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Aaron Marburg

Senior Electrical/Computer Engineer

Email

amarburg@apl.washington.edu

Phone

206-685-8461

Biosketch

Dr. Marburg's research focuses on the development of robotic platforms for ocean exploration and science, with a focus on perception, situational awareness, and mission planning. He also has a background in remote sensing, photogrammetry and precision navigation, and a strong interest in human-machine interfaces, and data and metadata management. He has over 15 years experience in electrical and software design for robotics, scientific instrumentation and high-performance computing. Dr. Marburg joined APL-UW as a SEED postdoctoral researcher in 2015 after completing his Ph.D. at the University of Canterbury in Christchurch, New Zealand.

Department Affiliation

Ocean Engineering

Education

B.S. Engineering, Swarthmore College, 1998

M.S. Aeronautical & Astronautical Engineering, Stanford University, 2004

Ph.D. Electrical & Computer Engineering, Canterbury University, 2015

Publications

2000-present and while at APL-UW

Using the OOI cabled array HD camera to explore geophysical and oceanographic problems at Axial Seamount

Crone, T.J., F. Knuth, and A. Marburg, "Using the OOI cabled array HD camera to explore geophysical and oceanographic problems at Axial Seamount," AGU Fall Meeting, 12-16 December, San Francisco, CA, OS41C-1970 (AGU, 2016).

More Info

15 Dec 2016

A broad array of Earth science problems can be investigated using high-definition video imagery from the seafloor, ranging from those that are geological and geophysical in nature, to those that are biological and water-column related. A high-definition video camera was installed as part of the Ocean Observatory Initiative's core instrument suite on the Cabled Array, a real-time fiber optic data and power system that stretches from the Oregon Coast to Axial Seamount on the Juan de Fuca Ridge. This camera runs a 14-minute pan-tilt-zoom routine 8 times per day, focusing on locations of scientific interest on and near the Mushroom vent in the ASHES hydrothermal field inside the Axial caldera. The system produces 13 GB of lossless HD video every 3 hours, and at the time of this writing it has generated 2100 recordings totaling 28.5 TB since it began streaming data into the OOI archive in August of 2015.

Because of the large size of this dataset, downloading the entirety of the video for long timescale investigations is not practical. We are developing a set of user-side tools for downloading single frames and frame ranges from the OOI HD camera raw data archive to aid users interested in using these data for their research. We use these tools to download about one year's worth of partial frame sets to investigate several questions regarding the hydrothermal system at ASHES, including the variability of bacterial "floc" in the water-column, and changes in high temperature fluid fluxes using optical flow techniques. We show that while these user-side tools can facilitate rudimentary scientific investigations using the HD camera data, a server-side computing environment that allows users to explore this dataset without downloading any raw video will be required for more advanced investigations to flourish.

Automated QA/QC and time series analysis on OOI high-definition video data

Knuth, F., L. Belabassi, L. Garzio, M. Smith, M. Vardaro, and A. Marburg, "Automated QA/QC and time series analysis on OOI high-definition video data," Proc., MTS/IEEE OCEANS Conference, 19-23 September, Monterey, CA, doi:10.1109/OCEANS.2016.7761396 (IEEE, 2016).

More Info

1 Dec 2016

The Ocean Observatories Initiative's (OOI) Cabled Array (CA) is delivering high-definition video data since August 2015 via fiber optic cable from a statically positioned SubC 1Cam HD (CAMHD) video camera, deployed at the Mushroom hydrothermal vent in the Axial Seamount Hydrothermal Expeditions (ASHES) Field off the coast of Oregon (lat 45° 56.0186'N, long 130° 00.8185'W, depth 1,542 m). Over 20 TB of video data have been archived and are publically available via the OOI raw data repository. The CAMHD runs a 14-minute pan/tilt/zoom routine at eight even intervals throughout the day, producing 13GB of uncompressed HD video each time, with a focus on locations of scientific interest across the vent. Due to the amount of video data already collected, and the anticipated data volumes over the life of the project, automating analyses on the quality and consistency of these data, as well as developing tools for the automatic generation of value-added data products, is critical. In this paper we present results from automated analysis of CAMHD video data files for quality assurance purposes. Objectives include ensuring consistent file size, duration and naming convention on the archive, as well as producing time-series on frames of interest to analyze change in content or image quality over time. For example, we identified that an issue in the video streaming software, which has since been resolved, truncated ~25% of existing mp4 files on the archive. Analyses such as this allow scientists to rapidly understand the structure and quality of video data on the archive, laying the groundwork to create an array of customized analysis routines that meet a range of scientific needs.

Axial Seamount – wired and restless: A cabled submarine network enables real-time, tracking of a Mid-Ocean Ridge eruption and live video of an active hydrothermal system Juan de Fuca Ridge, NE Pacific

Delaney, J.R., D.S. Kelley, A. Marburg, M. Stoermer, H. Hadaway, K. Juniper, and F. Knuth, "Axial Seamount – wired and restless: A cabled submarine network enables real-time, tracking of a Mid-Ocean Ridge eruption and live video of an active hydrothermal system Juan de Fuca Ridge, NE Pacific," Proc., MTS/IEEE OCEANS, 19-23 September, Monterey, CA, doi:10.1109/OCEANS.2016.7761484 (IEEE, 2016).

More Info

1 Dec 2016

The most scientifically diverse and technologically advanced component of the National Science Foundations' $386M investment in the Ocean Observatories Initiative (OOI), involves 900 kilometers of high power and bandwidth electro-optical cable extending from Pacific City, OR, across active portions of the Juan de Fuca tectonic plate and up into the overlying ocean. Completed on time and under budget in October, 2014, this mesoscale fiber-optic sensor array enables real-time, high-bandwidth, 2-way communication with seafloor and water-column sensor networks across: 1) a portion of the global Mid-Ocean Ridge (MOR), 2) a section of the Cascadia Subduction Zone, and, 3) a cross-section of the California Current, a component of the North Pacific Gyre. Much of the data generated from >130 fiber-linked instruments has become available for scientific, educational and public user communities over the past 6 to 12 months, via the OOI Cyber-infrastructure (http://oceanobservatories.org/data-portal/). Since the OOI Cabled System has been in use and streaming live data to shore, two major developments have emerged that bear on undersea volcano-hydrothermal systems: 1) The 2015 submarine eruption of Axial Seamount was documented in a unique fashion by 20 remote, hardwired instruments distributed across the floor of the summit caldera. 2) Live, streaming video of an active hydrothermal system within one of the vent fields inside the caldera reveals subtle changes taking place in the Axial system.

More Publications

Acoustics Air-Sea Interaction & Remote Sensing Center for Environmental & Information Systems Center for Industrial & Medical Ultrasound Electronic & Photonic Systems Ocean Engineering Ocean Physics Polar Science Center
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