X-Sympa-To: ids.analysis.forum Received: from hector.cls.fr (osis.cls.fr [62.161.32.21]) by hermes.cls.fr (8.9.3/8.9.3) with ESMTP id OAA05360 for ; Mon, 13 Jun 2005 14:13:03 +0200 Received: by hector.cls.fr (Postfix) id 163C0C439B; Mon, 13 Jun 2005 12:13:03 +0000 (GMT) Delivered-To: ids.analysis.forum@cls.fr Received: from PC-valette.cls.fr (orange-103.cls.fr [62.161.32.14]) by hector.cls.fr (Postfix) with ESMTP id B57F91443A9 for ; Mon, 13 Jun 2005 12:13:02 +0000 (GMT) Message-Id: <5.1.0.14.2.20050613140832.038170e8@pop.cls.fr> X-Sender: jvalette@pop.cls.fr X-Mailer: QUALCOMM Windows Eudora Version 5.1 Date: Mon, 13 Jun 2005 14:13:01 +0200 To: ids.analysis.forum@cls.fr From: Jean-Jacques Valette Subject: Re: [ids.analysis.forum] IDS-ITRF2004: station discontinuities In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1"; format=flowed Content-Transfer-Encoding: 8bit X-Validation-by: valette@cls.fr Dear Martine, dear colleagues, In order to help in finding correlations between DORIS breaks and sismicity, a tool has been developed to extract from the usgs earthquakes database those who had occurred in the vicinity of a DORIS site. You may find, in the IDS Central Bureau ftp site, three files that give the list of earthquakes following the criteria: - magnitude higher than 6 within 3000 km (1997-up ot now) - magnitude higher than 5 within 1000 km (1997-up to now) - magnitude higher than 3 within 100 km (1998-2004) Updates between 1992-1997 will be done soon. ftp://ftp.cls.fr/pub/ids/stations/earthquakes/ Hereafter are the comparison with the "DORIS breaks" listed in your report or previously by Pascal, John, Laurent and other analysts. **************************************************** date mag lat long StatId Dist(km) **************************************************** COLA (7N,80E) 16/11/1999 ------------------------- 11/11/1999 6.2 1.28 100.32 COLA 2353 15/11/1999 6.3 -1.34 88.98 COLA 1365 KRAB (56N,92E) 1/1999 - 01/2000 -------------------------------- 31/ 5/2000 5.0 51.69 104.94 KRAB 928 27/10/2000 5.7 54.71 94.98 KRAB 198 27/ 9/2003 7.3 50.04 87.81 KRAB 741 SAKA (47N,142E) 10/10/1994 & 25/11/2001 ----------------------------------------- ( date mag deep lat long 1994/10/ 9 6.5 33 43.90 147.92 earthquake in the database but not processed) 28/ 1/2002 6.1 49.38 155.59 SAKA 988 SODB 2002/10/3 --------------- 3/10/2002 6.5 23.32 251.47 SODB 569 FAIB 3/11/2002 --------------- 3/11/2002 7.9 63.52 212.56 FAIB 161 AREA 23/06/2001 ---------------- 23/ 6/2001 8.4 -16.26 286.36 AREA 230 23/ 6/2001 6.1 -17.18 287.36 AREA 145 26/ 6/2001 6.7 -17.75 288.35 AREA 143 7/ 7/2001 7.6 -17.54 287.92 AREA 134 EASB 12/02/1998 ----------------- 31/ 1/1998 6.0 -35.76 262.94 EASA 1510 12/ 2/1998 5.1 -27.40 250.12 EASA 56 Hoping it will help. Best regards, JJ Valette At 15:01 10/06/2005 +0200, you wrote: >Dear colleagues > >To help the dicussion of the IDS contribution to ITRF2004, we have set up >a web page http://lareg.ensg.ign.fr/IDS/ITRF2004.html that gives access to >a number of plots and analyses of the time series of DORIS coordinates. > >The first aspect we propose for convergence of opinions is the list of >station discontinuities. > >PROPOSED EXTENDED LIST OF DISCONTINUITIES > >The list of discontinuities agreed upon by the three Analysis Centers for >their ITRF2004 submissions is available at >http://lareg.ensg.ign.fr/IDS/ITRF2004/discont.html > >An additional list of station discontinuities is under discussion in June >2005. These discontinuities that were discussed between ign and lca are >listed hereafter, with the Analysis Coordinator (ac) comments and a final >proposal, using the discontinuity qualifier proposed by R. Ferland. >P: position change; V: velocity change. > >For some proposed discontinuities in the case of a nearby earthquake, we >propose to wait until the expected effect is known. There are ongoing >studies on this problem. > >--------------------------------------------------------------------------------- >Sta Event Date Type Recommendations & Comments > ign lca ac >--------------------------------------------------------------------------------- >COLA Restart 01 Jul 2001 P yes yes YES >EASA Earthquake? 12 Feb 1998 V yes yes? NO Wait for effect evaluation >EVEB Restart 01 Jan 1997 P yes yes YES >EVEB Restart 01 Jan 2003 P yes yes YES >FAIA 01 Jan 1996 V yes? yes NO Wait for effect evaluation >FAIB Noisier in 2nd part of 2002 - - NO >KESB Restart 01 Jul 2004 P yes yes NO Wait for more data >KRAB Restart 01 Jan 2000 P yes no NO Non linear motion mostly >annual >MARB Restart 01 Apr 2003 P yes yes YES >ROTA ~ 1996-1997 V ? yes NO Up motion non linear but >smooth >STJB Restart 01 Sep 2002 V yes yes NO No obvious date for a change >TRIB Earthquake? 31 Jul 2004 P yes ? NO Wait for more data >--------------------------------------------------------------------------------- > >The above table is available at >http://lareg.ensg.ign.fr/IDS/ITRF2004/discont.html#p2, which >provides links to plots of the station motions measured by ign and lca >and to plots of coordinate residuals for ign, ina, and lca prepared by the >Analysis Coordinator Team. > >The topic of our next proposal will be the selection of a core network >suitable to best insure the long term consistency of the IDS >contribution. > >Looking forward to your inputs > >The IDS Analysis Coordination team >Martine Feissel-Vernier Karine Le Bail Jean-Jacques Valette > > > > > > > > > > > ------------------------------------------------------------------------------ Jean-Jacques VALETTE (Jean-Jacques.Valette@cls.fr) COLLECTE LOCALISATION SATELLITES 8-10 Rue Hermès Parc Technologique du Canal 31520 Ramonville St-Agne FRANCE Tel (+33) 05.61.39.47.62 Fax (+33) 05.61.39.48.06 http://www.cls.fr -------------------------------------------------------------------------------