Earthquakes' impact on hydrothermal systems may be far-reaching
Article first published online: 19 OCT 2006
©2001. American Geophysical Union. All Rights Reserved.
Eos, Transactions American Geophysical Union
Volume 82, Issue 21, pages 233–236, 22 May 2001
How to Cite
2001), Earthquakes' impact on hydrothermal systems may be far-reaching, Eos Trans. AGU, 82(21), 233–236, doi:10.1029/01EO00127., , , , and (
- Issue published online: 19 OCT 2006
- Article first published online: 19 OCT 2006
Recent work has linked earthquake activity with changes in flow and temperature due to hydrothermal venting at mid-ocean ridges. These intriguing relationships are important motivation for modeling marine hydrothermal systems. However, a re-examination of some earlier vent monitoring data from the Juan de Fuca Ridge, combined with analysis of recently reprocessed SOSUS (SOund Surveillance System) hydrophone data (Figure 1), suggest that such activity may be linked over considerable distances of greater than 200 km and reaction intervals of over a month.
The available observational data are sparse, so the direct association between earthquakes and changes in crustal fluid circulation are difficult to verify. However, the response times and distance scales are consistent with other observations, including earthquakes in land-based settings [Hill et al., 1993] and modeling of flow in porous media [Pruis et al., 2000]. If true, these associations imply that marine hydrothermal systems are extremely complex and may be sensitive to very subtle environmental changes.