****************************************************************************** dorismail 27-Mar-2013 14:32:51 Message No 0869 ****************************************************************************** Author: Zuheir Altamimi Subject: ITRF2013 Call for Participation Dear Colleagues, Please be informed that the ITRF2013 Call for Participation is now released and could be retrieved at the ITRF web site, using the following link: http://itrf.ign.fr/ITRF_solutions/2013/CFP-ITRF2013-27-03-2013.pdf In addition to the solicited global solutions from the four space geodesy techniques (to be provided by the Technique Services), we also solicit and encourage the owners of co-location sites to consider conducting new local tie surveys using the most up to date survey methods. Indeed, the local ties available at the ITRS Center for a certain number of co-location sites are now old by 10 to 20 years. In this respect, we would greatly appreciate the contribution of the national mapping and space agencies investing and operating co-location sites, which constitute the main foundation of the ITRF. More details regarding the local tie survey are available in the ITRF2013 CfP. Cordially Zuheir Altamimi ------------------------------------------------------------------- Zuheir Altamimi Head, IERS ITRS Center Institut National de l'Information Géographique et Forestière (IGN) Université Paris Diderot UFR STEP / IPGP / LAREG Bâtiment Lamarck A 35 rue Hélène Brion Case 7071 75205 Paris Cedex 13 Tel +33 (0) 1 57 27 53 28 email: zuheir.altamimi@ign.fr ------------------------------------------------------------------- Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr