OCEANUS cruises 141 (28 October-4 November 1983) and 145 (22-29 January 1984) were the tenth and eleventh cruises to the Long Term Upper Ocean Study (LOTUS) area centered at 34 N, 70W. During OCEANUS 141, a C.S. Draper labs profiling current meter (PCM) was set, the fifth LOTUS surface mooring was recovered, and the deployment of the sixth LOTUS surface mooring was unsuccessfully attempted. The sixth surface mooring was finally deployed in January, on OCEANUS 145. This report provides details of the work accomplished on both cruises, as well as presenting the hydrographic data collected.

OCEANUS cruise number 129 (28 October - 4 November, 1982) was the eighth in a series of cruises to the Long Term Upper Ocean Study (LOTUS) area centered at 34 deg. N, 70 deg. W. In the LOTUS area seven SOFAR floats were launched, two moorings were recovered (a LOTUS surface mooring and a C.S. Draper Labs profiling current meter mooring), and a surface mooring which replaced the one recovered was set. Seven CTD stations were also completed in the LOTUS area. Outside the LOTUS area a subsurface mooring was set in the Gulf Stream in cooperation with H. Bryden's (WHOI) Gulf Stream Observations project, and a WHOI engineering mooring at Site D was recovered, examined and redeployed. In addition, several XBT sections were made, one along 70 deg. W between 40 deg. N and 34 deg. N, a second surveyed a cold core ring discovered during the trip to the LOTUS area and a third was made in the vicinity of the Gulf Stream Observations mooring. Part I of this report is a summary of the major cruise activities and part II presents the hydrographic data (CTD and XBT) collected during the cruise. (Author).

OCEANUS cruise 154 (16-23 May 1984) was the final cruise in the two year field program of the Long Term Upper Ocean Study (LOTUS). The work occurred primarily in the LOTUS area (34°N, 70°W), where the entire moored array was recovered. The moorings were the following: the LOTUS-6 surface mooring (No. 792), a subsurface mooring (No. 788), two intermediate moorings (Nos. 789, 790), and a C.S. Draper Labs profiling current meter (PCMlH) mooring. Also on OCEANUS 154, a mooring was deployed for the U.S. Geological Survey at approximately 40°10'N, 69°58'W. On the return trip, an engineering test mooring was recovered at approximately 39°11'N, 70°01'W, some elements removed for testing, and then redeployed in the same location. This report presents the hydrographic data collected on OCEANUS 154, as well as providing details of the work that was accomplished.

The explosive growth of dynamical system theory stem in large part from the realization that it is applicable to many natural phenomena. Indeed, much of the theoretical dvelopment has been sparked by numerical and laboratory experiments which exhibit ordered sequences of behavior that call for a general framework of interpretation. Five lectures exposed us to elementaty examples of bifurcation and chaos, to symmetry breaking, normal forms and temporal and spatial disorder, as well as to pertinent fluid mechanical and astrophysical phenomena. In addition are the development with an elegant summary of different types of intermittency; Seminars on phase instability and turbulence as an extension of the lecture series; and the fascinating correspondence between the frequencies observed in one recent fluid mechanics experiments and results from number theory relating the Fibonacci series to the golden mean.

OCEANUS cruise number 119 (6-14 May, 1982) was the seventh in a series of cruises to the Long Term Upper Ocean Study (LOTUS) area centered at 34 N, 70 W. During this cruise five moorings were set at the LOTUS site; four for the LOTUS experiment and one, a profiling current meter mooring, for C.S. Draper Labs - MIT. In addition, an engineering mooring was set at 39 deg 30 min N, 70 W. Two XBT sections were made along 70 W between 40 N and 33 N during the trip to and from the LOTUS site. Five CTD stations were also completed in the LOTUS area. Part I of this report is a summary of the major cruise activities and part II presents the hydrographic data (CTD and XBT) collected during the cruise.