Trace metal chemistry: less is more

Dr. Tim Conway from University of South Florida brings a wealth of understanding of trace metals...

One billion liters of seawater would be required to gather just 25 grams of iron, yet this trace element is essential to every form of life on the planet.  A group of scarce but biologically important elements in the ocean, referred to as trace metals, can either limit the growth of organisms or be toxic, depending on the concentration.  Dr. Tim Conway brings a wealth of understanding of trace metals, in part due to extensive interaction with the International GEOTRACES program, a study of the marine biogeochemical cycles of trace elements and their isotopes...

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2016 Investigator voyage to the Kerguelen Plateau

View a compilation of highlights from the IMAS-led HEOBI 2016 cruise (GEOTRACES process study) by the Australian MNF Research Vessel Investigator to the Southern Ocean and Kerguelen Plateau. Featuring the first video ever taken of the volcano Big Ben on Heard Island erupting, and at sea collection of samples from the Southern Ocean. 


Video posted by IMAS - Institute for Marine and Antarctic Studies (Published on Feb 23, 2017)

U.S. GEOTRACES Arctic Expedition video "Historic Research Expedition to Arctic Ocean"

We invite you to discover an amazing video prepared by the Florida International University (FIU) about the U.S. GEOTRACES Arctic Expedition. Enjoy it!

Analysing mercury samples in the laboratory

Polar bears investigate GEOTRACES Equipment

We invite you to view the video below to meet three curious polar bears that investigate the cable of the Canadian GEOTRACES clean sampling system during the 2015 GEOTRACES Arctic expedition.


The video was taken by Kathryn Purdon (undergraduate student, University of Victoria, Canada) on September 16, 2015, near 75 N 150 W in the middle of the Beaufort Sea in the Arctic Ocean. The ship was located far from sea ice and land. Indeed, Arctic sea ice extent was the fourth lowest on record this year and there has been speculation that this imposes stress on polar bears which rely on the ice to hunt. They tested out the cable (which is made of a synthetic fiber similar to kevlar that is used in bulletproof vests) with their teeth. In the end the cable survived intact.  The equipment was retrieved as quickly and safely as possible so the ship could move off and give the bears their space (click here to discover the equipment being deployed). 

If you want to learn more about this history, please visit Prof. Jay Cullen Lab's webpage.  

All what you need to know about GEOTRACES

What is GEOTRACES? How did GEOTRACES come to life?
What is a GEOTRACES cruise? What does intercalibration consist of?...

 GEOTRACES senior scientists explain you all what you need to know about GEOTRACES.

Do not miss this very interesting video describing the GEOTRACES international programme!


US Arctic GEOTRACES Expedition: Educational videos

Find below a selection of videos that PolarTREC's Teacher Bill Schmoker made during the US GEOTRACES Arctic Expedition. View the complete compilation of videos at:

Feel free to use them on your outreach activities!

Building the Bubble Time Lapse, Dutch Harbor

Time lapse of the final bubble building for the 2015 US Arctic GEOTRACES cruise aboard USCGC Healy in Dutch Harbor, Alaska. Filmed by PolarTREC Teacher Bill Schmoker.

Read more: US Arctic GEOTRACES Expedition: Educational videos

Journey to the top of the World

An international mission to map geochemistry of the Arctic Ocean

Read this very interesting and appealing article about the U.S. Arctic GEOTRACES expedition and watch the videos included in it. This article has been prepared by the Florida International University, home institution of Dave Kadko, the chief scientist of this expedition:

A pdf version of the article is available here.

 16 FIU Kadkof

Canada Arctic GEOTRACES Expedition: Preparing and deploying sampling systems

Two videos documenting work for educational purposes on the icebreaker CGCS Amundsen as part of the Canadian Arctic GEOTRACES expedition are available below:

Preparing the Trace Metal Rosette for Deployment in the Labrador Sea

 Scientists from the University of Victoria and University of British Columbia work together to prepare a specialized trace metal clean seawater sampling system to be deployed in the Labrador Sea during July 2015.

Source: Cullen Lab: Chemical Oceanography
Music: "Paganini: 24 Caprices For Violin, Op.1 - No. 24 In A Minor" by David Garrett.

Read more: Canada Arctic GEOTRACES Expedition: Preparing and deploying sampling systems

GEOTRACES videos displayed at 2016 Ocean Sciences

Discover the video played at the Scientific Committee on Oceanic Research (SCOR) Booth at 2016 Ocean Sciences which documents scientific activities of SCOR-sponsored projects, including GEOTRACES.

Video compiled and edited by: Elena Masferrer Dodas, GEOTRACES IPO


Float Your Boat outreach project

US GEOTRACES participates in the “Float Your Boat” an educational outreach program that provides young people an opportunity to learn about the changing Arctic, marine debris, and maritime careers through participation in a study of Arctic drift patterns, by sending their own toy boats to the Arctic. This project recreates an historic drift cask study conducted at the turn of the last century. Float Your Boat aims to provide students with an understanding and appreciation of their connection with the world’s oceans.


The US GEOTRACES plans to deploy over 1300 boats on the ice as drifters to track the ice movement across the Arctic. This project was featured on the Float Your Boat home page:

A short (less than a minute) video showing all the 1,300 colourful boats as they were packed in boxes for loading on board USCGC Healy is available on the following link:



 Data Product (IDP2017)


 Data Assembly Centre (GDAC)


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