Page 2 of 3 FirstFirst 123 LastLast
Results 31 to 60 of 71

Thread: Newberry Caldera Activity

  1. #31
    Join Date
    Nov 2001
    Posts
    3,272
    A single, short duration, probable Volcanic Tremor detected inside the Caldera at 5am this morning. It behaved more like a quake in that it's duration was only about 40 seconds.

    Registering 1.2 mag, at 8.4km depth which put it's right inside the middle of the estimated area of the magma pool for Newberry. Likely this was a large peice of rock breaking of the roof of the magma chamber and sloshing through the magma. Or possibly a gas pocket in the magma that burst.

    Here the is waveform URL for today's event.

    http://www.pnsn.org/event/60516792#waveforms

    And a URL for one earlier this week that was not related to magma directly, and a standard quakes waveform.

    http://www.pnsn.org/event/60515647#waveforms

  2. #32
    Join Date
    May 2002
    Posts
    5,455
    Quote Originally Posted by Squink View Post
    Hydroshearing achieved!

    Nice new general overview of the Newberry geothermal project:
    Volcano power plan gets U.S. go-ahead
    The included video is a little propagandic, but does include a description of how they intend to open fracture fields at multiple depths from a single well.
    Quote Originally Posted by Squink View Post
    Lot of good stuff in those links. I looked for more information a few months back and only found these two:

    Newberry Crater Geothermal
    Geothermal project starts soon. We forecast some small quakes near Newberry Volcano.

    As for the microquakes, those are common everywhere, they are recent to Newberry since the geothermal project, but not worrisome at all AFAIK.


    Quote Originally Posted by dgavin View Post
    Newberry Caldera now has the distiction of being the best monitored volcano in the USA.
    Mt St Helens has 20, Newberry has 12. You can't say the 3 Sisters monitoring is really Newberry monitoring anymore than Mt Rainier seismographs are there to monitor Mt St Helens. If you want to look at regional seismographs, it's Puget Sound that has the most monitors.

    And there are a lot of seismograph monitors in AK, HI, Yellowstone, and the Mammoth Lakes area in CA. Are you sure Newberry is more closely monitored?

    Quote Originally Posted by dgavin View Post
    14 siesmographs in the direct vicinity, with 3 others near by in the bend/bachlor area, and even more in the sisters volcanic area and south on HWY 97.
    Where do you see 14? Just curious, not questioning. Never mind, found it in one of my own links.

    Quote Originally Posted by dgavin View Post
    Why so much monitoring? It is the top most dangerous volcano in Oregon, in that it is close to Bend with a population of a quarter million and has a history of an occasional VEI 7 level eruption (St. Helens was a VEI 5, Yellowstone super eruptions were VEI 8)
    I thought they added a few extra seismographs for the geothermal drilling? I'm not aware there is any worrisome activity in the Newberry caldera. The two active super volcanoes to watch currently are Yellowstone and the Long Valley Caldera in the Mammoth Lakes area of CA. Perhaps you know more about Newberry? It's a fascinating place. I love the obsidian and cinder cones in the area.

    Quote Originally Posted by dgavin View Post
    But more importantly, it is the first volcanic region where hydrothermal power drilling is being done -where- they planned ahead by getting siesmic equipment down first.....
    According to Squink's links, they do this all the time in Iceland when building geothermal energy plants.
    Last edited by beskeptical; 2013-Apr-12 at 12:14 AM.

  3. #33
    Join Date
    Nov 2001
    Posts
    3,272
    I thought they added a few extra seismographs for the geothermal drilling? I'm not aware there is any worrisome activity in the Newberry caldera. The two active super volcanoes to watch currently are Yellowstone and the Long Valley Caldera in the Mammoth Lakes area of CA. Perhaps you know more about Newberry? It's a fascinating place. I love the obsidian and cinder cones in the area.
    Take a look at a good satellite image of the area around Newberry (Google maps works). You will see 2 very old circular volcanic area's both about 40km diameter to the south of it next to each other, and a third, much fainter, that's been partially broken up by Newberry on it's east edge. Those are very ancient hot spot/subduction caldera's. It appears that some time in it's past Newberry area, like its sisters Yellowstone and Long Valley, produced some VEI 7+ mini super eruptions, about 1/8 the force of the Yellowstone ones.

    It's assumed I think, that now that the Newberry part of the hot spot has mixed with subduction magma, it might not be capable of such eruption's any more, but the 8kw wide caldera on newberry means that it is still capable of an eruption about 1/20th the size of Yellowstone, something on the order of the eruption that formed crater lake.

    The pyroclastic flow from a VEI 7 of that scale, would reach Bend and might actually consume that city entirely, if the force of it headed that direction.

    Most of this is logical conjecture, based on those three old caldera's and it's current one. The evidence of those old eruptions has been buried by more recent activity, so I don't think it's considered mainstream yet.

  4. #34
    Join Date
    May 2002
    Posts
    5,455
    I understand Newberry's history, dgavin, and I know about the caldera. Maybe that wasn't clear from my post?

    Of the three calderas and possible super-volcano eruptions, Yellowstone and Long Valley have evidence of magma chamber activity, I don't think Newberry does at the moment. Obviously there is magma there or it wouldn't make a potential geothermal site, but when I think about worrisome calderas, I don't think about Newberry. Maybe I should investigate further.

  5. #35
    Join Date
    Nov 2001
    Posts
    3,272
    I'll dig up some stuff on Newberry for you

  6. #36
    Join Date
    May 2002
    Posts
    5,455
    Quote Originally Posted by dgavin View Post
    I'll dig up some stuff on Newberry for you
    Since I'm very familiar with the geology, dig me up anything on the most recent activity in the magma chamber. Thanks.

  7. #37
    Join Date
    Nov 2001
    Posts
    3,272
    An article on Tomographic Imaging of Newberry. http://around.uoregon.edu/story/rese...-magma-under-n

    If that display is correct, then the magma pool while considered cool and perhaps solid, extends very close to the surface, within .5 of a km. There also does appear to be a hotter developing pool at the 8km region, which is where the recent volcanic tremor happened.

  8. #38
    Join Date
    May 2002
    Posts
    5,455
    It appears to be consistent with what I said, not particularly worrisome at the moment.

  9. #39
    Join Date
    Nov 2005
    Posts
    3,464
    1/2 and 8 kilometers below the surface should be great as a geothermal energy source. Is anyone considering a project? Neil

  10. #40
    Join Date
    Nov 2001
    Posts
    3,272
    Quote Originally Posted by neilzero View Post
    1/2 and 8 kilometers below the surface should be great as a geothermal energy source. Is anyone considering a project? Neil
    Yes see the Alta-rock links in earlier topics in this same thread, ther drilling there has already reached it's 1st phase and they are getting ready to drill to the next target depth.

  11. #41
    Join Date
    Nov 2001
    Posts
    3,272
    USGS has confirmed the low frequency event on 4/11/13 as a volcanic tremor, and the first one ever recorded at Newberry, and related to water, gas, or other fluids moving around.

    For a change it looks like I called this one correctly.

    It is nothing to worry over as beskeptical said.

    With all the additional monitoring around Newberry now, we'll probably be seeing a better picture so to speak of the caldera's low level activity, and of some things that have been missed in the past. Not three years ago it was only monitored by two seismographs, the one at Newberry, and the one at nearby Pine Mountain.

  12. #42
    Join Date
    Nov 2001
    Posts
    3,272
    There was another low frequency volcanic tremor, .2 magnitude, this time at the western most group of cinder cones, on the lower flanks of newberry. 14.2 km depth and about 12km west from the crater rim.

  13. #43
    Join Date
    Nov 2001
    Posts
    3,272
    My best guess here says the two volcanic tremors are nothing out of the ordinary for Newberry.

    That being said, I would also guess at this point, if three or so more of these show up in the next few weeks, that Newberry would be upgraded to condition yellow earlier, as opposed to later. Mostly due to it being an already active hydrothermal area, with the addition of tremors, even if infrequent, 2 of four of the precursor conditions typically preceding activity will have been met. USGS will probably error on the side of caution if that does happen, instead of preventing a little worry.

  14. #44
    Join Date
    May 2002
    Posts
    5,455
    Linky next time, please so we don't have to go looking for something you already found?

    Here's the seismograph readout.

    They seem to be calling it a "low frequency event" rather than a harmonic tremor though clearly the graph looks like a harmonic trace. They also say it could be any fluid moving, not necessarily magma.

    You may be jumping the gun, dgavin.
    Last edited by beskeptical; 2013-Apr-18 at 11:40 PM.

  15. #45
    Join Date
    Nov 2001
    Posts
    3,272
    I may be jumping the gun, but I think with Newberry being a duel magma type volcano, only one of two, that they'll probably move up it's alert stage earlier if this trend continues, then later. There isn't a lot of research about how the duel types behave, so I think they might play it on the side of safety with Newberry.

    And I had posted the link, right to the seismograph, it was a few posts above where you joined this thread.

    http://cosmoquest.org/forum/showthre...82#post2120882
    Last edited by dgavin; 2013-Apr-19 at 12:13 AM.

  16. #46
    Join Date
    May 2002
    Posts
    5,455
    Quote Originally Posted by dgavin View Post
    I may be jumping the gun, but I think with Newberry being a duel magma type volcano, only one of two, that they'll probably move up it's alert stage earlier if this trend continues, then later. There isn't a lot of research about how the duel types behave, so I think they might play it on the side of safety with Newberry.

    And I had posted the link, right to the seismograph, it was a few posts above where you joined this thread.

    http://cosmoquest.org/forum/showthre...82#post2120882
    Where is the link to this: "USGS has confirmed the low frequency event on 4/11/13 as a volcanic tremor"?

  17. #47
    Join Date
    Nov 2001
    Posts
    3,272
    USGS doesn't give direct links to it's articles, but you can find it here in the archives url. http://volcanoes.usgs.gov/observator...s_archive.html

  18. #48
    Join Date
    Nov 2001
    Posts
    3,272
    Nothing from USGS or PNSN on this yet, but a long duration (close to 5 hours) but very very weak volcanic tremor <.1 mag occured somewhere in the area of either Newberry Caldera, or the 3 Sisters. I verified this on 8 seismograph stations around the two areas and also checked this did not coincide with a larger event world wide. Although the long duration is notable, and fairly well inidacte it's magmatic in origin, it was so weak I don't think this will make the USGS or PNSN reports. It hardly qualifies as background activity.

    Posting about it, as it's a notable long duration event.

    Here is the cleanest display, from Sisters 'Wife' Seismograph station, of the tremors starting just after 7pm on the 20th, upto midnight.

    http://www.pnsn.org/seismogram/2013/5/21/wife/bhz/cc/

  19. #49
    Join Date
    Nov 2001
    Posts
    3,272
    Last week USGS report indicated starting on Jun 3rd a number of very tiny earthquakes at Neberry Caldera. To weak to even show on the USGS web quakes page, which means they were less then -2 magnitude. I checked the seismographs in the area, and these quakes are too short, too low of magnitude to determine if they are volcanic or flault zone related. As these are still going on through today, I'm going to side that they are fault type quakes, possibly related to the 1-5mm/year uplift around the north side of the caldera.

  20. #50
    Join Date
    Nov 2001
    Posts
    3,272
    2 small tremors 2.1 and 1.1 mag, about 20 km to the east of Newberry, and due south from Pine Mountain, at the edge of the cinder cone field. They appear to be beep, 12-15 km, and have signature that indicates a hydrologic, gas or magma origin. Very short duration, so it's most likely a gas pocket rupture of some kind.

  21. #51
    Join Date
    Nov 2001
    Posts
    3,272
    2 more quakes in the same region as the 2 tremors posted above, but these are standard stike/slip fault quakes. I think my assement of a gas pocket rupture is most likely, and now are seeing some related fault type quakes.

  22. #52
    Join Date
    Nov 2001
    Posts
    3,272
    The 4 quakes I mentioned in the above two posts, were part of a swarm, that I missed reading properly as the PNSN has changed thier lower mag limits recently. It made the USGS status report on Friday however, as this is the first time any activity has been seen in this region just outside of Newberry, known at Quartz Mountain.

    This is an odd area as Quartz Mountain complex seems to be a thrust/slow uplift built type of mountain area, yet, it's in the middle of the Newberry cindercone fields.

  23. #53
    Join Date
    Nov 2001
    Posts
    3,272
    25 tiny microquakes last week at Newberry.

    Per USGS

    Recent Observations: Twelve earthquakes were located on the southeast flank of Newberry volcano November 14-15 by the Pacific Northwest Seismic Network (PNSN). An additional 12 earthquakes were detected but were too small to be located. The events began at just after midnight on Nov. 14, 12:21 a.m. local time (0821 UTC), but occurred mostly in two bursts on Nov. 15. All events are fairly shallow. The largest earthquake was magnitude 2.0, occurring at 3:10 a.m. local Nov. 15 (1110 UTC) at a depth of 3.9 km; other events have depths generally less than 6 km.
    I examined a few of the seismograph records and they appear to be regular earthquakes, and are not volcanic tremors.

  24. #54
    Join Date
    Nov 2001
    Posts
    3,272
    Was quiet last week, but 2 more tiny earthquakes this week so far. One in the same region of the swarm a few weeks ago, and another in the caldera. Again regular quakes and not volcanic tremors.

  25. #55
    Join Date
    Jun 2002
    Posts
    1,970
    Geothermal power pilot project at Newberry is on hold til spring as AltaRock looks for more funding. Not all is peachy:
    There was, however, a problem with the casing for the injection well, which Petty said, will be fixed in the spring.

  26. #56
    Join Date
    Nov 2001
    Posts
    3,272
    The last two weeks have seen over 300 Ice Quakes at Newberry Caldera. Thats right, Ice Quakes, not Earth Quakes. They show up really well on today's siesmographs as there is no wind.

    There were also 4 more quakes in the afore mentioed SE flank region. And one hydrologic appearing tremor on the SW flank, near the AltaRock region, I'm assumign it's related to the AltaRock Hydrothermal drilling operations.

  27. #57
    Join Date
    Nov 2001
    Posts
    3,272
    Ice Quakes, and now 2 Ice Tremors abound at Newberry Caldera. Here is one of the Seismographs web graphs that shows both. The Tremors are the two longer duration readings, and the 'blips' are the ice quakes.

    http://www.pnsn.org/seismogram/2013/12/11/cpco/bhz/cc/

    I'm not going to keep a running total of these Ice Quake, on average, it's around 50 to 60 Ice Quakes a day.
    Last edited by dgavin; 2013-Dec-12 at 07:33 PM.

  28. #58
    Join Date
    Nov 2001
    Posts
    3,272
    There was a short duration volcanic tremor at Newberry this week, on the flank west of Paulina peak. There was an additional tremor on the north flank this weak as well, but it's signature and depth of .1km, indicate a hydrothermal source. These are tremors, but not harmonic tremors. So techically it's background activity and nothting to worry over. My guess is they won't even make it onto USGS's friday update.
    Last edited by dgavin; 2013-Dec-31 at 08:28 PM.

  29. #59
    Join Date
    Nov 2001
    Posts
    3,272
    Starting 9/28 there has been an ongoing swarm of minor quakes at Newberry Caldera. 116 events so far. Cannot log them all in one post so leaving the log off for now.

  30. #60
    Join Date
    Nov 2001
    Posts
    3,272
    Tremors (-unofficially-) detected at Newberry, starting at around 11am PDT yesterday and going though 5pm. Very similar signature to wind gusts, but every 15 minute wind records show only peaks of 10mph gusts, and avg. 3mph normal. Additionally these peaks of wind occurred outside where these reading show, with no readings then. Some of these readings were picked on Pine Mt.'s strong motion station. I think because that station almost always show's wind, and did not, just showed the strongest events, I can discount this being wind related readings.
    Last edited by dgavin; 2014-Oct-11 at 03:39 PM.

Similar Threads

  1. Yellowstone Caldera Activity
    By dgavin in forum Geology & Planetary Surfaces
    Replies: 298
    Last Post: 2015-Aug-25, 11:08 AM
  2. Newberry Caldera's Hotspot, Not mantle plume related?
    By dgavin in forum Science and Technology
    Replies: 0
    Last Post: 2010-May-28, 02:23 PM
  3. Okmok Caldera Erupts
    By Chip in forum Science and Technology
    Replies: 22
    Last Post: 2009-Mar-11, 08:02 PM
  4. Newberry Caldera Strikes Back
    By dgavin in forum Science and Technology
    Replies: 9
    Last Post: 2006-Oct-12, 10:29 AM
  5. Neberry Caldera Activity
    By dgavin in forum Science and Technology
    Replies: 3
    Last Post: 2006-Sep-26, 06:39 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •