predicts the drift of each ice- 

 berg and another which pre- 

 dicts the deterioration of each. 

 The drift prediction program 

 uses a historical current file 

 which is modified weekly us- 

 ing satellite-tracked ocean 

 drifting buoy data, thus taking 

 into account local, short-term, 

 current fluctuations. Murphy 

 and Anderson (1985)describe 

 and evaluate the IIP drift 

 model. 



The IIP iceberg dete- 

 rioration program uses daily 

 sea surface temperature and 

 wave height information from 

 the U.S. Navy Fleet Numeri- 

 cal Oceanography Center 

 (FNOC) to predict the melt of 

 icebergs. Anderson (1983) 

 and Hanson (1987) describe 

 the IIP deterioration model in 

 detail. It is the combined abil- 

 ity of the SLAR to detect ice- 

 bergs in all weather and MP's 

 computer models to estimate 

 iceberg drift and deterioration 

 which enables IIP to schedule 

 aerial iceberg surveys every 

 other week rather than every 

 week. 



Ten satellite-tracked 

 ocean drifting buoys were de- 

 ployed to provide operational 

 data for HP's iceberg drift 

 model. Five buoys were the 

 standard size drifting buoys 

 IIP has been deploying for fif- 

 teen years. The other five 

 were smaller drifting buoys 



which IIP evaluated during an 

 oceanographic cruise and 

 then deployed operationally 

 from the cmise vessel. All 

 buoys were equipped with 

 temperature sensors, and two 

 of the standard buoys were 

 also equipped with baromet- 

 ric pressure sensors. The U.S. 

 Naval Oceanographic Com- 

 mand provided the funding for 

 these barometric sensors. 

 Drift data from the buoys are 

 discussed in Appendix B. 



During the 1990 sea- 

 son, llPoperationally deployed 

 35 Air-deployable expendable 

 BathyThermograph (AXBTs). 

 The AXBT measures tem- 

 perature with depth and trans- 

 mits the data back to the air- 

 craft. Temperature data from 

 the AXBTs were sent to the 

 Canadian Meteorological and 

 Oceanographic Center 

 (METOC) in Halifax, Nova 

 Scotia, Canada, the U.S. Na- 

 val Eastern Oceanography 

 Center(NEOC) in Norfolk, Vir- 

 ginia, and FNOC for use as 

 inputs into ocean temperature 

 models. IIP directly benefits 

 from its AXBT deployments 

 by having improved ocean 

 temperature data provided to 

 its iceberg deterioration model. 

 To further enhance the quality 

 of environmental data used in 

 its iceberg models, IIP also 

 provided weekly drifting buoy 

 sea surface temperature 

 (SST) and drift histories and 



SLAR ocean feature analyses 

 to METOC and NEOC for use 

 in water mass and SST analy- 

 ses. 



IIP conducted an 

 oceanographic cruise aboard 

 the USCGC SPAR (WLB 403) 

 between 8 and 23 June 1990 

 off the Grand Banks of New- 

 foundland. The objectives of 

 the cnjise were: 1 ) to conduct 

 an operational evaluation of 

 mini-TOD's for use as current- 

 measuring devices, and 2) to 

 determine the drift errors of 

 the full-sized TOD's IIP uses. 

 The results will be published 

 in a U. S. Coast Guard Re- 

 search Development Center 

 Technical or IIP Technical 

 Report. 



On April 13, 1990, IIP 



paused to remember the 78^*^ 

 anniversary of the sinking of 



the RMS TITANIC. During an 



ice reconnaissance patrol, two 



memorial wreaths were placed 



near the site of the sinking to 



commemoratethe nearly 1 500 



lives lost. 



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