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GGOS Topical Meeting on Geohazards

Through the Global Geodetic Observing System (GGOS), the International Association of Geodesy (IAG) provides a common framework to encourage, coordinate and facilitate Earth-monitoring efforts based on geodesy. This framework aims to integrate observations and geodetic outputs from different national and international organisations, while also raising awareness of geodesy and its products. A key strategic objective of GGOS is to facilitate the incubation of new, integrated research topics supported by geodesy that address emerging scientific and societal challenges. To this end, GGOS promotes the establishment of GGOS Focus Areas. These address broader, cross-disciplinary issues, developing new methods, designing integrated data analysis, and identifying potential new geodetic products. Current GGOS Focus Areas include

  • Geohazards Monitoring,
  • Geodetic Space Weather Research (GSWR) and
  • Artificial Intelligence for Geodesy (AI4G).

GGOS Focus Area on Geohazards Monitoring

The Focus Area on Geohazards Monitoring currently focuses on GNSS-enhanced Tsunami Early Warning Systems (GeTEWS), particularly in Oceania, which is one of the most seismically active regions. Developments of this Focus Area have been instrumental in raising the profile of geodesy within important international bodies such as the Pacific Geospatial Surveying Council (PGSC), the GeoRisk Commission of the International Union of Geodesy and Geophysics (IUGG), the IUGG Joint Tsunami Commission, the UN Sendai Framework for Disaster Risk Reduction, and the UN International Committee on GNSS. The outcomes of this Focus Area have also contributed to the Global Assessment Reports on Disaster Risk Reduction (GAR), which are regularly published by the UN Office for Disaster Risk Reduction (UNDRR).

Given the success of the Geohazards Monitoring Focus Area with GeTEWS, GGOS is eager to extend its remit by exploring further ongoing and prospective applications of geodetic techniques and methods for monitoring natural hazards. The goal is to evaluate the feasibility of transforming ongoing and future scientific research outcomes into operational services. GGOS is particularly interested in approaching experts in Synthetic Aperture Radar (SAR) and Interferometric Synthetic Aperture Radar (InSAR) techniques, as well as regional infrastructures for geohazard monitoring based on geodetic methods. While most monitoring activities rely on satellites and space-based sensors, this Topical Meeting should emphasise in-situ measurements and existing terrestrial monitoring sites and networks.

Format

The GGOS Topical Meeting on Geohazards will take place on 2 October 2026 in Gävle, Sweden. The meeting will consist of three 1.5-hour sessions, each beginning with key solicited presentations, followed by a discussion. Both on-site and remote participation will be possible.

TIGER Symposium

The GGOS Topical Meeting on Geohazards is scheduled to take place the day after the IAG Commission 3 Symposium on “Tracking and Investigating Geodynamics and Earth Rotation” (TIGER Symposium, https://geodesy.science/com3/meetings/tiger-symposium-2026/). As this Symposium includes sessions on Cryospheric Deformation, Volcanogeodesy and Seismogeodesy, experts from the International Association of Cryospheric Sciences (IACS), the International Association of Volcanology and Chemistry of the Earth’s Interior (IAVCEI), and the International Association of Seismology and Physics of the Earth’s Interior (IASPEI) will have the opportunity to participate in the GGOS Topical Meeting.

GGOS Days 2026

In the week after the GGOS Topical Meeting, the GGOS Days 2026 will take place at the same venue, see https://geodesy.science/events/ggos-days-2026/. Those attending the GGOS Topical meeting are also welcome to participate in GGOS Days 2026.

Topics

The use of geodetic techniques to monitor natural hazards is well documented in scientific research and public literature. Further improvements are discussed at regular science-driven conferences. The GGOS Topical Meeting focuses on effectively applying research results to early warning programmes. These include the challenges of long-term deployment and operation of observation networks and sensors, data archiving and analysis capabilities, implementation of real-time services and usability of geodetic outputs in emergency response programmes. Key invited speakers will summarise the current challenges in their field of expertise, and discussions in a round-table format will identify areas in which GGOS could contribute towards overcoming these challenges. The meeting will consist of three 1.5-hour sessions, each beginning with key solicited presentations, followed by a discussion. Both on-site and remote participation will be possible.

Dates

  • Pre-registration deadline                        31 July 2026
  • On-site registration confirmation         15 August 2026
  • Schedule and conference program       31 August 2026
  • List of participants                                   15 September 2026
  • GGOS Topical Meeting                             2 October 2026

Registration

All colleagues working on the topics of the meeting or related themes are invited to participate on-site or online. Attendance is free of charge (no registration fee), but pre-registration is required to ensure room capacity and to coordinate the online communication.

By pre-registering, the participants agree that their data will be stored internally in the GGOS records. The data will only be used for meeting-related organisational issues. On-site registration will be confirmed before 15 August. If any pre-registered participant is not able to attend the meeting, they are asked to withdraw their pre-registration as soon as possible (by contacting ). Please note that the free participation is only valid for the GGOS Topical Meeting on Geohazards (2 October 2026).

To attend the entire TIGER Symposium, a registration fee is required (see TIGER event website). GGOS Topical Meeting attendees interested to join the Volcano- and/or Seismogeodesy Sessions of the TIGER Symposium (on 1 October 2026) can register free of charge via the GGOS Topical Meeting.

Register here


Gender *Information on gender is being collected to enable us to understand the demographics of participants. This information will only be visible to the core organising team.
(company / organisation)
Participant Category *Early Carrer Scientist (ECS): highest academic degree earned within the last 10 years, this period can be extended due to career interruptions
Participation Type *
Do you want to attend? *
Consent to Media Recording *The GGOS Topical Meeting is a hybrid event with both in-person and remote attendees. Presentations may be recorded, and a room view may be utilised as part of the live video feed for virtual participants. Please indicate below if you are willing to have your voice and picture recorded.
Consent to Participant Listing *A participant list will be posted on the meeting website. Please indicate below if you give consent for your name and affiliation to be included in the list of participants.
Consent to Conditions *By registering, the participants agree that their data will be stored internally in the conference records. The data will only be used for meeting-related organisational issues.
Consent to Code of Conduct *By registering, the participants agree to follow the code of conduct.

Travel

Venue

The GGOS Topical Meeting on Geohazards will be hosted by Lantmäteriet, the Swedish Mapping, Cadastral and Land Registration Authority (https://www.lantmateriet.se/en/), located in:

Lantmäterigatan 2C, 802 64 Gävle, Sweden

Gävle (Sweden) is located about 150 km to the north of Stockholm. More information about the city can be found at https://www.visitgavle.se/en.

Arrival

By air : The closest airport is Stockholm Arlanda Airport (airport code ARN), which has daily connections to many European and worldwide destinations through scheduled services of a large number of international airlines. It is the largest airport in Sweden. The airport has frequent train connections to Gävle via the station Arlanda C, which is located between the terminals 5 and 4.

By train: Gävle’s railway station is located very close to the city centre. Timetables and tickets are supplied by SJ, https://www.sj.se/en.

By car: Those wishing to drive to Gävle need to enter the Scandinavian peninsula taking either a ferry to Gothenburg, Stockholm or Trelleborg, or using the Øresund Bridge, the connection between Denmark (Copenhagen) and Sweden (Malmö).

Accommodation

Information about hotel reservation will be provided to onsite participants later.

Visa

Sweden is a member of the European Union; therefore, no visa is needed for E.U. citizens. Non ‐ E.U. participants should contact their nearest Swedish Embassy or Consulate for further information. For a complete list of countries who do need to apply for a visa, check https://www.government.se/government-policy/migration-and-asylum/list-of-foreign-citizens-who-require-visa-for-entry-into-sweden/. If you do need a visa, please visit https://www.government.se/government-policy/migration-and-asylum/information-on-visas/ to find more details. Those who require a formal invitation for the purpose of obtaining a visa, or raising travel funds in their country, may contact the organisation team  . Only those participants who have confirmed their contribution to the GGOS Topical Meeting will receive a formal invitation letter. Travel and medical insurance, if required, are the sole responsibility of the participant.

Contact

GGOS Coordinating Office, contact form

Coordination team

  • Laura Sánchez, President of GGOS, Technische Universität München, Deutsches Geodätisches Forschungsinstitut (DGFI-TUM), Germany
  • Rebekka Steffen, President IAG Commission 3 “Earth Rotation and Geodynamics”, Lantmäteriet, Sweden
  • Constanza Santori, Early Career Scientist Representative, Universidad de Chile, Chile
  • Holger Steffen, EPOS TCS GNSS Executive Board Chair, Lantmäteriet, Sweden
  • Faramarz Nilfouroushan, Senior lecturer, University of Gävle, Sweden
  • Martin Sehnal, Director of the GGOS Coordinating Office, BEV – Federal Office of Metrology and Surveying, Austria

Code of Conduct

GGOS follows the Code of Conduct of the International Union of Geodesy and Geophysics (IUGG) and their anti-harassment guidelines. These code and guidelines apply for all GGOS meeting. GGOS opposes any discrimination or harassment based on such factors as age, citizenship, disability, ethnic origin, gender identity, language, political or other opinion, religion, or sexual orientation. We will follow IUGG’s Anti-Harassment Guidelines to prevent any form of harassment or discrimination, and to ensure an inclusive atmosphere that encourages the free expression and exchange of scientific ideas and results.

All attendees of GGOS meetings have a role to play in creating an inviting and harassment-free environment through their own behaviour and by discouraging harassment and discrimination by others.

Expected Behaviour

  • All attendees are treated with respect and consideration, valuing a diversity of views and opinions.
  • The meeting creates an environment to allow for the professional exchange of information.
  • Be considerate, respectful and collaborative. Communicate openly with respect for others, critiquing ideas rather than individuals.
  • Avoid personal attacks directed toward other attendees, the local organisers or guests. Be mindful of your surroundings and of your fellow participants.
  • Alert the local organisers if you notice a dangerous situation or someone in distress.

Unacceptable Behaviour

  • Discrimination, harassment or intimidation is unacceptable and will not be tolerated. The local organisers may take any action necessary and deemed appropriate (see below) if attendees engage in unacceptable behaviour including removal from the meeting without warning or refund.
  • Recording or taking photography of another individual’s presentation without the explicit permission of the authors is not allowed.
  • Disruption of talks at oral or poster sessions, any receptions, or satellite events within the meeting in other venues.

Reporting Unacceptable Behaviour

  • If you are the subject to unacceptable behaviour or may have witnessed such behaviour that violates professional and respectful participant conduct, please immediately notify the chairperson of the session if the incident has occurred during the meeting or local organisers.
  • Notification can be done by contacting a local organiser on-site (e.g. at the registration desk) or you can e-mail your concern by contact form.
  • All reports will remain confidential.

Actions to prevent unacceptable behaviour

  • If a clear case of verbal discrimination, harassment or intimidation during a scientific session is established to have occurred, the Chairperson should act immediately to stop it. If the situation deteriorates, the Chairperson should ask the offender to leave the room.
  • If any form of harassment occurs in a less openly visible way (e.g. during social activities or informal gatherings), the affected person and/or witness(es) should immediately report it to one of the organisers. The affected person has the option to pursue a formal procedure.
  • In cases described above, the organiser should prepare written notes of the incident, attaching any evidence and identifying any witnesses. The organiser should then give the alleged offender the opportunity to be heard and to respond to the allegation.
  • A full report of the incident should then be sent to the organisers via contact form
  • , who will promptly report to the IAG and IUGG Officers any case of harassment that occurred during an IAG or IUGG-supported meeting.
  • Harassment incidents or behaviour that occur outside IAG or IUGG activities referred to above will be considered only when a formal investigation of the case has been conducted by the relevant authority (e.g. the institution, to which the individual is affiliated) and made known to the IAG and IUGG Executive Committees. In those cases that involve an IUGG or Association officer, the Executive Committee may decide to take disciplinary actions against that person.

IAG as part of the IUGG

  
The International Association of Geodesy (IAG)  is a constituent association of the International Union of Geodesy and Geophysics (IUGG).

IAG Related Organisations

IAG collaborates closely with numerous organizations within geodesy and beyond. See the list for details.

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