08 Apr - 09 Apr Online

NAC 2021

The NAC (Nederlands Aardwetenschappelijk Congres) conferences bring together all fields of research within the Earth Sciences.

NAC 2021 will be held Online on 08 April 2021 & 09 April 2021.

About NAC 2021

The NAC conferences (Nederlands Aardwetenschappelijk Congres) bring together all fields of research within the Earth Sciences. The NAC conferences aim to provide a true interdisciplinary forum for discussion and for young researchers to present their results in a way that is accessible to a broad audience. NAC 2021 will be organised and sponsored by the Domain Science of the Dutch Research Council NWO.

This is the 17th time the NAC is being organised.​ In 1992 NAC was founded by KNAW, KNGMG and NWO.  

NAC goes digital!
NWO is complying with the measures announced by the Dutch government to prevent any further spread of Covid-19. As these measures make a normal NAC edition impossible we will make the most of the technological possibilities to create a great online NAC 2021! More information will follow soon on this website.


The Programme Committee of NAC 2020 is tasked with compiling a broadly appealing programme. Contributions will be scheduled as oral presentations that take place in parallel sessions spread over the two days of the congress. In addition there will be dedicated poster sessions each day, with ample time during the programme for visiting the posters.


Based on the keywords selected during submission of abstracts (see list below), the total number of abstracts and the topics submitted, the Programme Committee will arrange the abstracts into broader overarching parallel sessions. The themes of these parallel sessions will e.g. focus on specific or timely issues in the field of Earth Sciences, or they can aggregate contributions with a methodological or topical similarity. The committee will then decide if an abstract is accepted as an oral or poster presentation within one of those sessions. As the conference will be an interdisciplinary meeting ground for geoscientists, this procedure aims at encouraging researchers from all fields in Earth Sciences to connect, interact and present their progress of research. 

How to submit an abstract

You will have to register first. Please select the option ‘yes’ under ‘submit abstract’. You will receive an unique link by email after you have completed the registration process. This link can be used to login and submit your abstract. Abstracts (max. 250 words) can be submitted not later than Monday 13 January 2020, 23:59 h CET. Please note that the official language of the conference and for submitting abstracts and giving oral and poster presentations will be English. 


The Programme Committee will define the themes of the parallel sessions and compile the conference programme based on the abstracts received before Monday 13 January 2020, 23:59 h CET. From all received abstracts, a selection of authors will be invited to give an oral presentation. By default, authors of the other abstracts will be offered the option of a poster presentation. In February 2020 the final program will be announced on the website and applicants will receive an invitation with instructions for preparing their oral or poster presentations.

Instructions for oral presentations

Oral presentations are scheduled in parallel sessions spread over the two days of the congress. Authors are allotted 15 minutes for presenting, including time for questions and discussion. Authors will be asked to upload their presentation prior to the start of their parallel session. We have listed some tips to help you prepare your talk.

Instructions for scientific poster design

At the NAC you will have an excellent opportunity to practise your academic skills, such as giving poster presentations and poster pitches. Starting 2020, posters will be displayed only on one of the conference days, linked to the topics of parallel sessions. You will be informed beforehand which day you are expected to present your posters. When it comes to designing a scientific poster we have compiled a few ‘best practices’ that you can read on this page. A poster prize will be awarded to the three best posters made by early-career scientists, so if you take note of these tips you might increase your chances of winning! Please note that posters can only be presented in A0 portrait (vertical) orientation of 841 x 1189 mm (width x height). 

Abstract keywords

We welcome contributions from all branches of the Earth Sciences. Abstracts can be submitted using one or two the following keywords:


During the conference various prizes will be awarded. The winners of the prizes will be announced during the plenary session of the NAC. More details about the awards and award ceremonies are given below.

Vening Meinesz Prize

Every other year at NAC, NWO awards the Vening Meinesz Prize. This personal award is intended for early-career researchers in Earth Sciences. The award is named in honour of Prof. Dr Felix Vening Meinesz (1887-1966), one of the founders of Dutch Earth Sciences and of the Dutch Research Council (NWO). He became well-known for his research into gravity, for which undertook a dozen scientific expeditions on board submarines of the Royal Netherlands Navy. NWO awards the prize biennially from his financial legacy, aiming to stimulate promising earth scientists. The next Vening Meinesz Prize will be awarded in 2020. Read more about this award at the NWO website (in Dutch).

Poster prize

Most presentations at NAC will be in the format of a poster presentation, like on many of the international conferences in Earth Sciences. The poster prize aims to award early-career researchers (MSc, PhD, Postdoc) that excel in presenting their scientific work via this presentation format. The top-three posters will be awarded € 250 (first place), € 150 (second place) and € 100 (third place). The selection of the top-three will be performed by a dedicated poster jury, comprising the chair and another member of the Program Committee and a representative of the conference organisers. For competing in the poster prize you will need to sign up your poster in advance of the conference. Furthermore, it is required that you as first author are present at the closing ceremony on Friday. Read more about the assessment criteria and how to sign up for the poster prize.

Photo competition

The photo competition has been a recurring event at the NAC conferences. Pre-registered conference participants can take part in this competition by submitting one original photo on any theme related to Earth Sciences (see also the terms and conditions). The pre-selection phase of the competition during the two months leading up to the conference, and is open for submissions from 2 December to 9 February. Please note that you must be registered for the conference before 9 February in order to take part in the contest. Submitted photos will be judged first by an expert jury to select a top-10. These ten images are printed in large format and will be prominently exhibited at the conference venue. The overall winner will be selected by public vote. The winning photo will be featured in the Geo.Brief magazine of the KNGMG and the winner will receive a free registration for next year’s NAC.

One of the photos will be used for the next year's website. The NAC 2021 home page features a photo taken by Els Ufkes (Free University, Amsterdam). The photo shows weathered dolerites & quiver trees (Mesosaur fossil bush camp, Spitzkop farm, Keetmanshoop, Namibia). Els remarks "Imagine Father James (‘Vader Jacob’) played on these dolerite 'figures' which are part of the Paraná-Etendeka related giant dyke swarms, locally also known as the Giant’s Playground."  

Prizes by other organisations:
NJG publication award

Every two years the Editorial Board of the Netherlands Journal of Geosciences presents the Publication Award, recognizing the best NJG paper first-authored by a young and promising scientist. Besides the award document the award includes a book voucher and the author is offered publication space in the Geo.Brief magazine of the KNGMG. 


The Escher Prize (in Dutch: Escherprijs) was established in 1994 and was named in honour of the Leiden professor in ‘Algemene Geologie’ Prof. Dr B.G. Escher (1885-1967). The prize is awarded annually by an expert jury from the KNGMG to the author(s) of the best or most original thesis in (applied) Earth Sciences in the broadest sense of the word.


The Jelgersma Prize (in Dutch: Jelgersmaprijs) was established in 2016 and was named in honour of dr. Saskia (Kiek) Jelgersma (1929-2012). The prize is awarded annually by the KNGMG to the author(s) of the best or most original Bachelor thesis in (applied) Earth Sciences in the broadest sense of the word. With this the KNGMG puts emphasis on the importance of the Bachelor thesis as the first piece of real science by students.









Keynote speakers

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More information about the registration will follow soon on this website.

NAC 2021 registration is not open.

The registration period is from 01 January 2021 until 25 March 2021.

Photo competition

At NAC there will be a photo competition. Every participant in NAC 2021 can submit one photo on any theme related to the broad field of earth sciences. To submit a photo for the competition, one must be registered for NAC 2021 (see terms and conditions). Submitted photos will be exhibited at the conference.

The photos will be shown at a later stage.


We would like to thank our exhibitors for their dedication and support to NAC 2021. They have made this event possible.

This section will be ready at a later stage.