changes as warranted. |
| |
| |
| Press conferences will continue to be held at the Headquarters office |
| of the Gifford Pinchot National Forest. Press conferences are held at |
| 9:30 A.M. and 2:30 P.M. |
| |
|--------------------------------------------------------------------------|







 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 84 of 106: Marcia  (MarciaH) * Mon, Oct  4, 2004 (20:55) * 66 lines 
 
Mount St. Helens lets off steam

Scientists concerned about 'what's following behind it'
Monday, October 4, 2004 Posted: 7:43 PM EDT (2343 GMT)


October 3: Large cracks appear in the glacier around the lava dome.
Image:




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VIDEO
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VANCOUVER, Washington (CNN) -- Mount St. Helens released huge, billowing clouds Monday in what geologists called a small eruption of steam and ash that indicated rising temperatures within the volcano.

"It was a burst of steam and ash that came out fairly continuously for about 40 minutes" starting about 9:42 a.m. (12:42 p.m. ET), said Tom Pierson of the U.S. Geological Survey.

The plumes, larger and darker than those of Friday's steam eruption, rose to about 10,000 feet above sea level, about 1,600 feet above the peak, according to geologists and pilots in the area.



more... http://www.cnn.com/2004/TECH/science/10/04/mt.st.helens/index.html


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 85 of 106: Marcia  (MarciaH) * Mon, Oct  4, 2004 (21:12) * 1 lines 
 
Terry are you watching MSH live on MSNBC on your TV or on the internet? I think there are links here to watch live.


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 86 of 106: Marcia  (MarciaH) * Tue, Oct  5, 2004 (17:57) * 45 lines 
 
************************
Mount St. Helens update
************************
From: Curtis R Manley

New steam release & images of Mount St. Helens activity

New Steam Release

Another steam release began at 9:40 am PDT today, October 4, 2003,
generating a steam and ash/dust plume that rose above the summit (to about
10,000 to 11,000 feet altitude) and was carried slowly to the NE by very
gentle winds. Steam releases continued at a lower rate after the initial
release, but after 15-20 muntes the activity ceased. More dust/ash was
released than on October 1, and an ashfall advisory is in effect until 1 pm
PDT for the southern Washington Cascades. Seismicity continued without
interruption through the steam release.

A gentle small steam release also occurred at 10:40 pm PDT October 3, but
it was smaller than the October 1 event. As on Friday, the seismicity
decreased and then resumed afterward.

Visual and GPS observations on October 3 indicates that at least part of
the dome and the glacier adjacent to the dome have been uplifted between 50
and 100 feet.

Current Update at:
http://vulcan.wr.usgs.gov/Volcanoes/Cascades/CurrentActivity/current_updates.html



Online Images

Photographs of the current activity at Mount St. Helens are being posted
online at irregular intervals. These were taken by USGS personnel on the
ground and during helicopter and airplane reconnaissance and sampling
flights. The images clearly show uplift of the dome glacier before the
October 1 steam release. More current images were temporarily available and
may be re-posted.

The images are high quality (1 to 3 megabytes) and so will take
considerable time to download over low-bandwidth connections.

Note that this is an FTP site:
ftp://ftpext.usgs.gov/pub/wr/wa/vancouver/MSH_Images/


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 87 of 106: Marcia  (MarciaH) * Tue, Oct  5, 2004 (18:00) * 1 lines 
 
I definitely need a new email stripper. I had a great one and it disappeared with the hard drive break. Please bear with me...


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 88 of 106: Cheryl  (CherylB) * Wed, Oct  6, 2004 (09:02) * 1 lines 
 
No problem Marcia, it's great to have you posting again.


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 89 of 106: Curious Wolfie  (wolf) * Wed, Oct  6, 2004 (15:38) * 3 lines 
 
ditto!!!

saw in the local paper that she blew again and threw out rocks and stuff (didn't read the entire article though)...


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 90 of 106: Marcia  (MarciaH) * Wed, Oct  6, 2004 (21:21) * 38 lines 
 
more fun : (I found my great email stripper program and leave the citation in the body for anyone else to download. It is freeware)

*************************** Erta Ale volcano fieldtrip
*************************** From: Gaudru

ERTA ALE 2005 SVE Volcano FIELDTRIP

Dates : we propose a special expedition from 15th to 27th of January 2005

Here is new opportunity to visit the Danakil depression (Djibouti) and the Erta Ale active lava lake in Ethiopia.

The goal of this expedition is to enable a small group of people to travel several days in the Northern Afar ( rift, Asal lake, Ardoukoba...) and spend two days near the Erta Ale active lava lake for measurements, photography, eruption observation... and of course enjoyment of nature in a unique, unspoiled setting. The best-suited participants would be those with a professional interest in geology/Volcanoloy or avid "volcano chasers"/photographers who are in excellent physical condition, enjoy "adventure travel, because this fieldtrip involves significant exertion and discomfort. The roads in the Danakil depression and North Ethiopia are extremely dusty and the weather at the summit of the Erta Ale is very uncomfortable (winds, sunny and very hot temperature). The ascent of Erta Ale volcano is long but not very steep. On Erta Ale the camp will be established near the active crater (lava lake).

Organization of the fieldtrip : SVE (scientific aspects) in connection with Explor'Action Swiss agency (Geneva) for logistical supports

Accompanied by : Henry Gaudru (European Volcanological Society) and local guide.

For further "volcanic informations" please contact by Email: henry.gaudru@laposte.net

For any further details about tour , conditions, price, inscription.... please contact directly by fax or phone :

Explor'Action
11 rue du Mont Blanc
1201 Geneva - Switzerland tel : 00.41.22.731.70.26 Fax : 00.41.22.731.45.74


******************************** NZAPLUME III expedition updates
******************************** From: Jeff Lyall

THE NZAPLUME III EXPEDITION: Online Nautical Journal

Reports from a freelance journalist who is presently on a GNS-led voyage in the Kermadec Arc are helping to put a human face on our offshore research.

Mike Bodnar has joined 25 scientists on Tangaroa for the next two weeks as they investigate submarine volcanoes northeast of Bay of Plenty. Mike's colourful and informative daily reports can be seen here:

http://data.gns.cri.nz/hazardwatch/kermadec.html

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 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 91 of 106: Marcia  (MarciaH) * Wed, Oct  6, 2004 (21:24) * 29 lines 
 
October 4, 2004:

************************ Mount St. Helens update
************************ From: Curtis R Manley

New steam release & images of Mount St. Helens activity

New Steam Release

Another steam release began at 9:40 am PDT today, October 4, 2003, generating a steam and ash/dust plume that rose above the summit (to about
10,000 to 11,000 feet altitude) and was carried slowly to the NE by very gentle winds. Steam releases continued at a lower rate after the initial release, but after 15-20 muntes the activity ceased. More dust/ash was released than on October 1, and an ashfall advisory is in effect until 1 pm PDT for the southern Washington Cascades. Seismicity continued without interruption through the steam release.

A gentle small steam release also occurred at 10:40 pm PDT October 3, but it was smaller than the October 1 event. As on Friday, the seismicity decreased and then resumed afterward.

Visual and GPS observations on October 3 indicates that at least part of the dome and the glacier adjacent to the dome have been uplifted between 50 and 100 feet.

Current Update at: http://vulcan.wr.usgs.gov/Volcanoes/Cascades/CurrentActivity/current_updates.html



Online Images

Photographs of the current activity at Mount St. Helens are being posted online at irregular intervals. These were taken by USGS personnel on the ground and during helicopter and airplane reconnaissance and sampling flights. The images clearly show uplift of the dome glacier before the October 1 steam release. More current images were temporarily available and may be re-posted.

The images are high quality (1 to 3 megabytes) and so will take considerable time to download over low-bandwidth connections.

Note that this is an FTP site: ftp://ftpext.usgs.gov/pub/wr/wa/vancouver/MSH_Images/

This email was cleaned by emailStripper, available for free from http://www.printcharger.com/emailStripper.htm


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 92 of 106: Marcia  (MarciaH) * Wed, Oct  6, 2004 (21:26) * 1 lines 
 
Julie, our Cascade volcanoes enthusiast hopes this MSH eruption stays low level until spring break when she can hike in to see it. I do, too. It would be nice to have a reporter for Geo in the field again!


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 93 of 106: Marcia  (MarciaH) * Wed, Oct  6, 2004 (21:35) * 6 lines 
 
U.S. Geological Survey, Vancouver, Washington | | University of Washington, Pacific Northwest Seismograph Network, | | Seattle, Washington | | | | | | Mount St. Helens Alert Level Change | | | | | | Past Alert Level: Volcano Alert (Alert Level 3) | | New Alert Level: Volcano Advisory (Alert Level 2) | | | | | | October 6, 2004 9:15 A.M., PDT | |
| | | | Following yesterday morning's steam-and-ash eruption, seismicity | | dropped to a low level and has remained low. Low-level tremor observed | | following the eruption is also gradually declining. Lack of earthquake | | and rockfall signals suggest that deformation of the uplift area on | | the south side of the 1980-86 lava dome has slowed. Brief visual | | observations this morning from Coldwater Visitor Center showed weak | | steam emissions from the crater. We infer that the vigorous unrest of | | the past few days has lessened and that the probability of an imminent | | eruption that would endanger life and property is significantly less | | than at any time since Saturday, October 2, when the alert level was | | raised to Volcano Alert (Level 3). Therefore, we are lowering the | | alert level to Volcano Advisory (Alert Leve
2). | | | | | | Such decreases in the level of unrest, which may reflect a decrease in | | the rate of magma movement, have been common at Mount St. Helens | | during eruptions in 1980-86 and also at similar volcanoes elsewhere. | | Episodic changes in level of unrest over periods of days to weeks, or | | even months, are possible. We don't think that the current episode of | | unrest is over and we expect fluctuations in the level of unrest to | | continue during coming days and months. Everyone should be aware that | | escalation in unrest and perhaps an eruption could occur suddenly or | | with very little warning. There may be little time to raise the Alert | | Level before a hazardous event occurs. Therefore, we continue to | | monitor the situation closely and will issue additional updates a
d | | changes in Alert Level as warranted. | | |

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 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 94 of 106: Marcia  (MarciaH) * Wed, Oct  6, 2004 (21:36) * 7 lines 
 
U.S. Geological Survey, Vancouver, Washington | | University of Washington, Pacific Northwest Seismograph Network, | | Seattle, Washington | | | | | | Mount St. Helens Update, October 6, 2004, 7:00 a.m, PDT | | | | | | Current status is Volcano Alert (Alert Level 3); aviation color code | | RED | | | | | | Seismicity overnight has remained at very low levels. After the | | vigourous stea
-and-ash emission of yesterday morning, seismicity | | dropped with individual events becoming smaller. By about 5 p.m. PDT | | yesterday, individual events became rare and as of 11:00 p.m., | | seismicity has been stable at a low level. | | | | | | Yesterday, field crews continued to harden GPS sites for the | | approaching winter and retrieved data. The GPS sites on the dome | | survived the steam-and-ash emission and data are being received and | | processed at the observatory. The station on the northern flank of the | | dome, shows a trend of northward displacement totaling 2 cm in the | | last three days. This is the same sense of movement recorded by the | | nearby station that was destroyed by the first steam-and-ash emission | | on 1 October. Data from the other tw
stations on the dome, which were | | installed on 4 October are currently being analyzed. Data from GPS | | instruments on the outer flanks of the volcano show no movement of the | | outer flanks. | | | | | | No gas measurements were made yesterday. A seismic crew installed an | | additional broadband seismometer on the northwest flank of the volcano | | which will help show a broader range of seismic energy release. With | | the help of the U.S. Forest Service, field crews installed an antenna | | mast for a VSAT uplink which will improve our ability to retrieve data | | from the field. | | | |
| | It began raining t the mountain at about 7:30 p.m. PDT. By about 9:30 | | p.m. about 0.1 inch of rain had fallen. Overnight, the acoustic flow | | monitoror (AFM) in the crater indicated that several small debris | | flows had moved past the site. By midnight, higher flows were recorded | | at a station on the pumice plain, but none were large enough to | | trigger an automatic alert. We expect these types of flowage events to | | recur during intense rainstorms. | | | | | | Wind forecasts from the National Oceanic and Atmospheric | | Administration (NOAA), combined with eruption models, show winds this | | morning are from the west-southwest such that any ash clouds will | | drift to the east-northeast. | |
| | | | We continue to monitor the situation closely and will issue additional | | updates and Alert Level changes as warranted. | | | | | | Press conferences will continue to be held at the Headquarters office | | of the Gifford Pinchot National Forest. The morning press conference | | is at 9:30 AM. If activity remains low, we will do a show-and-tell of | | some of the instruments were are using to monitor the volcano at the | | press conference. | |

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 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 95 of 106: Curious Wolfie  (wolf) * Thu, Oct  7, 2004 (13:25) * 3 lines 
 
how is julie doing anyway, is she still checking in with spring?

(missed seeing you, marcia *HUGS*)


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 96 of 106: Paul Terry Walhus (terry) * Thu, Oct  7, 2004 (16:05) * 1 lines 
 
Haven't heard from that Cascade Climber for a while. Hope she checks in again soon.


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 97 of 106: Marcia  (MarciaH) * Fri, Oct  8, 2004 (12:38) * 1 lines 
 
Julie is fine and busy with college stuff. I'll ask her to check in when she gets a moment. My family geologist and family are heading off to MSH to encourage the magma to erupt. I'll report any information they send from the field. They have both cellular text messaging and email to work with. And.... a VERY good digital camera. It's time to commence the eruption dances!


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 98 of 106: Paul Terry Walhus (terry) * Fri, Oct  8, 2004 (22:26) * 1 lines 
 
Good luck on that journey, Marci. Looking forward to those pix.


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 99 of 106: Curious Wolfie  (wolf) * Sat, Oct  9, 2004 (11:15) * 1 lines 
 
are you going to MSH too, marcia? hope your family is safe over there!


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 100 of 106: Marcia  (MarciaH) * Sun, Oct 10, 2004 (21:37) * 8 lines 
 
No such luck, Wolfie. I am stuck in a slightly quaking New Madrid area. However the minor quakes of recent time here plus the world wide strong quakes:

A magnitude 7.1 earthquake NEAR THE COAST OF NICARAGUA has occurred at:
11.41N 86.55W Depth 61km Sat Oct 9 21:26:56 2004 UTC


Plus the eruption of Mount St Helens makes me wonder if the harvest moon (the closest to earth the moon gets in the yearly trek around its orbit) hs a great deal to do with what is happening. I am helping edit a large complex journal both last year's issue and this year's to come out next month so I am more than busy. I am also still working on the Kentucky lava paper.

However, whatever photos are sent on to me I will be more than happy to share here.


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 101 of 106: Cheryl  (CherylB) * Tue, Oct 12, 2004 (08:35) * 1 lines 
 
Looking forward to the photos, Marcia.


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 102 of 106: Marcia  (MarciaH) * Wed, Oct 13, 2004 (14:45) * 27 lines 
 
at this point I am looking forward to hearing from them in the field. From Julie I got the webcam site since it is steaming again. Then the following report:

Oct 13, 12:31 PM EDT

Lava Breaks Surface at Mount St. Helens

By PEGGY ANDERSEN
Associated Press Writer




SEATTLE (AP) -- After weeks of earthquakes and steam eruptions, Mount St. Helens has a new lava dome that could even eclipse the volcano's old one.

The quakes subsided as the new lava emerged Monday and cooled in the open air, suggesting molten rock from deep inside the Earth had found the path of least resistance by going around the old dome, said Jon Major, a hydrologist with the U.S. Geological Survey.

Unlike the dramatic rivers of red-hot lava from Hawaii's volcano, St. Helens' extrusion of new rock was subtle and difficult to see from outside the crater. A lazy plume of steam rose slowly from the mountain for much of Tuesday.

Infrared instruments recorded a surface temperature of nearly 1,100 degrees Fahrenheit, confirming that the second dome consisted of cooling lava rather than old rock which had been pushed upward, said USGS volcanologist Willie Scott.



"The fact that we see stuff at the surface that hot means it's new rock," Scott said.

The last dome-building activity at St. Helens began in the months after its deadly May 1980 eruption and lasted six years. Layers of emerging rock gradually formed a rocky dome nearly 1,000 feet tall at the center of the crater floor. The top of the new dome is almost level with the old one just to the north.

more... http://hosted.ap.org/dynamic/stories/M/MOUNT_ST_HELENS?SITE=KGW&SECTION=HOME&TEMPLATE=US-WORLD.html


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 103 of 106: Marcia  (MarciaH) * Wed, Oct 13, 2004 (14:47) * 3 lines 
 
Mount St Helens webcam:

http://www.fs.fed.us/gpnf/volcanocams/msh/


 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 104 of 106: Marcia  (MarciaH) * Wed, Oct 13, 2004 (15:54) * 7 lines 
 
/Mount St Helen's update October 13, 2004

Current status is Volcano Advisory (Alert Level 2); aviation color | | code ORANGE | | | | | | Seismic activity remained at a low, but slightly increasing level | | overnight. Yesterday's visual observations and thermal imaging of the | | 1980-86 lava dome, the intensely deforming and uplifting area on the | | south side of the dome, and the new lava extrusion first seen on | | October 11 were hampered by steam clouds. Conditions appeared similar | | to those of October 11, with high temperatures (up to 600 degrees C) | | around the fin-shaped lava extrusion in the western part of the | | uplift. The area of high temperature appears to have increased in | | size. Abundant steam continued to rise from the fin area to the crater | | rim, from which it wa
dispersed southeastward by strong winds. | | | | | | Today, field crews will take new thermal images of the crater floor | | and dome, make gas-sensing measurements, perform routine maintenance | | of GPS sites, and take hydrological measurements. | | | | | | Wind forecasts from the National Oceanic and Atmospheric | | Administration (NOAA), combined with eruption models, show generally | | northerly winds. Any ash clouds will drift southward to southeastward. | | | | | | As a result of the intense unrest of the pa
t two and one-half weeks | | and recent observations, we infer that magma is at a very shallow | | level and is extruding onto the surface. Incandescence from hot rock | | or gases reflects off steam clouds and is visible from north of the | | volcano. | | | |--------------------------------------------------------------------------|

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 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 105 of 106: Marcia  (MarciaH) * Thu, Oct 14, 2004 (00:40) * 34 lines 
 
This was from October 11, 2004 and the photos sent with the information show beautiful dusting of snow and a white plume of steam. That plume was visible this afternoon on the webcam.

Viewing conditions were very clear most of October 10, and fresh snow |
| had fallen to the level of the crater floor north of the dome. A USGS |
| field crew noticed a thin ash deposit on the snow in the crater and |
| just beyond the crater rim, trending southeast from the active area. |
| |
| |
| A steam plume rose to crater rim level or slightly above all day on |
| October 10, heading to the southeast. USGS field workers described the |
| plume as "lazy"?no gas thrust or notably vigorous convection was |
| observed. The plume was clean, with no noticeable ash or blue/orange |
| haze. The odor of H2S was noted at the crater breach, but not |
| elsewhere. |
| |
| |
| Helicopter field crews were at work on Sunday October 10. A |
| telemetered webcam was placed at Sugarbowl and GPS data were |
| downloaded. |
| |
| |
| The thermal imaging crew made an excellent video of the uplifted area |
| of the south crater floor. The western portion of the the uplift was |
| steaming over a large diffuse area. Maximum measured surface |
| temperatures were 200-300 deg. C. The thermal imaging crew judged the |
| uplifted area to have grown since it was last seen on the 7th. |
| |
| |
| No gas observations were made on October 10. |
| |
| |
| Rockfall deposits were not seen on or around the uplifted area, |
| perhaps indicating a lull in its growth or deformation. |



 Topic 77 of 92 [Geo]: Living with Volcanoes
 Response 106 of 106: Cheryl  (CherylB) * Thu, Oct 14, 2004 (15:25) * 1 lines 
 
Thanks to "them in the field".

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