************************************************************************ IERS Message No. 94 September 5, 2006 ************************************************************************ Information on the updates to the IERS Conventions The IERS Conventions Center provides the following information on the updates to the IERS Conventions. Chapter 7 "Displacement of reference points" of the IERS Conventions has been updated on 1 September 2006, see http://tai.bipm.org/iers/convupdt/convupdt_c7.html . The main update is the introduction of the section 7.1.5 "Ocean Pole Tide Loading" which completes the introduction of the ocean pole tide model after the inclusion of the geopotential part in Chapter 6. The files needed to implement the new model "Ocean Pole Tide Loading" are made available in ftp://tai.bipm.org/iers/convupdt/chapter7/ . An accompanying change is the specification of the IERS conventional mean pole as a linear model in section 7.1.4 equ 23. In the previous wording, this linear model was proposed along with another choice leaving the user to choose between the two. Other modifications are at and around equ 24, to correct for a typo and to account for the anelastic contributions to the pole tide. Finally the subroutine dehanttideinel.f has been updated for leap seconds and commented. See the IERS Message No. 87, March 16, 2006, for more information on the Conventions web site. Gerard Petit and Brian Luzum IERS Conventions Center ************************************************************************ IERS Messages are edited and distributed by the IERS Central Bureau. To subscribe or unsubscribe, please write to . Archives: http://www.iers.org/iers/publications/messages/ ************************************************************************