Call for papers

INTRODUCTION

The GGHS 2024 “Gravity, Geoid and Height Systems 2024” Symposium will be held in Thessaloniki, Greece, from      4 to 6 September 2024. It focuses on methods for observing, estimating and interpreting the Earth’s gravity field and the essential role of gravity field modelling in measuring, understanding and predicting changes in the Earth system.

GGHS 2024 continues the long history of IAG gravity field related symposia, initially hosted by the IAG Commission 2 (Gravity Field):

  • GGG 2000 (Banff, Canada)
  • GG 2002 (Thessaloniki, Greece)
  • GGSM 2004 (Porto, Portugal)
  • GGEO 2008 (Chania, Greece)
  • GGHS 2012 (Venice, Italy)

Those organized by the International Gravity Field Service (IGFS):

  • 1st IGFS Meeting 2006 (Istanbul Turkey)
  • 2nd IGFS Meeting 2010 (Fairbanks, Alaska, USA)
  • 3rd IGFS Meeting 2014 (Shanghai, China).

And more recently the joint IAG Commission 2 and IGFS Symposia:

  • GGH 2016 (Thessaloniki, Greece)
  • GGHS 2018 (Copenhagen, Denmark)
  • GGHS 2022 (Austin, Texas)

On this occasion, GGHS 2024 is co-organized by the IAG’s Global Geodetic Observing System (GGOS).

More information on the conference sessions, venue, and hosting city along with important dates for abstract submission, registration, trip and visa arrangements can be found in the symposium website at http://www.gghs2024.com.

SUBJECTS ‐ THEMES 

During the last decade, geodesy in general and gravity field modelling in particular, have experienced a notable growth in their recognition and end-product use by many scientific disciplines.

This was mainly due to the advent of the dedicated legacy satellite gravity missions of CHAMP, GRACE and GOCE, which have brought new insights to both the static and time-variable representations of the Earth’s gravity field. GRACE Follow-On has seamlessly integrated with the 15-year GRACE data record and has become indispensable for a wide variety of geophysical process and climate studies.  New mission concepts, like NGGM, new accelerometers for satellite gradiometry, cold atom gravimetry, and new and enhanced processing technologies, shall substantially improve this knowledge with further increased spatial and temporal resolution. Moreover, the continuous availability of altimeters on-board satellites and the improvements in the representation of the marine geoid have provided higher accuracies to shorter spatial scales of the marine geoid and gravity field, ocean topography and circulation as well as the structure of the oceanic crust.

At the time came advancements in traditional terrestrial, airborne, UAV and shipborne gravity instrumentation, which offer considerable improvements in gravity networks and the monitoring of gravity variations. Absolute quantum gravimeters have emerged and are gradually replacing free-fall corner cube ones, concepts on quantum sensors are investigated as future payloads for gravity dedicated space missions, while results from gravimeters based on MEMS and airborne sensors on UAVs are emerging.

Another major breakthroughs for the gravity and geoid community have been the definitions of the International Height Reference System (IHRS) as well as the International Terrestrial Gravity Reference System (ITGRS) and the development of their practical realizations, the International Height Reference Frame (IHRF) and the International Terrestrial Gravity Reference Frame (ITGRF). Concepts for gravity, geoid and potential determination have been developed and tested aiming at providing a roadmap for the definition and realization of physical heights and gravity reference into a worldwide frame. Both definitions lead to the linkage of local vertical and gravity datums to a global one, which is fundamental for monitoring sea level variations, as well as engineering and hydrological and cryosphere studies.

The collocated use of the new datasets and models offered by gravity-field related research improves the knowledge of the Earth system, its sub-systems, coupling processes among them, which are important indicators for climate change. They provide the building blocks for innovative investigations of the solid Earth giving new details of crust and mantle and their variation in time.

Contributions on methods for observing, modelling and interpreting the Earth’s gravity field, the determination of the geoid, the establishment of physical height systems, and the essential role of gravity field modelling in measuring, understanding and predicting changes in the Earth system are welcomed for presentation at the GGHS2024 Symposium.

GGHS 2024 SESSIONS

Session 1: Reference systems and frames in Physical Geodesy

Session 2 (Co-organized with the IAG QuGe Proect): Novel technologies in terrestrial, airborne and satellite gravity field determination

Session 3: Static and time-variable global gravity field modelling

Session 4: Regional gravity field modelling and geophysical interpretation

Session 5: Gravity for climate, atmosphere, ocean and natural hazard research

Section 6: Data management, dissemination of results and networking of stakeholders

First Circular (PDF)