Access to Geodetic Imaging Products through GeoGateway Analysis, Modeling, and Response Tools

Andrea Donnellan, Jay W. Parker, Robert A. Granat, Michael B. Heflin, Marlon E. Pierce, Jun Wang, John B. Rundle, & Lisa Grant Ludwig

Published August 12, 2016, SCEC Contribution #6687, 2016 SCEC Annual Meeting Poster #343

GeoGateway is a web map analysis, modeling, and response tool to allow users to efficiently find and use NASA geodetic imaging data products. GeoGateway tools steer users to relevant products using automated feature extraction, manual search tools, and data quality metrics. GeoGatway goals are to a) simplify the discovery of geodetic imaging products; b) enable researchers to explore and integrate data products through online or offline analysis; and c) allow researchers to easily share, publish, and collaborate on results of these online experiments. GeoGateway increases the value of existing geodetic imaging products to researchers through automated machine learning and computer vision techniques to identify features, anomalies, and artifacts bridging the gap between production and end-use of data products. Individual data types are far more powerful when they are used in conjunction with other products to test a hypothesis. Automated and manual approaches are be available for the user through the interface. Users can perform time and geographically limited search for products. Time windowing is particularly important because crustal deformation velocities vary over time as earthquakes and postseismic deformation occur, causing offsets and rate changes. Statistics on GPS and UAVSAR data will enable users to separate data artifacts and errors from geophysical signals. Heterogeneous crustal deformation data come in the form of GPS position time series and radar or optical maps of components of surface deformation. Earthquakes and postseismic response complicate the already heterogeneous data by adding episodic jumps and changing rates of surface deformation to the products. Data volumes will become even larger and the surface deformation data more complicated when NASA launches NISAR in late 2021. GeoGateway components are open source and available for reuse by other projects and researchers. The emphasis on facilitating routine workflow promotes the reuse of techniques necessary to advance earthquake research.

Key Words
Geodetic Imaging, earthquake, GeoGateway, UAVSAR, GPS, InSAR

Citation
Donnellan, A., Parker, J. W., Granat, R. A., Heflin, M. B., Pierce, M. E., Wang, J., Rundle, J. B., & Grant Ludwig, L. (2016, 08). Access to Geodetic Imaging Products through GeoGateway Analysis, Modeling, and Response Tools. Poster Presentation at 2016 SCEC Annual Meeting.

Related Projects & Working Groups
Computational Science (CS)