Ocean feature models - their use and effectiveness in ocean acoustic forecasting

Details Ocean feature models - their use and effectiveness in ocean acoustic forecasting Ocean feature models - their use and effectiveness in ocean acoustic forecasting

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997angeo..15..101s&link_type=abstract

Annales Geophysicae, vol. 15, Issue 1, pp.101-112

Physics

Scientific paper

The aim of this paper is to test the effectiveness of feature models in ocean acoustic forecasting. Feature models are simple mathematical representations of the horizontal and vertical structures of ocean features (such as fronts and eddies), and have been used primarily for assimilating new observations into forecasts and for compressing data. In this paper we describe the results of experiments in which the models have been tested in acoustic terms in eddy and frontal environments in the Iceland Faeroes region. Propagation-loss values were obtained with a 2D parabolic-equation (PE) model, for the observed fields, and compared to PE results from the corresponding feature models and horizontally uniform (range-independent) fields. The feature models were found to represent the smoothed observed propagation-loss field to within an rms error of 5 dB for the eddy and 7 dB for the front, compared to 10-15-dB rms errors obtained with the range-independent field. Some of the errors in the feature-model propagation loss were found to be due to high-amplitude `oceanographic noise\' in the field. The main conclusion is that the feature models represent the main acoustic properties of the ocean but do not show the significant effects of small-scale internal waves and fine-structure. It is recommended that feature models be used in conjunction with stochastic models of the internal waves, to represent the complete environmental variability.

Affiliated with

Also associated with

No associations

Rating

Ocean feature models - their use and effectiveness in ocean acoustic forecasting does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ocean feature models - their use and effectiveness in ocean acoustic forecasting, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ocean feature models - their use and effectiveness in ocean acoustic forecasting will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1784960