10.5880/GFZ.1.1.2015.002 International VLBI Service for Geodesy and Astrometry (IVS) Nothnagel, Axel Institut für Geodäsie und Geoinformation, Universität Bonn, Germany Alef, Walter Amagai, Jun Andersen, Per Helge Anderson, James Andreeva, Tatiana Artz, Thomas Bachmann, Sabine BKG Frankfurt/ Main Referat G 1 Grundsatz, Kombination Raumverfahren Balidakis, Kyriakos Barache, Christophe Baudry, Alain Bauernfeind, Erhard Baver, Karen Beaudoin, Christopher Behrend, Dirk Bellanger, Antoine Berdnikov, Anton Bergman, Per Bernhart, Simone Bertarini, Alessandra Bianco, Giuseppe Bielmaier, Ewald Boboltz, David Böhm, Johannes Böhm, Sigrid Boer, Armin Bolotin, Sergei Bougeard, Mireille Bourda, Geraldine Brazeau, Sylvain Buttaccio, Salvo Cannizzaro, Letizia Cappallo, Roger Carlson, Brent Carter, Merri Sue Charlot, Patrick Chen, Chenyu Chen, Maozheng Cho, Jungho Clark, Thomas Collioud, Arnaud Colomer, Francisco Colucci, Giuseppe Combrinck, Ludwig Conway, John Corey, Brian Curtis, Ronald Daniels, Mike Dassing, Reiner Davis, Maria de-Vicente, Pablo De Witt, Aletha Diakov, Alexey Dickey, John Dieck, Christopher Diegel, Irv Doi, Koichiro Drewes, Hermann Dube, Maurice Elgered, Gunnar Engelhardt, Gerald Evangelista, Mark Fan, Qingyuan Farley, Stephen Fedotov, Leonid Fey, Alan Figueroa, Ricardo Fukuzaki, Yoshihiro Gambis, Daniel Garcia-Espada, Susana Gaume, Ralph Geiger, Nicole Gipson, John Glaser, Susanne Gomez, Frank Gomez-Gonzalez, Jesus Gordon, David Govind, Ramesh Gubanov, Vadim Gulyaev, Sergei Haas, Ruediger Hall, David Halsig, Sebastian Hammargren, Roger Hase, Hayo Heinkelmann, Robert GFZ German Research Centre for Geosciences, Potsdam, Germany Helldner, Leif Herrera, Cristian Himwich, Ed Hobiger, Thomas Holst, Christoph Hong, Xiaoyu Honma, Mareki Huang, Xinyong Hugentobler, Urs Ichikawa, Ryuichi Iddink, Andreas Ihde, Johannes Ilijin, Gennadiy Inniss, Roxanne Ipatov, Alexander Ipatova, Irina Ishihara, Misao Ivanov, D. V. Jacobs, Chris Jike, Takaaki Johansson, Karl-Ake Johnson, Heidi Johnston, Kenneth Ju, Hyunhee Karasawa, Masao Karbon, Maria Kaufmann, Pierre Kawabata, Ryoji Kawaguchi, Noriyuki Kawai, Eiji Kaydanovsky, Michael Kharinov, Mikhail Kobayashi, Hideyuki Kokado, Kensuke Kondo, Tetsuro Korkin, Edward Koyama, Yasuhiro Krasna, Hana Kronschnabl, Gerhard Kurdubov, Sergey Kurihara, Shinobu Kuroda, Jiro Kwak, Younghee La Porta, Laura Labelle, Ruth LaFrance, Jacques Lamb, Doug Lambert, Sébastien Langkaas, Line Lanotte, Roberto Lavrov, Alexey Le Bail, Karine Leek, Judith Li, Bing Li, Huihua Li, Jinling Li, Liu Liang, Shiguang Lindqvist, Michael Liu, Xiang Loesler, Michael Long, Jim Lonsdale, Colin Lovell, Jim Lowe, Stephen Lucena, Antonio Luzum, Brian Ma, Chopo Ma, Jun Maccaferri, Giuseppe Machida, Morito MacMillan, Dan Madzak, Matthias Malkin, Zinovy Manabe, Seiji Mantovani, Franco Mardyshkin, Vyacheslav Marshalov, Dmitry Mathiassen, Geir Matsuzaka, Shigeru McCarthy, Dennis Melnikov, Alexey Messerschmitt, Linda Mikhailov, Andrey Miller, Natalia Mitchell, Donald Mora-Diaz, Julian Andres Mueskens, Arno Mukai, Yasuko Nanni, Mauro Natusch, Tim Negusini, Monia Neidhardt, Alexander Nickola, Marisa Nicolson, George Niell, Arthur Nikitin, Pavel Nilsson, Tobias Ning, Tong Nishikawa, Takashi Noll, Carey Nozawa, Kentarou Ogaja, Clement Oh, Hongjong Olofsson, Hans Opseth, Per Erik Orfei, Sandro Pacione, Rosa Pazamickas, Katherine Pedreros, Felipe Petrachenko, William Pettersson, Lars Pino, Pedro Plank, Lucia Ploetz, Christian Poirier, Michael Popelar, Joseph Poutanen, Markku Qian, Zhihan Quick, Jonathan Rahimov, Ismail Redmond, Jay Reid, Brett Reynolds, John Richter, Bernd Rioja, Maria Romero-Wolf, Andres Ruszczyk, Chester Salnikov, Alexander Sarti, Pierguido Schatz, Raimund Scherneck, Hans-Georg Schiavone, Francesco Schmid, Ralf Schreiber, Ulrich Schuh, Harald Schwarz, Walter Sciarretta, Cecilia Searle, Anthony Sekido, Mamoru Seitz, Manuela Shabala, Stanislav Shao, Minghui Shibuya, Kazuo Shu, Fengchun Sieber, Moritz Skjaeveland, Asmund Skurikhina, Elena Smolentsev, Sergey Smythe, Dan Soja, Benedikt Sombra, Adeildo Sousa, Don Sovers, Ojars Spitzak, John Stanford, Laura Stanghellini, Carlo Steppe, Alan Strand, Rich Sun, Jing Surkis, Igor Takashima, Kazuhiro Takefuji, Kazuhiro Takiguchi, Hiroshi Tamura, Yoshiaki Tanabe, Tadashi Tanir, Emine Tao, An Tateyama, Claudio Teke, Kamil Thomas, Cynthia Thorandt, Volkmar Thornton, Bruce Tierno Ros, Claudia Titov, Oleg Titus, Mike Tomasi, Paolo Tornatore, Vincenza Trigilio, Corrado Trofimov, Dmitriy Tsutsumi, Masanori Tuccari, Gino Tzioumis, Tasso Ujihara, Hideki Ullrich, Dieter Uunila, Minttu Veillette, Daniel Venturi, Tiziana Vespe, Francesco Vityazev, Veniamin Volvach, Alexandr Vytnov, Alexander Wang, Guangli Wang, Jinqing Wang, Lingling Wang, Na Wang, Shiqiang Wei, Wenren Weston, Stuart Whitney, Alan Wojdziak, Reiner Yatskiv, Yaroslav Yang, Wenjun Ye, Shuhua Yi, Sangoh Yusup, Aili Zapata, Octavio Zeitlhoefler, Reinhard Zhang, Hua Zhang, Ming Zhang, Xiuzhong Zhao, Rongbing Zheng, Weimin Zhou, Ruixian Zubko, Nataliya International VLBI Service for Geodesy and Astrometry, GFZ Data Services 2015 Very Long Baseline Interferometry VLBI International VLBI Service for Geodesy and Astrometry IVS International Terrestrial Reference Frame ITRF2014 Earth Orientation Parameters EOP precession nutations Earth rotation dUT1 length of day LOD polar motion IVS-SINEX-ITRF2014 EARTH SCIENCE > SOLID EARTH > GEODETICS EARTH SCIENCE > SOLID EARTH > GEODETICS > COORDINATE REFERENCE SYSTEM > GLOBAL COORDINATE REFERENCE SYSTEM Nothnagel, Axel Institut für Geodäsie und Geoinformation, Universität Bonn, Germany Nothnagel, Axel Institut für Geodäsie und Geoinformation, Universität Bonn, Germany Bachmann, Sabine BKG Frankfurt/ Main Referat G 1 Grundsatz, Kombination Raumverfahren Heinkelmann, Robert GFZ German Research Centre for Geosciences, Potsdam, Germany Heinkelmann, Robert GFZ German Research Centre for Geosciences, Potsdam, Germany Thaller, Daniela BKG Frankfurt/ Main Referat G 1 Grundsatz, Kombination Raumverfahren IVS Deutsches GeoForschungsZentrum GFZ Ulbricht, Damian 0000-0002-6298-758X GFZ German Research Centre for Geosciences, Potsdam, Germany Elger, Kirsten 0000-0001-5140-8602 GFZ German Research Centre for Geosciences, Potsdam, Germany Heinkelmann, Robert GFZ German Research Centre for Geosciences, Potsdam, Germany Dataset 10.1007/s00190-009-0357-7 10.1016/j.jog.2012.07.007 10.2481/dsj.WDS-011 http://www.iers.org/IERS/EN/Organization/AnalysisCoordinator/SinexFormat/sinex.html http://www.iers.org/IERS/EN/Publications/TechnicalNotes/tn36.html 10.1007/1345_2015_136 https://www.iau.org/static/resolutions/IAU2006_Resol1.pdf CC BY 4.0 Very Long Baseline Interferometry (VLBI) is a primary space-geodetic technique for determining precise coordinates on the Earth, for monitoring the variable Earth rotation and orientation with highest precision, and for deriving many other parameters of the Earth system. The International VLBI Service for Geodesy and Astrometry (IVS, http://ivscc.gsfc.nasa.gov/) is a service of the International Association of Geodesy (IAG) and the International Astronomical Union (IAU).

The datasets published here are the results of individual Very Long Baseline Interferometry (VLBI) sessions in the form of normal equations in SINEX 2.0 format (http://www.iers.org/IERS/EN/Organization/AnalysisCoordinator/SinexFormat/sinex.html, the SINEX 2.0 description is attached as pdf) provided by IVS as the input for the next release of the International Terrestrial Reference System (ITRF): ITRF2014. This is a new version of the ITRF2008 release (Böckmann et al., 2009).

For each session/ file, the normal equation systems contain elements for the coordinate components of all stations having participated in the respective session as well as for the Earth orientation parameters (x-pole, y-pole, UT1 and its time derivatives plus offset to the IAU2006 precession-nutation components dX, dY (https://www.iau.org/static/resolutions/IAU2006_Resol1.pdf). The terrestrial part is free of datum. The data sets are the result of a weighted combination of the input of several IVS Analysis Centers.

The IVS contribution for ITRF2014 is described in Bachmann et al (2015), Schuh and Behrend (2012) provide a general overview on the VLBI method, details on the internal data handling can be found at Behrend (2013).
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