The project to advance the ISC-GEM catalogue is led by Domenico Di Giacomo and Dmitry Storchak (ISC, UK) with scientific support from Bob Engdahl (University of Colorado Boulder, USA); several IT, admin and technical staff at the ISC are also working on the project.

The project to extend the ISC-GEM Catalogue was led by Dmitry Storchak and Domenico Di Giacomo (ISC, UK), with scientific support from Bob Engdahl (University of Colorado Boulder, USA) for the two-tier relocation procedure. Further IT, admin and technical staff at the ISC have been engaged in the project.

The project was led by Dmitry Storchak with scientific input from Willie Lee. The work on this project was performed by the Team of International Experts:

• Domenico Di Giacomo, István Bondár, James Harris and Dmitry Storchak (ISC, UK),
• Bob Engdahl (University of Colorado, USA),
• Antonio Villase?or (IES Jaume Almera, Spain),
• Peter Bormann (GFZ, emeritus, Germany),
• Willie Lee (USGS, emeritus, US),
• Graziano Ferrari (INGV/SISMOS, Italy).

The Team of IASPEI observers was led by Peter Suhadolc (Univ. of Trieste, Italy) and included:

• G?ran Ekstr?m (GCMT Project, Columbia University, US),
• Roger Musson (BGS, UK),
• Johannes Schweitzer (NORSAR, Norway),
• Nobuo Hamada (JMA, emeritus, Japan).

A large number of institutions/individuals as well as IT, admin and technical staff at the ISC contributed to the project.