Visual Study of the Benguela Upwelling System using Pathline Predicates

Nardini, Pascal; Böttinger, Michael; Scheuermann, Gerik; Schmidt, Martin

Visual Study of the Benguela Upwelling System using Pathline Predicates

Files

019-023.pdf (15.38 MB)

envirvis20170105-file1.mp4 (26.76 MB)

Date

2017

Authors

Nardini, Pascal
Böttinger, Michael
Scheuermann, Gerik
Schmidt, Martin

Publisher

The Eurographics Association

Abstract

Due to the nutrient-rich water transported to the upper layer of the ocean, coastal upwelling systems are regions especially important for marine life and fishery. In this work, we focus on a visual analysis of the spatio-temporal structure of the Benguela upwelling system using pathline predicates. Based on the 3D flow field from an ocean model simulation, we first derive space- filling trajectories covering the full model grid. From these, we select and visualize pathlines related to upwelling. In a second step, we derive a 3D scalar field representing the pathline density, which is visualized using volume rendering techniques. Further analyses of the pathlines show a distinct annual cycle in the upwelling activity, which fits well to observation-based analyses found in literature.

        @inproceedings{10.2312:envirvis.20171099
,
booktitle = {Workshop on Visualisation in Environmental Sciences (EnvirVis)
},
editor = {Karsten Rink and Ariane Middel and Dirk Zeckzer and Roxana Bujack
},
title = {{Visual Study of the Benguela Upwelling System using Pathline Predicates
}},
author = {Nardini, Pascal and 
Böttinger, Michael and 
Scheuermann, Gerik and 
Schmidt, Martin
},
year = {2017
},
publisher = {The Eurographics Association
},
ISBN = {978-3-03868-040-6
},
DOI = {10.2312/envirvis.20171099
}
}