The Open UniversitySkip to content

Magma plumbing processes for persistent activity at Poás Volcano, Costa Rica

Rymer, Hazel; Locke, Corinne A.; Brenes, Jorge and Williams-Jones, Glyn (2005). Magma plumbing processes for persistent activity at Poás Volcano, Costa Rica. Geophysical Research Letters, 32(8) L08307.

Full text available as:
PDF (Not Set) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (247kB)
DOI (Digital Object Identifier) Link:
Google Scholar: Look up in Google Scholar


New microgravity data from the active crater of Poás volcano, Costa Rica, collected in 2002-2004 extends the existing dataset to provide a unique 20-year time series. These data show that gravity has decreased monotonically in the north and east of the crater over the last 5 years, whilst it has increased to the west and remained approximately constant in the south. These changes are interpreted in terms of convective recharge within dendritic intrusions beneath the crater, with overall down-welling in the north and up-welling in the west. The data reveal a 5-10 year periodicity in sub-crater mass movement, but overall, the upper part of the conduit system appears to have maintained a state of mass equilibrium.

Item Type: Journal Item
ISSN: 0094-8276
Keywords: microgravity; mass movement; Poás volcano; persistent activity
Academic Unit/School: Other Departments > Other Departments
Other Departments
Item ID: 67
Depositing User: Users 12 not found.
Date Deposited: 10 May 2006
Last Modified: 20 Mar 2019 02:54
Share this page:


Altmetrics from Altmetric

Citations from Dimensions

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU