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 KAA13967 for ; Sat, 5 Nov 2005 10:42:56 +0100 Received: by hector.cls.fr (Postfix) id 709F6A81D3; Sat, 5 Nov 2005 08:43:18 +0000 (GMT) Delivered-To: ids.analysis.forum@cls.fr Received: from rly19e.srv.mailcontrol.com (orange-102.cls.fr [62.161.32.13]) by hector.cls.fr (Postfix) with ESMTP id 92B7A82B73 for ; Sat, 5 Nov 2005 08:43:17 +0000 (GMT) Received: from wproxy.gmail.com (wproxy.gmail.com [64.233.184.193]) by rly19e.srv.mailcontrol.com (MailControl) with ESMTP id jA58hEfI029774 for ; Sat, 5 Nov 2005 08:43:14 GMT Received: by wproxy.gmail.com with SMTP id i4so392323wra for ; Sat, 05 Nov 2005 00:43:13 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=rrzeGoLZeJUNz5OEoLgHz8QBVZyKxE/3HmDA0exkXeR/0kmH/mhlFBMQqstjeEf4VFoIOHfL1w3JZRkKR4oWM7a3TmtfWEaROwGfWn4dPxNnVoA3hE04n97lc6qGtyStbvxTsPqSxW6eYSkwuhblqAR0wpF1EKeSRSQkTdikYh4= Received: by 10.65.235.11 with SMTP id m11mr3150682qbr; Sat, 05 Nov 2005 00:43:13 -0800 (PST) Received: by 10.65.254.15 with HTTP; Sat, 5 Nov 2005 00:43:13 -0800 (PST) Message-ID: <5bedce70511050043g1ae65cdfm@mail.gmail.com> Date: Sat, 5 Nov 2005 09:43:13 +0100 From: Martine Feissel-Vernier To: Jayles Christian Subject: Re: Dyonisos and other long-term observing DORIS stations Cc: pwillis , Herve Fagard , Coutin-Faye Sophie , ids.governing.board@cls.fr, ids.analysis.forum@cls.fr In-Reply-To: <200511041814.jA4IEjL00057@cnes.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Disposition: inline References: <200511041814.jA4IEjL00057@cnes.fr> X-Mailcontrol-Inbound: zkJhdfFft6FKVs21YLQznMWfYOrkVYivVTJwr60SF60= X-Spam-Score: -0.9 X-Scanned-By: MailControl A-05-40-01 (www.mailcontrol.com) on 10.69.0.129 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by hermes.cls.fr id KAA13967 X-Validation-by: laurent.soudarin@cls.fr Dear colleagues To help in the examination of the relative merits of the DORIS sites and stations in the long term, you may find it useful to consider a set of global analyses that were prepared by the IDS Analysis Coordination team in 2005. They are available through URL http://lareg.ensg.ign.fr/IDS/ITRF2004.html They include plots of weekly residuals at http://lareg.ensg.ign.fr/IDS/ITRF2004/graphs/ with explanation at http://lareg.ensg.ign.fr/IDS/ITRF2004/graphs_readme.html and stability analyses at http://lareg.ensg.ign.fr/IDS/ITRF2004/lcawd12.a.txt http://lareg.ensg.ign.fr/IDS/ITRF2004/ignwd05.a.txt http://lareg.ensg.ign.fr/IDS/ITRF2004/inawd03.a.txt Two columns may be of special interest in this discussion: - %Ms giving the percentage of missing weeks in the series - Stb ind (last column) giving the station stability index. Small stability indices are for stable stations. The explanation of these tables is at http://lareg.ensg.ign.fr/IDS/ITRF2004/core_net_readme.pdf Finally, I send a copy of this message to ids.analysis.forum@cls.fr which I believe was set up exactly for this type of discussion. Best regards Martine Feissel-Vernier IDS Analysis Coordinator, Feb 2002-Oct 2005 ----------------------------------------------------------------------------------------------------- 2005/11/4, Jayles Christian : > > Hello Pascal, > > thank you for your interesting results. My point is that : > > 1) if you remove from this list the stations that have already been moved to new sites (PURPLE MOUNTAIN, > > RICHMOND, GOLDSTONE), or probably going to (AREQUIPA), the list would be significatively shorter. > > > 2) I really agree that we look for the best colocations possible when we talk about > - new sites : we have still gaps in the DORIS cover. > - or not working sites : AREQUIPA for instance. > > But for stations that are properly functioning, I maintain that it is not pertinent to move them away. > DORIS needs long-term stability (TOPEX retrievals for instance), and a new monumentation would be > more adequate. With such a policy, we could better concentrate our efforts in improving the global coverage. > > Sincerely, > > Christian Jayles > > > > > ---------- > > De : Pascal Willis[SMTP:Pascal.R.Willis@jpl.nasa.gov] > > Date : vendredi 4 novembre 2005 18:41 > > A : Jayles Christian > > Cc : Herve Fagard; Tavernier Gilles; Coutin-Faye Sophie; ids.governing.board@cls.fr > > Objet : Dyonisos and other long-term observing DORIS stations > > > > Hi Christian, > > > > here are the stations which have more than 480 > > weeks of results (using the last data available), > > sorted by number of available weekly solutions > > (last are the best). The number of weeks is the > > 4th column > > > > EVEB 21501 EVEREST 484 12.28 2.11 3.76 2.16 > > AREA 42202 AREQUIPA 488 10.10 2.56 4.44 2.75 > > PURA 21604 PURPLE MOUNTAIN 504 12.07 2.42 3.93 2.64 > > DIOA 12602 DIONYSOS 533 12.71 1.97 2.91 2.02 > > KITA 12334 KITAB 536 12.71 1.84 2.71 1.71 > > SPIA 10317 NY-ALESUND 537 12.71 1.64 1.34 2.19 > > MANA 22006 MANILLE 539 12.36 2.78 4.91 3.17 > > GOLA 40405 GOLDSTONE 543 11.67 1.96 2.77 1.98 > > SANA 41705 SANTIAGO 544 12.71 2.33 3.13 1.99 > > CACB 41609 CACHOEIRA 547 12.71 3.30 5.64 3.19 > > RIDA 40499 RICHMOND 566 12.04 2.16 3.02 2.04 > > EASA 41703 EASTER ISLAND 577 12.71 2.52 3.45 2.27 > > CIBB 23101 CIBINONG 583 12.71 2.10 2.79 2.16 > > KRUB 97301 KOUROU 583 12.71 2.53 3.36 2.31 > > ADEA 91501 TERRE ADELIE 585 12.71 1.90 2.22 1.44 > > KERA 91201 KERGUELEN 591 12.34 2.51 2.98 2.01 > > META 10503 METSAHOVI 591 12.71 1.72 2.37 1.85 > > SYOB 66006 SYOWA 594 12.40 1.71 1.79 1.50 > > REYA 10202 REYKJAVIK 598 12.71 1.77 2.17 1.81 > > ROTA 66007 ROTHERA 600 12.71 1.75 1.87 1.44 > > DJIA 39901 DJIBOUTI 613 12.71 2.25 3.09 2.50 > > TRIA 30604 TRISTAN DA CUNHA 618 12.71 2.10 2.60 1.99 > > RIOA 41507 RIO GRANDE 626 12.71 1.94 2.51 1.77 > > FAIA 40408 FAIRBANKS 630 12.71 1.61 1.68 1.69 > > YARA 50107 YARRAGADEE 633 12.71 2.07 2.40 1.85 > > REUA 97401 LA REUNION 634 12.71 2.15 2.99 1.92 > > LIBA 32809 LIBREVILLE 639 12.71 1.97 2.91 1.89 > > HBKA 30302 HARTEBEESTHOEK 641 12.71 2.24 2.62 1.65 > > KOKA 40424 KAUAI 645 12.71 2.30 3.93 2.17 > > YELA 40127 YELLOWKNIFE 659 12.71 1.50 1.95 1.55 > > TLHA 10003 TOULOUSE 663 12.71 1.67 2.76 1.61 > > > > Dyonisos is in this list but far from being a critical one > > > > You will see that it is not the only one with a long time history > > > > There is also a discontinuity for Dyonisos and > > several large data gaps (either in data or > > > rejected in the solution) > > > > new station DIO1 starting at 04-APR-1995 > > discontinuity of 21 weeks found: from 15-OCT-1996 > > to 12-MAR-1997 station is DIO1 > > discontinuity of 43 weeks found: from 02-APR-1997 > > to 28-JAN-1998 station is DIO1 > > discontinuity of 38 weeks found: from 09-SEP-2003 > > to 01-JUN-2004 station is DIO1 > > > > Best regards > > Pascal > > > > > Hi Pascal, > > > > > > > > > several stations in your list have gaps in > > >their time series (AREQUIPA, COLOMBO, BADARY, > > > CACHOEIRA, DJIBOUTI, ...). And several of them have already been moved on > > > new sites (PURPLE MOUNTAIN, NOUMEA, GOLDSTONE, GALAPAGOS ...) > > > > > > When I look at Laurent's data, only KOUROU, RICHMOND and ROTHERA totalize > > > more than 120 months. DIONYSOS is fourth on the > > >list, with 120 months and almost no gap. > > > > > > My opinion remains that when a station gives > > >good results wrt disponibility, it is a better > > >policy > > > to renew it than to move it on another site. > > >DORIS needs long-term stability, and > > >operationality. > > > > > > Best regards, > > > > > > Christian > > > > > >> ---------- > > >> De : Pascal Willis[SMTP:Pascal.R.Willis@jpl.nasa.gov] > > >> Date : vendredi 4 novembre 2005 16:20 > > >> A : Jayles Christian > > > > Cc : Herve Fagard; Tavernier Gilles; > > >Coutin-Faye Sophie; Jayles Christian; > > >ids.governing.board@cls.fr > > >> Objet : Re: DIONYSOS > > >> > > >> Bonjour à tous, > > >> > > >> > > >> comme je l'ai déjà dit en Groupe > > >>Mission, on ne peut pas ignorer 10 ans de > > >>mesures DORIS > > >> > > >> faites par Dionysos : les stations à > > >>longues séries temporelles sont rares, > > >>gardons-en quelques-unes SVP. > > >> > > >> > > >> Hi Christian, > > >> > > >> for your information, here are the DORIS > > >>stations that observed more than 10 years: > > >> > > >> acronym domes DORIS station #weeks > > >>data span latitude RMS longitude RMS > > >>vertical RMS > > >> AREA 42202 AREQUIPA 488 10.10 2.56 4.44 2.75 > > >> PAPB 92201 PAPEETE 479 10.12 3.02 2.74 2.03 > > >> GOLA 40405 GOLDSTONE 543 11.67 1.96 2.77 1.98 > > >> COLA 23501 COLOMBO 461 11.79 1.95 2.54 1.75 > > >> BADA 12338 BADARY 442 12.04 2.11 2.68 1.99 > > >> RIDA 40499 RICHMOND 566 12.04 2.16 3.02 2.04 > > >> PURA 21604 PURPLE MOUNTAIN 504 12.07 2.42 3.93 2.64 > > >> EVEB 21501 EVEREST 484 12.28 2.11 3.76 2.16 > > >> KERA 91201 KERGUELEN 591 12.34 2.51 2.98 2.01 > > >> MANA 22006 MANILLE 539 12.36 2.78 4.91 3.17 > > >> SYOB 66006 SYOWA 594 12.40 1.71 1.79 1.50 > > >> GALA 42004 SAN CRISTOBAL 430 12.57 1.88 3.14 1.86 > > >> AMSA 91401 AMSTERDAM 324 12.69 2.47 2.56 1.85 > > >> ADEA 91501 TERRE ADELIE 585 12.71 1.90 2.22 1.44 > > >> CACB 41609 CACHOEIRA 547 12.71 3.30 5.64 3.19 > > >> CIBB 23101 CIBINONG 583 12.71 2.10 2.79 2.16 > > >> DIOA 12602 DIONYSOS 533 12.71 1.97 2.91 2.02 > > >> DJIA 39901 DJIBOUTI 613 12.71 2.25 3.09 2.50 > > >> EASA 41703 EASTER ISLAND 577 12.71 2.52 3.45 2.27 > > >> FAIA 40408 FAIRBANKS 630 12.71 1.61 1.68 1.69 > > >> HBKA 30302 HARTEBEESTHOEK 641 12.71 2.24 2.62 1.65 > > >> HELA 30606 SAINTE-HELENE 455 12.71 2.09 3.13 2.00 > > >> KITA 12334 KITAB 536 12.71 1.84 2.71 1.71 > > >> KOKA 40424 KAUAI 645 12.71 2.30 3.93 2.17 > > >> KRUB 97301 KOUROU 583 12.71 2.53 3.36 2.31 > > >> LIBA 32809 LIBREVILLE 639 12.71 1.97 2.91 1.89 > > >> MARA 30313 MARION ISLAND 467 12.71 2.86 3.48 1.99> > > >> META 10503 METSAHOVI 591 12.71 1.72 2.37 1.85 > > >> MORA 51001 PORT MORESBY 395 12.71 2.88 3.16 2.27 > > >> NOWB 92701 NOUMEA 380 12.71 2.75 3.81 2.75 > > >> REUA 97401 LA REUNION 634 12.71 2.15 2.99 1.92 > > >> REYA 10202 REYKJAVIK 598 12.71 1.77 2.17 1.81 > > >> RIOA 41507 RIO GRANDE 626 12.71 1.94 2.51 1.77 > > >> ROTA 66007 ROTHERA 600 12.71 1.75 1.87 1.44 > > >> SAKA 12329 SAKHALINSK 418 12.71 2.61 2.44 2.06 > > >> SANA 41705 SANTIAGO> 544 12.71 2.33 3.13 1.99 > > >> SPIA 10317 NY-ALESUND 537 12.71 1.64 1.34 2.19 > > >> TLHA 10003 TOULOUSE 663 12.71 1.67 2.76 1.61 > > >> TRIA 30604 TRISTAN DA CUNHA 618 12.71 2.10 2.60 1.99 > > >> YARA 50107 YARRAGADEE 633 12.71 2.07 2.40 1.85 > > >> YELA 40127 YELLOWKNIFE 659 12.71 1.50 1.95 1.55 > > >> > > >> It is not a small number and 1 change is not > > >>going to affect the whole picture. > > >> > > >> Best regards > > >> Pascal > > >> > > >> NB: some of the IDS Governing Board members > > >>may not be too familiar with French > > >> > > >> > > >> comme je l'ai déjà dit en Groupe > > >>Mission, de plus, Dionysos est caractérisé par > > >>un organisme > > >> hôte extrèmement réactif, la moindre > > >>panne est immédiatement réparée et on ne peut > > >>absolument > > >> pas la comparer à une station nouvelle > > >>sur laquelle nous n'aurions aucun recul > > >>opérationnel. > > >> > > >> comme je l'ai déjà dit en Groupe > > >>Mission, nous ne pouvons pas nous permettre > > >>d'oublier tel ou tel critère (séries longues > > >> > > >> et opérationnalité) et de ne regarder > > >>qu'un critère partiel (colocalisation). Pour > > >>apprécier GLOBALEMENT > > > > les avantages et les inconvénients de > > >telle ou telle station, un outil Excel est en > > >cours de mise au > > >> point (GT) et je vous encourage à le > > >>renseigner déjà avec les informations dont on > > >>dispose pour Dionysos. > > >> On pourra alors peut-être comparer objectivement. > > >> > > >> Le réseau DORIS a un atout : sa > > >>stabilité à long terme. En tout état de cause, > > >>si je peux parler au nom du système, la demande > > >>est > > >> "SVP remonumentez Dionysos et installons-y une balise 3.0". > > >> > > >> amicalement, à tous, > > >> > > >> > > >>Christian Jayles > > >> > > >> > > >> > > >> -- > > >> Pascal Willis > > >> Jet Propulsion Laboratory, MS 238-646 Ph : 1-818-393-4748 > > >> 4800 Oak Grove Drive FAX: 1-818-393-4965 > > >> Pasadena CA 91109 Em : Pascal.R.Willis@jpl.nasa.gov > > >> > > > > > > -- > > Pascal Willis > > Jet Propulsion Laboratory, MS 238-646 Ph : 1-818-393-4748 > > 4800 Oak Grove Drive FAX: 1-818-393-4965 > > Pasadena CA 91109 Em : Pascal.R.Willis@jpl.nasa.gov > > > > > >