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 JAA03952 for ; Mon, 13 Jun 2005 09:42:45 +0200 Received: by hector.cls.fr (Postfix) id 47FBBE4AA1; Mon, 13 Jun 2005 07:42:45 +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 C0DCA145BBC for ; Mon, 13 Jun 2005 07:42:44 +0000 (GMT) Received: from smtp1.ign.fr (smtp1.ign.fr [192.134.141.226]) by rly19e.srv.mailcontrol.com (MailControl) with ESMTP id j5D7gdc5000544 for ; Mon, 13 Jun 2005 08:42:40 +0100 Received: from [172.16.0.131] (rama.ign.fr [172.16.0.131]) by smtp1.ign.fr (8.12.10/8.12.10) with ESMTP id j5D7gXYB030062 for ; Mon, 13 Jun 2005 09:42:33 +0200 Mime-Version: 1.0 X-Sender: herfag@pop.ign.fr Message-Id: In-Reply-To: References: Date: Mon, 13 Jun 2005 09:42:18 +0200 To: ids.analysis.forum@cls.fr From: "H.Fagard" Subject: Re: [ids.analysis.forum] Manilla station (MANB) / Tsunami Dec 26, 2004 ? Content-Type: text/plain; charset="iso-8859-1" ; format="flowed" Content-Transfer-Encoding: 8bit X-Mailcontrol-Inbound: 4wnd!s!p9LR4o+QFvM6fko6PYHaLGMlP X-Spam-Score: -4.2 X-Scanned-By: MailControl A-05-01-01 (www.mailcontrol.com) X-Validation-by: laurent.soudarin@cls.fr Dear colleagues, At 7:58 -0700 7/06/05, Pascal Willis wrote: >there is significant discontinuity in the latitude determination >(+6cm) that could be explained either due the effect on the large >Earthquake related to the Tsunami of December 26, 2004 or to some >antenna centering or stability issue of the MANB DORIS antenna >following construction work on the roof in October 2004. From the facts related and pictures provided by the host agency regarding the construction work on the roof, it seems that the northernmost of the three feet of the antenna's supporting tower may have gone down by a few mm, which would result in a few cm antenna shift towards north. This antenna displacement will be confirmed at the end of June when an IGN surveyor travels to Manila in order to measure the antenna excentricity and fasten the tower's loose foot. Best regards, Hervé Fagard -- ====================================================================== Herve FAGARD e-mail : herve.fagard@ign.fr Institut Geographique National 94165 SAINT-MANDE CEDEX PHONE : + 33 1 43 98 81 48 FRANCE FAX : + 33 1 43 98 84 50 ======================================================================