Advanced search

Message boards : Cafe : Did You Feel It???

AuthorMessage
Profile geo...
Avatar
Send message
Joined: Mar 28 09
Posts: 44
ID: 20907
Credit: 18,531
RAC: 1,023
Message 1458 - Posted 24 Apr 2009 16:25:25

    Last modified: 24 Apr 2009 16:28:52

    Yes indeed--
    we felt all of 'em...





    ____________

    Braunie, yer doin' a heck of a job...

    Profile Carl Christensen
    Project administrator
    Project developer
    Send message
    Joined: Jan 9 08
    Posts: 437
    ID: 15
    Credit: 5,947
    RAC: 0
    Message 1459 - Posted 24 Apr 2009 16:42:24

      Last modified: 24 Apr 2009 16:58:02

      cool, I'm going to post a news item about this and link to this thread. so do you run qcnlive along side the "boinc/qcn"? that's cool they work together (I didn't know if one would "hijack" the sensor from another). you may want to check your hard drive if it's filling up, as qcnlive writes sac files out every 10 minutes!

      also I just put a new version of qcnlive up which has better 2D graphics and some other fixes:

      http://qcn.stanford.edu/qcnalpha/download/qcnlive-win.zip

      Profile geo...
      Avatar
      Send message
      Joined: Mar 28 09
      Posts: 44
      ID: 20907
      Credit: 18,531
      RAC: 1,023
      Message 1460 - Posted 24 Apr 2009 17:04:20 - in response to Message 1459.

        Last modified: 24 Apr 2009 17:05:39

        We had a little swarm.
        My wife's pewter was down for maintenance for the first one (3.8).
        I brought her back up and started qcnlive on both machines.
        We then got a 4.0, a 2.5, and a 1.8--
        thanx for all your good work...
        ____________

        Braunie, yer doin' a heck of a job...

        Profile Carl Christensen
        Project administrator
        Project developer
        Send message
        Joined: Jan 9 08
        Posts: 437
        ID: 15
        Credit: 5,947
        RAC: 0
        Message 1462 - Posted 24 Apr 2009 18:40:36 - in response to Message 1460.

          well thanks to you & your wife for running QCN -- this was one heck of a test of the software & the JoyWarrior's -- although as an east-coast Yankee I would have been shaking in my boots!

          Profile geo...
          Avatar
          Send message
          Joined: Mar 28 09
          Posts: 44
          ID: 20907
          Credit: 18,531
          RAC: 1,023
          Message 1470 - Posted 24 Apr 2009 22:44:59 - in response to Message 1462.

            Everything was shaking--
            boots included...
            ____________

            Braunie, yer doin' a heck of a job...

            Profile geo...
            Avatar
            Send message
            Joined: Mar 28 09
            Posts: 44
            ID: 20907
            Credit: 18,531
            RAC: 1,023
            Message 1472 - Posted 25 Apr 2009 0:19:17 - in response to Message 1470.

              Just had another 3.1--
              both sensors triggered...
              ____________

              Braunie, yer doin' a heck of a job...

              Kristin Weaver Bowman
              Send message
              Joined: May 23 08
              Posts: 1
              ID: 1150
              Credit: 3,231
              RAC: 486
              Message 1474 - Posted 25 Apr 2009 0:51:24

                I have a naive question. I personally detected all three Yorba Linda earthquakes yesterday, in one way or another. However, my laptop was closed (to protect it from kids). It wouldn't have been running BOINC/QCN while closed, right? If it had been running, how would I view the data so I could take a screen shot like the other users in this thread?

                Profile geo...
                Avatar
                Send message
                Joined: Mar 28 09
                Posts: 44
                ID: 20907
                Credit: 18,531
                RAC: 1,023
                Message 1484 - Posted 25 Apr 2009 17:57:44 - in response to Message 1474.

                  Last modified: 25 Apr 2009 18:01:11

                  If your computer was on, and recorded a quake trigger; where the data lives depends on your OS.
                  In Windows XP64 it's in (C:)>Documents and Settings>All Users>Application Data>BOINC>projects>qcn.stanford.edu_qcnalpha>triggers.
                  In there lives a Compressed (zipped) file for each trigger which, when unzipped, reveals 4 SAC files: significance level, and 3 components of motion (vertical, and two horizontals).

                  You have to have another program to display these SAC files as a siesmogram. Those programs are also OS specific and 3 or 4 have been discussed in these Forums. There's a discussion going on now in the "Questions and Answers:Windows" Forum, and I've seen a Unix/Linux SAC file reader mentioned somewhere.

                  ==============================

                  The USGS dropped that 3.1down to a 3.0--
                  and we've had a few (est. M2-3+) that don't show up in the USGS data...


                  http://quake.usgs.gov/recenteqs/FaultMaps/118-34.htm
                  ____________

                  Braunie, yer doin' a heck of a job...

                  [AF>france>pas-de-calais]symaski62
                  Send message
                  Joined: Sep 12 08
                  Posts: 22
                  ID: 1587
                  Credit: 0
                  RAC: 0
                  Message 1492 - Posted 25 Apr 2009 23:55:04

                    GG :)

                    Profile geo...
                    Avatar
                    Send message
                    Joined: Mar 28 09
                    Posts: 44
                    ID: 20907
                    Credit: 18,531
                    RAC: 1,023
                    Message 1529 - Posted 28 Apr 2009 23:56:57

                      Last modified: 29 Apr 2009 0:55:32

                      Addendumb...
                      ...there's also zipped SAC files in (64bitXP) (C:)>Documents and Settings>data.
                      I believe these are the files that Carl warned about that are created every 10 minutes qcnLive is running--
                      and have to be deleted if disk space is critical...

                      http://quake.usgs.gov/recenteqs/Quakes/quakes0_fault.htm

                      =================================================================
                      ____________

                      Braunie, yer doin' a heck of a job...

                      Profile Carl Christensen
                      Project administrator
                      Project developer
                      Send message
                      Joined: Jan 9 08
                      Posts: 437
                      ID: 15
                      Credit: 5,947
                      RAC: 0
                      Message 1532 - Posted 29 Apr 2009 0:51:29 - in response to Message 1529.

                        oh yeah it depends on your boinc installation. I think Macs it is usually in /Library/Application Data/BOINC/projects/qcn.stanford.edu_qcnalpha (or _sensor now I guess) --- similarly for Linux -- but Windows can be under C:\Program Files\BOINC\projects or in the separate data directory C:\ProgramData\BOINC etc.

                        well come to think of it qcnlive data will just be in the "data" folder of wherever you put qcnlive (with subfolders under "data" for each day you run qcnlive). I guess someday I'll take off the automatic dumping of everything in qcnlive and actually have the "Record" button work! :-)

                        Profile geo...
                        Avatar
                        Send message
                        Joined: Mar 28 09
                        Posts: 44
                        ID: 20907
                        Credit: 18,531
                        RAC: 1,023
                        Message 1700 - Posted 12 Jun 2009 23:39:35 - in response to Message 1532.

                          Last modified: 12 Jun 2009 23:47:27

                          ---------------------------------------------
                          I didn't feel it--
                          but it appears that I recorded a 1.6...
                          ---------------------------------------------

                          6802933 qcne_sc300_sta000_021488_0 12 Jun 2009 3:36:17 UTC 12 Jun 2009 3:36:22 UTC --- 0 3.096091 0.185529 33.881396 -117.791832 0.02 0 JoyWarrior 24F8 USB 4.82 83.83 47432.04

                          ======================================================================

                          == PRELIMINARY EARTHQUAKE REPORT ==
                          Southern California Seismic Network: a cooperative project of
                          U.S. Geological Survey, Pasadena California
                          Caltech Seismological Laboratory, Pasadena, California

                          Version #1: 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 08:36:04 PM (PDT) on Thursday, June 11, 2009.
                          The magnitude 1.6 event occurred 6 km (3 miles) SW of Yorba Linda, CA.
                          The hypocentral depth is 13 km ( 8 miles).


                          Magnitude 1.6 - local magnitude (Ml)
                          Time Thursday, June 11, 2009 at 08:36:04 PM (PDT)
                          Friday, June 12, 2009 at 03:36:04 (UTC)
                          Distance from Yorba Linda, CA - 6 km (3 miles) SW (227 degrees)
                          Fullerton, CA - 6 km (4 miles) ESE (106 degrees)
                          Anaheim, CA - 6 km (4 miles) NE (54 degrees)
                          Los Angeles Civic Center, CA - 42 km (26 miles) ESE (122 degrees)
                          Coordinates 33 deg. 51.3 min. N (33.854N), 117 deg. 51.3 min. W (117.856W)
                          Depth 12.6 km (7.8 miles)
                          Quality Fair
                          Location Quality Parameters Nst=027, Nph=027, Dmin=7 km, Rmss=0.27 sec, Erho=0.9 km, Erzz=1.1 km, Gp=180 degrees
                          Event ID# ci14472528
                          Additional Information map

                          http://quake.usgs.gov/recenteqs/FaultMaps/118-34.htm
                          ____________

                          Braunie, yer doin' a heck of a job...

                          Profile Carl Christensen
                          Project administrator
                          Project developer
                          Send message
                          Joined: Jan 9 08
                          Posts: 437
                          ID: 15
                          Credit: 5,947
                          RAC: 0
                          Message 1703 - Posted 13 Jun 2009 17:24:10 - in response to Message 1700.

                            that's pretty small, but maybe you did. I'll have the files sent up. usually our "effective minimum" is a mag 3.0

                            Profile geo...
                            Avatar
                            Send message
                            Joined: Mar 28 09
                            Posts: 44
                            ID: 20907
                            Credit: 18,531
                            RAC: 1,023
                            Message 1706 - Posted 14 Jun 2009 23:30:01 - in response to Message 1703.

                              Last modified: 14 Jun 2009 23:36:44

                              The "USGS" changed the location again:

                              http://quake.usgs.gov/recenteqs/Quakes/ci14472528.htm

                              ===================================

                              == PRELIMINARY EARTHQUAKE REPORT ==
                              California Integrated Seismic Net
                              USGS/ Caltech/ CGS/ UCB/ UCSD/ UNR
                              Version #1: 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 microearthquake occurred at 8:36:04 PM (PDT) on Thursday, June 11, 2009.
                              The magnitude 1.6 event occurred 3 km (2 miles) S of Placentia, CA.
                              The hypocentral depth is 13 km ( 8 miles).


                              Magnitude 1.6 - local magnitude (ML)
                              Time Thursday, June 11, 2009 at 8:36:04 PM (PDT)
                              Friday, June 12, 2009 at 3:36:04 (UTC)
                              Distance from Placentia, CA - 3 km (2 miles) S (181 degrees)
                              Anaheim, CA - 4 km (2 miles) ENE (57 degrees)
                              Villa Park, CA - 6 km (4 miles) NW (316 degrees)
                              Yorba Linda, CA - 7 km (4 miles) WSW (240 degrees)
                              Los Angeles Civic Center, CA - 42 km (26 miles) ESE (122 degrees)

                              Coordinates 33 deg. 51.3 min. N (33.854N), 117 deg. 51.3 min. W (117.856W)
                              Depth 12.6 km (7.8 miles)
                              Location Quality Fair
                              Location Quality Parameters Nst= 27, Nph= 27, Dmin=7 km, Rmss=0.27 sec, Erho=0.9 km, Erzz=1.1 km, Gp=180 degrees
                              Event ID# ci14472528
                              Additional Information map with fault names
                              Google Earth KML (Requires Google Earth.)
                              Waveforms

                              ==========================================

                              Another in the long line of disappearing Yorba Linda earthquakes...

                              Profile geo...
                              Avatar
                              Send message
                              Joined: Mar 28 09
                              Posts: 44
                              ID: 20907
                              Credit: 18,531
                              RAC: 1,023
                              Message 1707 - Posted 15 Jun 2009 18:06:17 - in response to Message 1706.

                                Last modified: 15 Jun 2009 18:25:52

                                Now, after being reviewed by seismologists, they show 2 different 1.5 quakes (with different Event ID#'s) at the exact same time, at different depths!!!

                                == PRELIMINARY EARTHQUAKE REPORT ==
                                California Integrated Seismic Net
                                USGS/ Caltech/ CGS/ UCB/ UCSD/ UNR
                                Version #O: This report supersedes any earlier reports of this event.
                                This event has been reviewed by a seismologist.
                                A microearthquake occurred at 8:36:05 PM (PDT) on Thursday, June 11, 2009.
                                The magnitude 1.5 event occurred 1 km (1 miles) WSW of Yorba Linda, CA.
                                The hypocentral depth is 6 km ( 4 miles).


                                Magnitude 1.5 - local magnitude (ML)
                                Time Thursday, June 11, 2009 at 8:36:05 PM (PDT)
                                Friday, June 12, 2009 at 3:36:05 (UTC)
                                Distance from Yorba Linda, CA - 1 km (1 miles) WSW (250 degrees)
                                Placentia, CA - 5 km (3 miles) E (91 degrees)
                                Villa Park, CA - 7 km (5 miles) N (6 degrees)
                                Anaheim, CA - 9 km (6 miles) ENE (58 degrees)
                                Los Angeles Civic Center, CA - 45 km (28 miles) ESE (115 degrees)

                                Coordinates 33 deg. 52.9 min. N (33.882N), 117 deg. 48.2 min. W (117.803W)
                                Depth 5.7 km (3.5 miles)
                                Location Quality Good
                                Location Quality Parameters Nst=016, Nph=016, Dmin=6 km, Rmss=0.11 sec, Erho=0.6 km, Erzz=2.6 km, Gp=133.2 degrees
                                Event ID# ci14472536
                                Additional Information map with fault names
                                Google Earth KML (Requires Google Earth.)


                                ==================================
                                == PRELIMINARY EARTHQUAKE REPORT ==
                                California Integrated Seismic Net
                                USGS/ Caltech/ CGS/ UCB/ UCSD/ UNR
                                Version #M: This report supersedes any earlier reports of this event.
                                This event has been reviewed by a seismologist.
                                A microearthquake occurred at 8:36:05 PM (PDT) on Thursday, June 11, 2009.
                                The magnitude 1.5 event occurred 3 km (2 miles) ESE of Placentia, CA.
                                The hypocentral depth is 10 km ( 6 miles).


                                Magnitude 1.5 - local magnitude (ML)
                                Time Thursday, June 11, 2009 at 8:36:05 PM (PDT)
                                Friday, June 12, 2009 at 3:36:05 (UTC)
                                Distance from Placentia, CA - 3 km (2 miles) ESE (102 degrees)
                                Yorba Linda, CA - 3 km (2 miles) WSW (248 degrees)
                                Villa Park, CA - 7 km (4 miles) N (354 degrees)
                                Orange, CA - 8 km (5 miles) N (9 degrees)
                                Los Angeles Civic Center, CA - 44 km (27 miles) ESE (117 degrees)

                                Coordinates 33 deg. 52.6 min. N (33.876N), 117 deg. 49.2 min. W (117.819W)
                                Depth 10.3 km (6.4 miles)
                                Location Quality Fair
                                Location Quality Parameters Nst= 20, Nph= 20, Dmin=6 km, Rmss=0.16 sec, Erho=0.7 km, Erzz=1.4 km, Gp=154.8 degrees
                                Event ID# ci14472528
                                Additional Information map with fault names
                                Google Earth KML (Requires Google Earth.)
                                Waveforms


                                http://quake.usgs.gov/recenteqs/FaultMaps/118-34.htm

                                Profile geo...
                                Avatar
                                Send message
                                Joined: Mar 28 09
                                Posts: 44
                                ID: 20907
                                Credit: 18,531
                                RAC: 1,023
                                Message 1708 - Posted 15 Jun 2009 22:24:10 - in response to Message 1707.

                                  > (Message 1700) geo...
                                  "I didn't feel it--
                                  but it appears that I recorded a 1.6..."

                                  > (Message 1703) Carl
                                  "usually our "effective minimum" is a mag 3.0"

                                  > (Message 1707) geo...
                                  "Now, after being reviewed by seismologists, they show 2 different 1.5 quakes at the exact same time"

                                  < two 1.5's at the same time = 3.0???<insert smileyface...>

                                  Post to thread

                                  Message boards : Cafe : Did You Feel It???


                                  Return to Quake-Catcher Network Seismic Monitoring main page


                                  Copyright © 2009 Stanford University