(last interglacial), and 700,000 years ago (mid-Pleistocene base). Com- 

 parable maps for present time form the basis for interpretation. 



Presently a,vailable core archives are adequate to provide sample mate- 

 rial for the study. The general plan of research work, as shovi^n in Figure 

 19, includes: 



a. Survey of existing core collections to determine those most suitable 

 for the base grid for the paleo-oceanographic study. This consists primarily 

 of routine paleontological examinations, to be done within the first year ; 



b. Acquisition and initial interpretation of paleontological, sedimen- 

 tological, and geochemical data on suitable grids for all levels; 



c. Multivariate analysis and computer model application to provide 

 interpretative paleo-oceanographic maps for each level. This is preceded 

 by further extension and consolidation of present work on quantitative re- 

 lationships between the oceanic environment and sediment properties ; 



d. The results of this study will be interpreted in close coordination 

 with the ongoing examination of Greenland and antarctic ice cores, which 

 yield critical information regarding high latitude glacial and interglacial 

 climates and their effect on the temperature and salinity of bottom and 

 surface ocean waters. 



Project Management 



This is an integrated project in which the data are produced by 

 many individual specialists and experts. Data interpretation is a joint 41 



effort of all participants. Coordination is achieved by a managing struc- 

 ture, shown in Figure 20, consisting of a project manager and a number 

 of task leaders. The Executive Committee consists of five members who: 

 1) assume overall responsibility for the project; 2) coordinate and as- 

 sure the free flow of information among institutions; 3) assure coordi- 

 nation among task groups, and; 4) set and implement policy. 



DESCRIPTIVE/ PREDICTIVE GLOBAL MODELS 



One of the goals of the U.S. contribution to the International Decade 

 of Ocean Exploration is to advance the development of a numerical model 

 of the world ocean. The motivation for developing such a model is to pro- 

 vide: 1) a tool for analyzing data collected by other IDOE programs; 2) a 

 means for designing future large-scale observational experiments; and 3) 

 an aid to eventual long-range prediction of weather and climate through 

 development of large-scale air-sea interaction models by combining the 

 global ocean model with global numerical models of the atmosphere. 



Presently supported as a part of this area of emphasis are investiga- 

 tions carried out at the Geophysical Fluid Dynamics Laboratory (GFDL) 

 of the National Oceanic and Atmospheric Administration, at Princeton 

 University. The GFDL world ocean model is based on the concept of 

 boxes or cells. The entire ocean is subdivided into as many of these 

 small units as computer capacity will permit. The boxes make up an 

 irregular three-dimensional array. They are stacked downward from 

 the surface with the number in each stack dependent on the local depth. 



