A new approach to estimating environmental contours has recently been proposed, where the contours are estimated in the original physical space by Monte Carlo simulations from the joint distribution directly rather than applying the Rosenblatt transformation. In this paper, the new and the traditional approach to estimating the contours are presented and the assumptions on which they are based are discussed. The different results given by these two methods are then compared in a number of case studies. Simultaneous probability density functions are fitted to the joint distribution of significant wave height and wave period for selected ocean locations and, for each area, environmental contours are estimated for both methods. The chosen locations are characterised by different wave climates. Thus, the practical consequences of the choice of approach are assessed. Particular attention is given to mixed sea systems, i.e. a combination of wind sea and swell. In these situations, the new approach for environmental contours may fail to identify realistic conditions along some parts of the contours while for other wave conditions the contours are quite similar. The paper also briefly discusses possible ways of amending the new approach to estimating the contours to obtain more realistic conditions all along the contour lines.
Skip Nav Destination
ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
June 8–13, 2014
San Francisco, California, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4542-4
PROCEEDINGS PAPER
Alternative Environmental Contours for Marine Structural Design: A Comparison Study
Elzbieta M. Bitner-Gregersen
Elzbieta M. Bitner-Gregersen
DNV GL, Høvik, Norway
Search for other works by this author on:
Erik Vanem
DNV GL, Høvik, Norway
Elzbieta M. Bitner-Gregersen
DNV GL, Høvik, Norway
Paper No:
OMAE2014-23252, V04AT02A022; 10 pages
Published Online:
October 1, 2014
Citation
Vanem, E, & Bitner-Gregersen, EM. "Alternative Environmental Contours for Marine Structural Design: A Comparison Study." Proceedings of the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. Volume 4A: Structures, Safety and Reliability. San Francisco, California, USA. June 8–13, 2014. V04AT02A022. ASME. https://doi.org/10.1115/OMAE2014-23252
Download citation file:
23
Views
Related Proceedings Papers
Related Articles
Alternative Environmental Contours for Marine Structural Design—A Comparison Study
J. Offshore Mech. Arct. Eng (October,2015)
On the Accuracy of Voluntary Observing Ship’s Records
J. Offshore Mech. Arct. Eng (October,2021)
Seasonal Modeling of Multivariate Distributions of Metocean Parameters With Application to Marine Operations
J. Offshore Mech. Arct. Eng (August,2004)
Related Chapters
Establishing Unmanning Criteria for a Jacket Structure on the NCS
Ageing and Life Extension of Offshore Facilities
Geomatrix Model as New Tool for Improving Oil Spill Surveillance
International Conference on Instrumentation, Measurement, Circuits and Systems (ICIMCS 2011)
Ocean Surface Wind Vector Forecasting Using Support Vector Regression
Intelligent Engineering Systems Through Artificial Neural Networks, Volume 17