Southern Ocean

Section map

More information about each cruise is available — please click on the map labels below. Yellow lines indicate completed cruises, black lines indicate International Polar Year cruises, and red lines indicate planned cruises.

GEOTRACES cruise sections in the Southern Ocean GP19GA12GA02GP17 ANTXXIV/3 (GIPY5) au0701 SIPEX (GIPY3) Bonus Good Hope (GIPY4) ATOS2 (GIPY8) au0703 SAZ SENSE (GIPY2) TAN0609(GIPY1) au0806 SR3(GIPY6) GI04 GI08 GS01 GS02 GS03 GS04 GS05
Southern Ocean GEOTRACES cruise sections ©

Cruise details

Section Country Cruise Dates (completed cruises/ approved future cruises) Information



Cruise KH-09-5 legs 1, 2 and 3 sailed in November 2009 on the Japanese ship RV Hakuho Maru. The cruise aimed at precise and detailed measurements of trace elements and isotopes in the Indian Ocean. Atmosphere and bottom sediment samples were collected to help identify processes and fluxes that control the distribution of trace elements in water columns, and to elucidate their important linkage with global climatic change. Please consult the preliminary cruise report for further information or contact Dr Toshitaka Gamo (Chief Scientist and GEOTRACES Scientist). For further details on parameters sampled on the cruise and other relevant metadata please see the GEOTRACES pre-cruise metadata form.
Still to be decided

Still to be decided

India to Antarctica.
New Zealand



Tasman Boundary Conditions Voyage TAN0609 was a NIWA (New Zealand) led cruise focusing on the Tasman Sea. focusing on the Tasman Sea, departing and returning from Wellington port, New Zealand with Dr Philip Sutton as the Chief Scientist. Professor Philip Boyd was the GEOTRACES Scientist. More information can be found in the cruise report. For further details on parameters sampled on the cruise and other relevant metadata please see the GEOTRACES post-cruise metadata form.




SAZ-SENSE is a study of the sensitivity of Sub-Antarctic Zone waters to global change. A 32 day oceanographic voyage onboard Australia's ice-breaker Aurora Australis was undertaken in mid-summer (January 17 - February 20) 2007 to examine biogeochemical processes in SAZ waters west and east of Tasmania, and also in the Polar Frontal Zone south of the SAZ with Dr Brian Griffiths as the Chief Scientist and Dr Andrew Bowie as the GEOTRACES Scientist. The strategy is to compare low productivity waters west of Tasmania (areas with little phytoplankton) with higher productivity waters to the east, with a focus on the role of iron as a limiting micro-nutrient.  This cruise formed part of the GEOTRACES IPY programme. Please consult the GEOTRACES post-cruise metadata form for more information on parameters sampled.




The Sea Ice Physics and Ecosystem eXperiment (SIPEX) is one of Australia's major contributions to the International Polar Year (IPY). The expedition explored the sea ice zone around Antarctica in September - October 2007 and investigated the relationships between the physical sea ice environment and the structure of Southern Ocean ecosystems. The Chief Scientist on board was Dr Anthony Worby and the GEOTRACES Scientist Dr Andrew Bowie. Please see the cruise report and GEOTRACES post-cruise metadata form for more information.




The MD166 Bonus-Good-Hope cruise sailed in 2008 aboard the Marion Dufresne. This cruise was part of the international IPY programme and GEOTRACES was one of the main projects associated with this cruise. The Chief Scientist on board was Professor Sabrina Speich and the GEOTRACES Scientist Dr Marie Boye. Details can be found in the cruise report and the GEOTRACES post-cruise metadata form.




ANTXXIV-3 Zero and Drake was a German cruise which departed Cape Town in South Africa and returned to Punta Arenas, Chile from February to April 2008. The Chief Scientist on board was Dr Eberhard Fahrbach and the GEOTRACES Scientist Professor Hein J.W. de Baar. Please see the cruise report and the GEOTRACES post-cruise metadata form for further details.




Australian-led voyage aboard Aurora Australis, organised by the Antarctic Climate and Ecosystems Cooperative Research Centre, followed the 'SR3' transect along approximately 140°E between Tasmania and the coast of Antarctica. This transect has been well characterised oceanographically in the past two decades. The results of this work will yield the first synoptic circumpolar measurements of micronutrient trace elements in the Southern Ocean. Dissolved iron data along the SR3 transect represent an order of magnitude improvement in sampling resolution and show widespread iron limitation in upper ocean waters along the transect. The Chief Scientist was Dr Stephen Rintoul and the GEOTRACES Scientist Dr Edward Butler. Please consult the voyage report for more information. For further details on parameters sampled and other relevant metadata please see the GEOTRACES post-cruise metadata form.




ATOS-2 cruise is part of the International Polar Year (IPY) cruises. ATOS-2 set sail from Punta Arenas, Chile to Antractic Peninsula and back to Ushuaia, Argentina from 23 January to 03 March 2009. The cruise sampling for GEOTRACES key elements started in the Weddell sea and continued to the west coast of the Antarctic Peninsula through the Brandsfield strait. Dr Duarte Carlos was the Chief Scientist of the cruise and Dr Tovar-Sánchez Antonio was the GEOTRACES Scientist.



IN2018_V01 (GS01) cruise took place along 140°E (the SR3 line) from 11 January 2018, 21 February 2018 (starting from Hobart). Dr Andrew Bowie was the GEOTRACES Scientist. For further details sampled on this cruise please see the GEOTRACES post-cruise metadata form.

Still to be decided

SWINGS (South West Indian Geotraces Section) cruise proposal was submitted (PIs Dr Jeandel Catherine and Dr Planquette Helen). SWINGS is expected on the RV Marion-Dufresne for 2019-2020.

Still to be decided

Perth to Kerguelen following WOCE I05 line west of Australia.
Still to be decided

Still to be decided

This section was proposed during the Indian Ocean Geotraces workshop.

Still to be decided

Dr Katharina Pahnke will be the Chief Scientist on this South East Indian Ocean cruise. The objectives of this cruise are to source trace elements and isotopes (TEI's) from Antarctica and around Australia, TEI signatures of major water masses and TEI distrubutions across the circum-Antarctic frontal system. Please contact Dr Katharina Pahnke for further information on this cruise. Details will be updated closer to the time of the cruise departure.



GA02 Leg 3 JC057 sailed on the UK research ship RRS James Cook departing Punta Arenas (Chile) on the 02 March 2011 and ending in Las Palmas (Spain). Dr Micha Rijkenberg (Royal NIOZ) was Chief Scientist and Professor Hein J.W. de Baar the head of the Netherlands GEOTRACES programme.

Professor Hein J.W. de Baar was the GEOTRACES Scientist on all 3 cruise legs. For more details see the cruise report. Information on parameters sampled on this leg of the cruise can be seen in the GEOTRACES post-cruise metadata form.

Still to be decided

Still to be decided

An extension of GA11 to 60ºS was agreed upon at the 2015 Scientific Steering Committee (SSC). Further information regarding this cruise will follow shortly.

Still to be decided

The cruise will focus on the Amundsen Sea sector of the Southern Ocean, and include stations over the Antarctic continental shelf and slope, as well as stations in the ACC that including crossover stations with a complementary cruise, GP17-OCE, which has also been recommended for funding. The GP17-ANT cruise was initially proposed for January-March 2022, but now expected to be delayed until the austral summer season of 2022-2023 or 2023-2024.

Still to be decided

The RV Hakuho Maru (KH14-06) set sail from Tokyo, Japan on 2 December 2014 and returned to the same port on 26 February 2015, sampling in the South West Pacific Ocean and Antarctic Sea with Dr Toshitaka Gamo as Chief Scientist onboard. The GEOTRACES Scientist was Dr Hajime Obata. For further details on parameters sampled and other relevant metadata please see the GEOTRACES post-cruise metadata form.

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