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42 Workshop Reports

search, which were presented to the addressed future LUCIFS research ACKNOWLEDGMENTS The Deutsche Forschungsgemeinschaft whole group of participants in a suc- strategies against the backdrop of the (DFG) gave considerable support by ceeding plenary session. At least one workshop contributions and current covering all workshop costs including staff of the small groups decided to edit a approaches to System Science appropriations for the large number of student helpers. PAGES co-sponsored the joint review paper based on the top- and will result in a revised LUCIFS workshop by funding the travel costs of a ics discussed during that afternoon. research plan. Workshop contribu- number of participants from Eastern Europe Richard Dikau chaired the fi nal tions and results will be published and South America. plenary discussion on Sunday morn- in a special issue of Geomorphology PETER HOUBEN ing. His introduction dealt with the (Elsevier). People interested in LU- Wolfgang Goethe University, Frankfurt, development of LUCIFS objectives CIFS activities are invited to visit the Germany; [email protected] and approaches over the past 6 PAGES Focus 5 homepage (www. years and included a critical review pages-igbp.org/science/research/fo- of past defi ciencies. The discussions cus5.html) for further information. Linkage between marine and terrestrial processes during past rapid climatic changes

BARCELONA, SPAIN; 13-15 MARCH 2006

This workshop was organized by a Alboran were discussed new working group of the INQUA for their potential in obtaining Commission on Coastal and Marine ultra-high resolution records. Processes. The group was inspired New data from the Gulf of Ca- by our sadly missed colleague, diz provided the basis for an Nick Shackleton, with the aim of IODP drilling proposal under analyzing paleoclimatic records evaluation. from an integrated marine and ter- Zone 5: The Western Iberian restrial perspective. The objective Margin is a unique area for of the workshop was to identify marine-terrestrial linkage at key scientifi c questions that could centennial-millennial scale. be addressed through future drill- New Holocene records off the ing/coring programs. New data sets Tagus River resolve decadal from various regions (Fig. 1) were changes linked to the North reviewed, and stimulated discus- Atlantic Oscillation (NAO). sions on atmospheric and oceanic Holocene sediments from the processes active in propagating Galician Rias record changes and modulating past rapid climatic in the Meridional Overturning variability: Circulation (MOC). Marine pol- Zone 1: Sediment cores from the len records suggest different delta fan systems of the Congo Figure 1: Map illustrating the regions from timing in the evolution of veg- which data were presented and discussed Ogooué, Nyong and Sanaga during the workshop: (1) F. Marret and S.-Y. etation and sea level, providing rivers record changes in river Kim; (2) S. Weldeab; (3) L. Dupont and O. an intriguing insight into the discharge associated with Romero; (4) I. Cacho, F. Martinez, F. Lobo, feedback mechanisms during L. M. Fernández-Salas, E. Llave and J. Her- latitudinal migration of the In- nandez-Molina; (5) F. Abrantes, T. Rodrigues, glacial interceptions. tertropical Convergence Zone L. Pena, C. Tzedakis and M. F. Sanchez-Goñi; Zone 6: Sediments from the south- (ITCZ) over Africa during the (6) J. Scourse; (7) W. Austin and I. Hall; (8) western British Margin record I. Hall. Map Source: IHO-UNESCO, General last deglaciation and Holocene Bathymetric Chart of the , Digital Edi- the millennial-scale evolution periods. tion, 2003, www.ngdc.noaa.gov/mgg/gebco of the British ice sheets (BIS). Zone 2: The evolution of the East (thanks to B. de Mol for data map process- The role of the British Shelf ing). African ITCZ was discussed on in emitting or trapping atmo-

the basis of sediment cores means of new high-resolution spheric CO2 was discussed on from the Nile delta fan, which records from around Cape the basis of model and proxy records changes in the hy- Blanc and off Morocco. data of sea level, tidal dynam- drological regime of the Nile Zone 4: Multi-proxy analyses of ics and primary production. catchment regions. sediments provide Zone 7: The North British Margins Zone 3: The humidity evolution of records of both marine and provide sequences with ex- North Africa and the interplay terrestrial processes at Dan- traordinary potential to study between low- and high-latitude sgaard-Oeschger frequency. BIS sensitivity, and the inter- processes during rapid climatic Geophysical data from shallow play between surface oceanog- changes were discussed by areas in the Gulf of Cadiz and raphy and MOC. New records

PAGES NEWS, VOL.14, N°2, AUGUST 2006 Workshop Reports 43

from the Scottish Fjords show cifi c regions such as the N. African will be held in Oban, UK from 15-16 the potential for monitoring and W. Mediterranean regions and September 2006. past decadal changes linked to the British Margin, to work on fu- the NAO. ture drilling proposals. We also ACKNOWLEDGMENTS Zone 8: The Atlantic-Indian plan a thematic workshop on the This workshop was co-sponsored by INQUA, PAGES, the Spanish Ministry of connection in relation to South geographical distribution of Hein- Education and Science (Grant: CGL2005- African climate was discussed rich event signatures across the N. 23763-E-CLI) and the Faculty of Geology, in the context of new sediment Atlantic region by September 2007. University of Barcelona. records from the Agulhas Cur- An associated workshop on “Fjord ISABEL CACHO rent and a submitted IODP drill- Environments: Past, Present and Fu- University of Barcelona, Spain; ing proposal. ture” (post Challenger 2006 meet- [email protected] Future group activities will involve ing; www.sams.ac.uk/challenger/) new workshops focusing on spe- Monitoring Indonesian throughfl ow variability: Challenges and perspectives

KIEL, GERMANY; 19-22 JULY, 2006

The transport and thermohaline North Pacific Thermocline • Little Ice Age (1500-1900) includ- South Pacific Thermocline Pacific Ocean stratification of the Indonesian ing Tambora eruption (1815) as Throughfl ow (ITF, Fig. 1) infl uence a marker event Halmahera Molucco Sea the heat and freshwater budgets 1.5 • Medieval Warm Period (1000 si e ~ a w in assar Straitla N u a of both the Pacific and Indian S L AD±200) Mak 8

Oceans, and alter patterns of heat • Early Holocene (9 ka) and water vapor exchange with Java • Last Glacial Maximum (19-23 ka)

k r o o 4.3 b 4.5 im m T o 1.7 the atmosphere on a global scale. L • Specifi c Marine Isotope Stage 10 ITF The ITF, which is tightly linked to (MIS) 3 events regional climate systems, such as Figure 1: Main pathways of present-day Indo- • MIS 5e (122 ka) the El Niño Southern Oscillation nesian Throughfl ow at thermocline depth and • MIS 11 (400 ka) estimates of total volume transport (in Sver- (ENSO) and the Australasian mon- drups). Modifi ed from Gordon (2005) Longer time series will provide in- soon, also plays a central role in sight into (1) the phasing between the global “conveyor” circulation overview of the latest research ini- ITF variations and other factors: thereby exerting a critical control tiatives on oceanography and pa- warm pool changes, monsoons, on Earth’s climate. It is likely that leoceanography in the ITF region, atmospheric CO2 and sea level, the ITF was substantially modu- and to outline urgent research and; (2) the ITF response to the lated by changes in the geometry goals for the next few years. “mean state of the tropical Pacif- of the Indonesian pathways due Proxy studies that target the ic” (“ENSO” thermocline tilt, SST to sea level changes during the reconstruction of inter-ocean gra- distribution). New IMAGES coring Pleistocene and tectonic reorgani- dients and the transfer of heat, salt initiatives will focus on regions zations of the archipelago during and nutrients are crucial. These re- that still have poor core coverage: the Cenozoic. Because of its close constructions can be accomplished Strait, the southern Ce- link with regional climate systems, by providing reliable estimates of lebes Sea, east and west of Halma- it may have also experienced more (1) thermocline structure and tem- hera, , Ninetyeast subtle changes during the Holo- perature in the ITF region, and; Ridge and West of Sumatra. Since cene. The processes driving ITF (2) ITF circulation changes (inten- only a few piston cores in this high variability and its magnitude are, sity, vertical structure of fl ow and accumulation rate region will reach however, not very well constrained temperature weighted fl ow). Ulti- back to MIS 12, the drilling of new nor is the effect of ITF variability on mately, time slice reconstructions IODP Sites in the and tropical and extra-tropical climate should be integrated with modeling Makassar Strait will be crucial for fully understood. studies to evaluate the infl uence of evaluating the impact of tectonic To address these issues a the- changing boundary conditions on and orbital forcing on regional and matic workshop was held from the ITF (i.e., insolation, volcanic ep- global climate. 19-22 July 2006 at the Institute of isodes, geometry of passages, sea Geosciences, Kiel University, Ger- level), and the linkages between WOLFGANG KUHNT many, attended by 22 scientists ITF variability and fl uctuations in Christian-Albrechts-Universität, Kiel, Germany; from the U.S., Switzerland, France, regional and global climate. Time [email protected] Germany, China, India, , slices of specifi c interest are: Timor Leste and Australia. The goal • Last 50 years of the meeting was to present an

PAGES NEWS, VOL.14, N°2, AUGUST 2006