exploring the sea floor with rovs and auvs
DESCRIPTION
Norwegian Mapping Authority Visit. Exploring the sea floor with ROVs and AUVs. Alejandro Hinojosa CICESE. Hosting: Maritime Alliance San Dego Ca., January 16 th 2014. CICESE. Mexican government research center Located in Ensenada, Baja California 100km south of San Diego 41 years old - PowerPoint PPT PresentationTRANSCRIPT
Exploring the sea floor with ROVs and AUVs
Alejandro Hinojosa
CICESE
Norwegian Mapping Authority Visit
Hosting: Maritime Alliance San Dego Ca., January 16th 2014
CICESE
• Mexican government research center
• Located in Ensenada, Baja California 100km south of San Diego
• 41 years old
• One of its missions: do basic and applied research in ocean and earth sciences.
• Long time collaborations with SIO/Scripps, MBARI, WHOI,….
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CICESE
Participation in 3 Sea Floor Explorations in Mexican EEZ
Scripps Institution of Oceanography(SIO), UCSD•PI Peter Lonsdale
• 2008 ROCA (May 1-29), R/V Atlantis (WHOI) ROV Jason/Medea• 2012 WOBA(Oct 13-21), R/V Melville(SIO), ROV Gizmo(Triton)
Monterrey Bay Aquarium Research Institute (MBARI)• PIs: Charles K. Paull, David A. Clague, David W. Caress, Hans
Thomas• 2012 (Spring) Two Ship expedition:
• R/V Western Flyer, ROV Doc Ricketts• R/V Zephyr, AUV (detail sea floor mapping)
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ROV and AUV dive sites in theGulf of California and West ofBaja California
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Control Van Jason/Medea
•Navigator •Engineer •Scientist •Arm Operator • Students: Log, DVDs•4hrs shifts•16-22 hrs durationNMA visit Exploring Sea Floor 7
Lower Delfin Basin, Gulf of CaliforniaROV tracks, depth in m
T4 in next slide
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Track 4 of ROV on Volcanic Knolls in Lower Delfin Basin, GC
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3D reconstruction from images of moving camera, massive point matching, photogrammetric techniques.
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Launching MBARI’s AUV from R/V Zephyr
AUV’s operation scheme•Multibeam bathymetry•Side scan •Bottom profiler
MBARI’s (AUV) on Zephyr R/V
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Doug Conlin,Jim Boedecker,Paul Ban
Rigorous mission planning for AUV, based on previous bathymetries. Programmed AUV path (50 m above gnd)
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Hydrothermal vents discovered in Alarcon rise by high resolution bathymetry from
MBARI’s AUV
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Hydrodrothermal chimneys discovered in Alarcon rise by high resolution bathymetry
from MBARI’s AUV (2012)
3-D visualization of the AUV's individual sonar soundings of the same area. This visualization is particularly effective for imaging the hydrothermal chimneys (Dave Caress, MBARI)
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Final Comments• Sea floor exploration is a 3D endeavor • Previous multibeam bathymetry is critical for
mission planning• ROV and AUV’s Log is the main source of
spatial (3D) and instrument data• Most of data collected is not GIS ready, it has to
be massaged • Collaborations and technology has enabled us
to explore and map the sea floor, the unexplored final frontier on Earth.
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