Fluid flow and sound generation at hydrothermal vent fields. Doctoral thesis
Several experiments in this thesis examine methods to measure and monitor fluid flow from hydrothermal vent fields. Simultaneous velocity temperature, and conductivity data were collected in the convective flow emanating from a hydrothermal vent field located on the East Pacific rise. The horizontal profiles obtained indicate that the flow field approaches an ideal plume in the temperature and velocity distribution. Such parameters as total heat flow and maximum plume height can be estimated using either the velocity or the temperature information. The results of these independent calculations are in close agreement, yielding a total heat capacity and volume changes slightly alter the calculations applied to obtain these values. In Guaymas Basin, a twelve day time series of temperature data was collected from a point three centimeters above a diffuse hydrothermal flow area. Using concurrent tidal gauge data from the town of Guaymas it is shown that the effects of tidal currents can be strong enough to dominate the time variability of a temperature signal at a fixed point in hydrothermal flow and are a plausible explanation for the variations seen in the Guaymas Basin temperature data. The increase in power due to convected flow inhomogeneities, however, was lower in the near field than expected. Indirect evidence of hydrothermal sound fields showing anomalous high power and low frequency noise associated with vents is due to processes other than jet noise.
- Research Organization:
- Woods Hole Oceanographic Institution, MA (USA)
- OSTI ID:
- 6956153
- Report Number(s):
- AD-A-218651/8/XAB; WHOI-88-21
- Resource Relation:
- Other Information: Thesis
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of large, autotrophic Beggiatoa spp. abundant at hydrothermal vents of the Guaymas Basin
Chemistry of submarine hydrothermal solutions at 21 degree north, East Pacific Rise and Guaymas Basin, Gulf of California. Doctoral thesis
Related Subjects
HYDROTHERMAL SYSTEMS
FLUID FLOW
PACIFIC OCEAN
CONVECTION
HEAT TRANSFER
HEIGHT
JETS
NATURAL STEAM
PLUMES
SIGNALS
SOUND WAVES
SPECIFIC HEAT
THERMAL CONDUCTIVITY
TIDE
TIME-SERIES ANALYSIS
VARIATIONS
VELOCITY
VENTS
VOLUME
DIMENSIONS
ENERGY SYSTEMS
ENERGY TRANSFER
FLUIDS
GEOTHERMAL FLUIDS
GEOTHERMAL SYSTEMS
MASS TRANSFER
MATHEMATICS
PHYSICAL PROPERTIES
SEAS
STEAM
SURFACE WATERS
THERMODYNAMIC PROPERTIES
150200* - Geology & Hydrology of Geothermal Systems