A Stochastic Geo-spatiotemporal Bipartite Network to Optimize GCOOS Sensor Placement Strategies

TL;DR

A Geo-SpatioTemporal Bipartite Network (GSTBN) within the stochastic and dynamical environment of the Gulf of Mexico is constructed and optimal placements to expand GCOOS are identified to improve the forecasting outcomes by the HYCOM ocean prediction model.

Abstract

This paper proposes two new measures applicable in a spatial bipartite network model: coverage and coverage robustness. The bipartite network must consist of observer nodes, observable nodes, and edges that connect observer nodes to observable nodes. The coverage and coverage robustness scores evaluate the effectiveness of the observer node placements. This measure is beneficial for stochastic data as it may be coupled with Monte Carlo simulations to identify optimal placements for new observer nodes. In this paper, we construct a Geo-SpatioTemporal Bipartite Network (GSTBN) within the stochastic and dynamical environment of the Gulf of Mexico. This GSTBN consists of GCOOS sensor nodes and HYCOM Region of Interest (RoI) event nodes. The goal is to identify optimal placements to expand GCOOS to improve the forecasting outcomes by the HYCOM ocean prediction model.

Figures (6)

• Figure 1: Computing residuals between time frames
• Figure 2: A snapshot of GSTBN at time $t_0$. (Global view)
• Figure 3: Two temporal snapshots of the GSTBN at times $t_0$ and $t_2$ from same region. (Zoom view)
• Figure 4: Sequence of Temporal Snapshots of the GSTBN with the initial GCOOS sensor configuration
• Figure 5: Sequence of Temporal Snapshots of the GSTBN with the suggested position for a new sensor represented as a green star