Acoustic Scintillation - Monitoring Hydrothermal Plumes
Daniela Di Iorio
I have worked at the Main Endeavour vent field to quantify the vertical velocity and turbulence levels of the hydrothermal plume at Dante, using both specialized acoustic instrumentation and using large eddy simulations with Bill Lavelle. I am presently funded by the NSF to install a reciprocal acoustic scintillation system at the Endeavour junction box of the ONC NEPTUNE cabled observatory, which is currently scheduled for deployment in 2016.This specialized instrument will be designed to monitor both the mean and turbulent properties of the hydrothermal plume above the North Tower of Grotto.
My interest in this workshop is to see if my self-contained instrument (battery operated/internally logging) that I have used in the past at Dante could be installed at Axial to see how the hydrothermal venting may be changing as a result of these signs of possible eruption. This instrument would add to the suite of instruments monitoring the caldera and would give valuable information on high temperature focused flow variability and hydrothermal plume dynamics. My instrument is capable of logging data for three months and would be able to identify changes in the vertical flow and temperature fluctuations as a function of time. Deployment of this system would require resources to ready instrumentation and moorings, and time with a research vessel and ROV. I would be very interested in finding collaborators willing to submit a rapid type of proposal in order to make such a deployment happen.
2015 – Professor, Dept of Marine Sciences, University of Georgia, Athens GA
2007-2015 Associate Professor, Dept of Marine Sciences, University of Georgia, Athens GA.
1999-2007 Assistant Professor, Dept of Marine Sciences, University of Georgia, Athens GA.
Five Relevant Publications
J.W. Lavelle, D. Di Iorio and P. Rona (2013). `A turbulent convection model with an
observational context for a deep-sea hydrothermal plume in a time-variable cross-flow’. J.
Geophys Res, 118, 1 – 16.
G. Xu and D. Di Iorio, (2012). ‘Deep Sea Hydrothermal Plumes and their Interaction with
Tidal Flows’. Geochem, Geophys, Geosys., 13, Q0AJ01.
D. Di Iorio, J.W Lavelle, P. Rona, K. Bemis, G. Xu, L. Germanovich, R. Lowell, G. Genc,
(2012). `Measurements and Models of Heat flux and Plumes from Hydrothermal Discharges
near the Deep Sea Floor’, Oceanography, 25(1):108-119,
R. Camilli, D. Di Iorio, A. Bowen, C.M. Reddy, A.H. Techt, D.R. Yoerger, L.L. Whitcomb, J.
Seewald, S.P. Sylva, and J. Fenwick, (2011). ‘Acoustic measurement of the Deepwater
Horizon Macondo well flow rate’, Proc. Nat. Acad. Sci, doi: 10.1073/pnas.1100385108.
G. Xu and D. Di Iorio, (2011). ‘The relative effects of particles and turbulence on acoustic
scattering from deep-sea hydrothermal vent plumes’. J. Acoust. Soc. Am., 130(4),