Centre for Geophysical Forecasting



01 March - First spin-off company from CGF, Sensnet Analytics

On the 26th of January, the company Sensnet Analytics was established. This is the first spin-off company from CGF, and it will focus on services and innovation of using DAS for monitoring and surveillance along infrastructure. The goal is to provide the customers with data and tools to reduce cost of operation, prevent sabotage and hazards, improve maintenance of infrastructure, as well as to contribute to prevention of injuries to humans and animals. The kick-off of the process to form the basis of the company was started in September 2022 by employing Jan Langhammer in a temporary position at CGF with the goal of creating focused activities to establish the company. A licensing agreement with NTNU-TTO as facilitator will be granted to Sensnet Analytics in using the knowhow and developed software within CGF in the coming projects. The last couple of years testing along powerlines has proven that the concept is providing useful insight of the electrical grid. The projects conducted to date at CGF have provided data which are of high interest for powerline companies and will contribute to optimised management and operation of the electrical grid. Although powerline companies in Norway are first to support the spin-off company, there will still be focus on other infrastructure, such as railway networks, urban monitoring, offshore energy transmission infrastructure, environmental monitoring and geohazards. The forming of the company is part of CGF's goal to contribute to industrial activities outside of academia. Jan Langhammer is employed as General Manager and will lead the operation of the company. Chairman of the Board is Ståle Emil Johansen. Main office will be in Ålesund, including presence in Trondheim and Oslo. 


01 February - Visting Professor Nina Mahmoudian

We were fortunate be able to welcome Assoc. Prof. Nina Mahmoudian to CGF and to learn about her group's research in Purdue University at a CGF seminar on Thursday.  Nina made a flying visit to Trondheim to catch up with colleagues here who are interested in similar research topics.  Nina's goal is to advance maritime autonomous systems capabilities to persistently observe environmental conditions and detect early warning indicators to maintain integrity of oceans and coastal areas. Nina has worked for many years on maritime vehicle autonomy and her interests clearly overlap those at CGF and other centres at NTNU, including AURLab, where we also had very interesting discussions with Martin Ludvigsen.  Nina is currently visiting Joao Sousa in Portugal on a Fulbright scholarship.

23.09.18 – PhD Defence 

CGF are delighted to announce that two of our talented PhD. students are students no more!  

On the 18th September Robin Andre Rørstadbotnen defended his thesis entitled "Acoustic and Elastic wave Exploration and Monitoring using Dense Passive Arrays" and the next day Kittinat Taweesintananon defended his thesis "Distributed acoustic sensing and 4D seismic time-strain inversion for subsurface monitoring".  We now have two newly-minted Doctors of Philosophy and we heartily congratulate both on their hard work and crowning educational achievement.  We look forward to working with them as their careers grow in the future.
Robin has accepted a post doc position at CGF, where we welcome his continued contributions.

Kit is moving back to Bangkok, Thailand to work as a geophysicist in the Subsurface Technical Solutions Division of PTT Exploration and Production Plc. (PTTEP).




CGF are delighted to celebrate Prof. Lasse Amundsen, a CGF board member, Adjunct Professor at NTNU and senior leader at Equinor, being presented with the Reginald Fessenden Award by the SEG at their meeting in Houston, Texas on 29th August for his extensive contributions to exploration geophysics over many years.  Lasse Amundsen is well known for his work in seabed seismic acquisition and in a variety of areas in seismic and electromagnetic data processing and analysis.  He coauthored SEG's Introduction to Petroleum Seismology, second edition in 2018.  In addition, he coauthored, along with our Director, Martin Landrø, Bivrost's Introduction to Exploration Geophysics in 2018 and From Arrhenius to CO2 Storage in 2023.


Robin Rørstadbotnen, one of our talented PhD students, was recently invited by EAGE to record an E-Lecture for its educational portal, Learning Geoscience.  The invitation recognises Robin as a distinguished lecturer following his presentation at the EAGE Annual 2022 in Madrid, where his paper 'Analysis of a Local Earthquake in the Arctic Using a 120 KM Long Fibre-Optic Cable´ was presented. It was rated as one of the best rated talks at the event and was selected by the EAGE Education Committee.  Robin's e-Lecture can be accessed at Analysis of a Local Earthquake in the Arctic using a 120 km long Fibre-Optic Cable (


Professor Philip Ringrose (CGF WP leader on CO2 and gas/energy storage) has won the SINTEF and NTNU CCS Award 2023. He received the award during the conference dinner at the 12th Trondheim CCS Conference (TCCS-12). 

Building on a solid scientific background as a geoscientist, Philip has specialised in applying his knowledge of the subsurface to CO2 storage, and has worked directly on several large-scale storage projects, such as Sleipner, Snøhvit and In Salah. He currently works as a specialist in geoscience at Equinor and an adjunct professor of CO2 storage at NTNU.  On receiving the award, Philip declared “I’m really honoured, it’s really humbling to receive such a reward, thank you very much, it is a team effort and I’m really proud to be part of this huge team.”  He chairs the Scientific Committee in the Norwegian CCS Research Centre (NCCS), and has been influential in establishing the CO2 DataShare project, which is an open digital portal for sharing data from international CCS projects.

TCCS is a non-profit, leading scientific conference that focuses on the research and development of CCS. Its objective is to advance, present and discuss the latest work in the field undertaken by R&D institutions, universities and industry. TCCS takes place every other year in Trondheim, Norway.


It is wonderful to see one of our papers in Geophysics is currently the top-featured publication for May/June 2023 on the SEG library webpage.  The paper is on DAS sensing of storms and other low-frequency features, with lead author Kittinat Taweesintananon.



John Potter delivered a keynote presentation at the Oceanoise 2023 conference in Vilanova i la Geltrú, Spain on the potential for DAS to monitor whales and ships.  John subsequently participated in the conference closing discussion panel, which decided to draft an urgent call to governments and operators worldwide to address the growing problem of noise in the ocean.  This call to action was released on 8th June, World Ocean Day.


One of our talented PhD students, Kristina Shizuka Yamase Skarvang, was recently awarded ´Best Poster Presentation´ for her paper entitled "Comparing Sensitivity of State of Polarization Monitoring and Distributed Acoustic Sensing in the Svalbard Arctic Submarine Communication Cable" at the SubOptic 2023 conference in Bangkok.  SubOptic is a triennial event for the submarine cable industry and this year was focussed on ´Collaborating on our Critical Infrastructure´.  

23.03.20 - CGF supervised student wins Best Masters' Thesis award

The winner of the best Masters' thesis in Electronic Systems at NTNU for 2022 was Martin Ericsson with the thesis "Fish-farm Integrated Sensor Cluster: Environmental and Biological Surveillance in Fish-farming Aquaculture with Emphasis on Sensor Fusion". While Martin is not part of CGF, he was supervised by John Potter and the technological focus is of considerable interest, fusing optical and acoustic sensing with AI interpretation.  His award has been written up (in Norwegian) in the elektronikknett magazine.

23.03.10 - GeoExPro article on global data sharing

An article in GeoExPro on global data sharing has been published, featuring Phil Ringrose, our WP leader on CO2 storage.  The article  announces the CO2 DataShare online portal, an initiative by the international CO2 Storage Data Consortium, with the goal to make available curated and well-documented datasets from CO2 storage projects. So far, the portal has seen 28,000 downloads from a wealth of different countries.  This is an important development in CO2 storage capability development and sharing and CGF is pleased to see this portal become available.

23.03.06 - Introducing recent arrivals at CGF!

Tobias has an M.Tech in Computer Science from NTNU that focuses on HPC and optimising linear solvers connected to Newton-Raphson iterations of nonlinear systems using heterogeneous computing. His thesis was a collaboration between the CGF and the HPC-Lab to enhance today's cutting-edge CO2 storage simulation software. For his PhD, he will continue this work by combing different simulation software in a framework and investigate in which scenarios advanced physics modelling is advantageous as opposed to simplified analytical solutions. Tobias will be part of WP5. 


Maren completed a M.Tech in Computer Science from NTNU with a specialisation in algorithms and HPC. Her Master's thesis was a collaboration between the CGF and the HPC-Lab at NTNU, where she analysed mixed-precision and GPU matrix accelerators for high-order FEM for seismic wave propagation. As part of WP5, Maren’s PhD research will concentrate on tools and techniques to facilitate the performance engineering of FWI codes on emerging computer architectures, primarily focusing on optimisations targeting data movement and especially looking at FWI for seismic imaging.

Claudi comes to us from the Center of Mathematical Research at the Autonomous
University of Barcelona, where he obtained his bachelor's degree in mathematics and was subsequently employed in the modelling group, working with cutting-edge mathematical advances and their implementation to real-life problems for various industry clients. While enrolled in a master's degree in modelling for science and engineering at the same university, he participated in a project on high-performance computing during his work placement and master's thesis at the Barcelona Biomedical Research Park. In his PhD thesis with WP5, he will be working on developing a
high-performance computing framework for preprocessing large datasets related to high-resolution geophysical monitoring, combining his mathematical modelling background with his high-performance computing experience.


Our Research Director, Prof. Jo Eidsvik, is featured in the European Consortium for Mathematics in Industry (ECMI) blog today!


One of our CGF students, Robin Rørstadbotnen, has been invited to record his EAGE presentation made at the annual EAGE conference in Madrid in 2022 as an e-lecture.  His presentation was one of the best-rated at the conference and also selected by the EAGE Education Committee.


The disastrous magnitude 7.8 earthquake that struck Turkey and Syria on Monday 6th February was reported by our Partner, NORSAR and was also clearly observed on the seabottom fibre connecting Longyearbyen and Ny-Ålesund (Svalbard), which we are monitoring with DAS.

The image represents DAS data from roughly half an hour (vertical axis) and 60 km of the cable located in Kongsfjorden. The earthquake occurred at 01:17:35 UTC, as reported by USGS. The first arrival (P) is clearly observed at 01:25:42 (UTC). This wave travelled deep into the earth and took 8 minutes to arrive.  The next observed signal (generated by the same earthquake) is the secondary (shear) wave arriving 18 minutes after the quake and the final (third) signal is the surface (Rayleigh) wave arriving 26 minutes after the quake. 

The approximate epicentral distance to Svalbard is 4,780 km. If we assume that the P-, S- and surface- waves each travelled roughly the same distance we can estimate the following velocities for the three waves: 9.8 km/s, 4.3 km/s and 3.0 km/s.


Tjuvlytter på jordkloden med fiberoptiske kabler

A very readable (if you can read Norwegian!) article has just been published.  It explains some of the exciting things we are doing at CGF in clear terms that are accessible to the general scientist and curious public.  Check it out on the site! (

CGF Annual Reports

CGF Annual Reports


The 2021 annual report is available online for download.


The 2020 annual report is available online for download.