@prefix dcat: . @prefix dct: . @prefix foaf: . @prefix xsd: . a dcat:Dataset ; dct:description """The International VLBI Service for Geodesy and Astrometry (IVS) continued to fulfill its role as a service within the IAU by providing necessary products for the densification and maintenance of the celestial reference frame as well as for the monitoring of Earth orientation parameters (EOP). Here we report on highlights of the service work during the report period focusing on governance, products, and special campaigns/programs. Governance: In 2013, Dr. Axel Nothnagel (University of Bonn) was elected as new IVS Chair succeeding Dr. Harald Schuh (GFZ Potsdam). Dr. John Gipson succeeded Dr. Nothnagel as IVS Analysis Coordinator. Dr. Dirk Behrend (NVI Inc., NASA GSFC) continued to serve as Director of IVS Coordinating Center. There were three active committees: Observing Program Committee (chaired by D. Behrend), VGOS Technical Committee (chaired by B. Petrachenko), and Committee on Training and Education (chaired by R. Haas). A new Working Group on Satellite Observations with VLBI (WG7) was established (chaired by R. Haas). A Working Group on Galactic Aberration (to be chaired by D. MacMillan) was proposed. Observing program: The IVS continued the observation of 24-hour, rapid turnaround sessions (IVS-R1 and IVS-R4), which were run two times per week, for a total of 104 sessions per year. These sessions provided the full set of EOP parameters (i.e., polar motion, UT1-UTC, and nutation). Daily 1-hour Intensive measurements were made for the operational estimation and dissemination of UT1-UTC values. A Continuous VLBI Campaign (CONT14) was observed 6?20 March 2014. The campaign included 17 VLBI radio telescopes at 16 sites recording observations at a data rate of 512 Mbit/s. All data were correlated at the Bonn Correlator within two months. About half of the raw VLBI data were electronically transferred. The resulting data set is the best that the legacy S/X VLBI system has produced to date. Gaia: The IVS initiated an observing program for 195 radio sources (identified by Bordeaux Observatory) as possible transfer sources between the ICRF2 (radio frame) and Gaia (optical frame). The dedicated program commenced in mid-2013 with an accuracy target for the source positions of 0.1 mas and a monitoring target of 12 sessions per year. The targets were achieved for most sources; however, weaker sources need special attention. The program will be continued for a few more years. VGOS: The development of the next generation VLBI system (VLBI Global Observing System, VGOS) was continued. Implementation plans for the broadband system were established with the VGOS Observing Plan and the VGOS Data Transmission and Correlation Plan. A VGOS Analysis Plan is being worked on. It is anticipated that by the year 2017 sixteen VGOS stations will become operational. Presented at the XXIX IAU General Assembly in Honolulu, Hawaii, USA, Commission 19 (C19) - Rotation of the Earth.""" ; dct:identifier "d19a50f1-c96b-4afd-bd9b-dc508576f649" ; dct:issued "2025-10-16T09:42:18.194012"^^xsd:dateTime ; dct:language "eng" ; dct:modified "2025-10-16T09:42:18.194020"^^xsd:dateTime ; dct:publisher ; dct:spatial [ a dct:Location ] ; dct:title "Report of the IVS Activity Highlights 2012 - 2015" ; dcat:distribution , , ; dcat:keyword "Earth Sciences", "Published_External" . a dcat:Distribution ; dct:description "Link to Conference Proceedings" ; dct:format "HTML" ; dct:issued "2025-10-16T09:42:18.196550"^^xsd:dateTime ; dct:modified "2025-10-16T09:42:18.189385"^^xsd:dateTime ; dct:title "Link to Conference Proceedings" ; dcat:accessURL . a dcat:Distribution ; dct:description "Link to conference abstract pages 65-66" ; dct:format "PDF" ; dct:issued "2025-10-16T09:42:18.196555"^^xsd:dateTime ; dct:modified "2025-10-16T09:42:18.189589"^^xsd:dateTime ; dct:title "Link to conference abstract pages 65-66" ; dcat:accessURL . a dcat:Distribution ; dct:format "HTML" ; dct:issued "2025-10-16T09:42:18.196557"^^xsd:dateTime ; dct:modified "2025-10-16T09:42:18.189776"^^xsd:dateTime ; dct:title "Unnamed resource" ; dcat:accessURL . a foaf:Agent ; foaf:mbox "clientservices@ga.gov.au" ; foaf:name "Geoscience Australia Data" .