Quantitative Surface Evolution of Hydrothermal Edifices at the Endeavour Segment, Juan de Fuca Ridge .

Kwasnitschka, Tom , Juniper, Kim and Kelley, Deborah S. (2017) Quantitative Surface Evolution of Hydrothermal Edifices at the Endeavour Segment, Juan de Fuca Ridge . [Talk] In: AGU Chapman Conference on Submarine Volcanism. , 29.01.-03.02.2017, Hobart, Tasmania, Australia .

Full text not available from this repository.

Abstract

The power of quantitative visual observations has yet to be brought to bear on most aspects of seafloor volcanic studies. Yet changes in volume, appearance and colonisation of magmatic and hydrothermal constructs (vents, flows, chimneys, microbial mats etc.) are direct consequences of changes in the magmatic system and can provide quantitative estimates of heat and material transport not available through more localized observation or sampling.

Photogrammetric techniques applied to dedicated ROV imagery allow the reconstruction of a centimeter-scale, fully three dimensional model of seafloor features. On E/V Nautilus Leg 069/2 during the summer of 2015, this method was applied to major vents of the Mothra, Main Endeavour and High Rise sites at the Endeavour Segment, Juan de Fuca Ridge. Together with previous surveys at Mothra a) in 1997 (Yoerger et al., 2000) and b) in 2014 (see graphical abstract) as well as imagery collected during the annual Ocean Networks Canada servicing dives at all sites, we are able to construct a time series of vent development including sulfide buildup, erosion and changes in the habitat. For the first time, this can be done on the grounds of a fully georeferenced, quantitative model.

Document Type: Conference or Workshop Item (Talk)
Keywords: Quantitative Surface Evolution, Hydrothermal Edifices, Endeavour Segment, Juan de Fuca Ridge
Research affiliation: OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-MUHS
Date Deposited: 10 Apr 2017 10:12
Last Modified: 10 Apr 2017 10:12
URI: https://oceanrep.geomar.de/id/eprint/37137

Actions (login required)

View Item View Item