This section shows GEOTRACES outreach materials that we invite you to use in your activities and presentations, including: posters, cartoons, webinars, textbooks, videos, etc.

Outreach to local populations who depend on the Arctic Ocean for their livelihood

Ana Aguilar-Islas (University of Alaska) gave a presentation on the GEOTRACES Arctic project at the 2015 Kawerak Regional Conference in Nome, Alaska (1- 4 June 2015).

Kawerak Inc. organizes services for residents of the Bering Strait Region, 75% of whom are Eskimo, Aleut or American Indian, descent. Kawerak's organizational goal is to assist Alaska Native people and their governing bodies to take control of their future. With programs ranging from education to transportation, and natural resource management to economic development, Kawerak seeks to improve the Region's social, economic, educational, cultural and political conditions.

The power of GEOTRACES: a 3D example of Thorium-230 along GEOTRACES North Atlantic Sections

The central component of GEOTRACES is a series of cruises spanning the global ocean. These cruises collect water and analysis of many trace elements and isotopes. The power of the GEOTRACES field work is demonstrated below by an example of 3D animation resulting from data collected on GEOTRACES North Atlantic cruises:

Figure: Distribution of dissolved 230Th along GEOTRACES North Atlantic GA02 and GA03 sections. Click here to view the video in full screen.

This animation illustrates the distribution of dissolved Thorium-230 (230Th) in the North Atlantic Ocean along GEOTRACES sections GA02 and GA03 (Click here to access the GEOTRACES Atlantic Ocean section map). Dissolved 230Th is supplied uniformly throughout the ocean by radioactive decay of dissolved uranium. It is removed by adsorption to particles as they sink to the sea floor. Consequently, the distribution of dissolved 230Th informs us about the location and intensity of the processes that remove many trace elements and other insoluble chemicals from the ocean. In addition, the concentration of dissolved 230Th tends to increase with the age of the water, that is, with time since the water mass was last at the ocean surface. This effect is evident here in that dissolved 230Th concentrations tend to increase from the surface to the bottom, from north to south and from west to east, corresponding to increasing water mass age in the North Atlantic Ocean. Departures from this general trend indicate the locations of unusually intense removal by adsorption to particles. Three such examples can be identified: 1) within the plume of hydrothermal particles surrounding the crest of the Mid Atlantic Ridge, 2) near the sea floor where particles resuspended from the bottom enhance the removal process, and 3) approaching the margins of North America and North Africa where the effects of continental erosion and elevated rates of biological productivity cause high particle abundance. Because processes that regulate the removal of 230Th from the ocean also affect other insoluble chemicals, this illustration of the distribution of dissolved 230Th informs us about the fate of many chemicals in the ocean.


GEOTRACES Roll up Poster (February 2018)

2018 GEOTRACES Banner

 This roll up banner was designed to promote the Second Intermediate Data Product at the SCOR booth at Ocean Sciences 2018 (Portland, Oregon, USA, February 2018). Click here to open it in a new window.


GEOTRACES Roll up Poster (February 2016)

2016 Final Geotraces rollup

 This roll up banner was designed to promote the First Intermediate Data Product at the SCOR booth at Ocean Science 2016 (New Orleans, Louisiana, USA, February 2016). Click here to open it in a new window.


BCO-DMO Poster (for 2015 Fall AGU)

Rauch GC51F 1155 Poster l

Click here to download a pdf version of the BCO-DMO Poster (3MB).

The Biological and Chemical Oceanography Data Management Office (BCO-DMO) serves as the U.S. GEOTRACES Data Assembly Center, and facilitates the management, sharing, and long-term preservation of trace element and isotope data. Download the poster to learn about the availabiliy and management of marine trace metal data!

GEOTRACES Poster (for 2015 Goldschmidt Conference)

2015 GEOTRACES poster

Click here to download a pdf version of the GEOTRACES Poster (7MB).


GEOTRACES Poster (2011, Introduction to the GEOTRACES Programme)

GEOTRACES Poster web

Click here to download a pdf version of the GEOTRACES Poster (21MB).


GEOTRACES Roll up Poster

Geotrace Banner blue4

 This roll up banner was designed to promote the First Intermediate Data Product at the SCOR booth at Ocean Science 2014 (Honolulu, Hawaii, February 2014). Click here to open it in a new window.


Learning Oceanography with Cartoons


Ocean Science Posters with cartoons designed by Tung-Yuan Ho, GEOTRACES SSC member, and his team are available to download from the Marine Biogeochemistry Laboratory (RCEC) Web site:

*Non-commercial use only.

*Copyright@ Tung-Yuan Ho and Ya-Ling Huang.

GEOTRACES webinar series

A 4-part webinar series featuring GEOTRACES reseach was held in April-May 2015 organized by Ben Twining and hosted by the COSEE-OS office at University of Maine. 

It was focused on trace elements and what they can tell us about biogeochemical processes, the carbon cycle, and climate. Nine scientists, each studying a unique facet of ocean chemistry, shared their work and the importance of researching these rare and vital "clues" from the ocean.

How do key micronutrients get to the middle of the ocean? Why should (or shouldn't) we fertilize the ocean?
What are oxygen minimum zones? How might they affect life?
How are hydrothermal vent fluids created and how do they move through the ocean?

These topics (and more!) were covered via presentations from scientists using interactive concept maps, brimming with images, videos and other resources available for use after the series concludes.

You can watch the videos of the webinar series by clicking on the links below (you will be directed to the COSEE website):

An Introduction to GEOTRACES by Ben Twining and Phoebe Lam.
Nutrients in the Open Ocean - Claire Parker, Dr. Kristen Buck, and Dr. Kathy Barbeau
Oxygen Minium Zones by Carl Lamborg and Dr. Dan Ohnemus.
Hydrothermal Vents and Megaplumes by Jessica Fitzsimmons and Dr. Brandy Toner.

GEOTRACES Webinar Series Information:

Marine Geochemistry Textbook


Learn about the GEOTRACES programme in the Marine Geochemistry Textbook published by Matthieu Roy-Barman and Catherine Jeandel.

Book Barman

Marine Geochemistry: Ocean Circulation, Carbon Cycle and Climate Change

Matthieu Roy-Barman and Catherine Jeandel

* Self-contained companion for a course on marine geochemistry

* Comprehensive coverage of a wide variety of interlaced interdisciplinary topics

* Provides a balance of didactic and indepth information. Includes exercises throughout the text, and answers at the end of the book

* Introduces new topics based on ongoing research programs such as GEOTRACES, Global Carbon Project, Tara Ocean

Publisher: OUP Oxford (8 Sept. 2016)
ISBN-10: 0198787499  ISBN-13: 978-0198787495 


GEOTRACES in the Handbook of Environmental Chemistry

2016 Textbook Demina

Research results from GEOTRACES are several times cited in the volume "Trace Metal Biogeochemistry and Ecology of Deep-Sea Hydrothermal Vent Systems" of the Handbook of Environmental Chemistry (SPRINGER- Nature, 2016).


Trace Metal Biogeochemistry and Ecology of Deep-Sea Hydrothermal Vent Systems
Eds. Liudmila L. Demina and Sergey V. Galkin

Handbook of Environmental Chemistry. Founded by Otto Hutzinger. Eds. in Chief Damia Barcelo, Andrey G. Kostianoy. SPRINGER- Nature. 2016. V. 50. 210 pp. ISSN 1867-979X



GEOTRACES in Treatise on Geochemistry textbook

Textbook Bruland

A chapiter devoted to GEOTRACES is included in the second edition of Holland H.D. and Turekian K.K. "Treatise on Geochemistry" under chapiter 8.2, pages 19-51.


Bruland K.W., Middag R. and Lohan M.C. (2014) Controls of Trace Metals in Seawater. In: Holland H.D. and Turekian K.K. (eds.) Treatise on Geochemistry, Second Edition, vol. 8, pp. 19-51. Oxford: Elsevier.

GEOTRACES in Quantitative Chemical Analysis textbook

textbook webA section dedicated to GEOTRACES is included in the eighth edition of the Daniel C. Harris's textbook "Quantitative Chemical Analysis". The section is included under chapiter 20 on page 247.

Harris D.C (2011) Quantitative Chemical Analysis, WH Freeman and Company, 
ISBN-13: 978-1-4292-1815-3

21 questions and answers about GEOTRACES

We invite you to view this video introducing the International GEOTRACES Programme. Questions related to the GEOTRACES programme are asked to seven GEOTRACES researchers: how was the programme developed, why was it important for the programme to commit to developing a merged global database with rigorous data quality control, what is the international coverage of the programme, and others.

You can choose to view the entire video by clicking on the play button below (it lasts 18 minutes) or select a specific question below to view the sequence where this question is answered.

We hope that you enjoy the video!

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Read more: 21 questions and answers about GEOTRACES

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...

Read more at:


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)

Analysing mercury samples in the laboratory

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!


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

 Data Product (IDP2017)


 Data Assembly Centre (GDAC)


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