Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7706
Authors: D'Agostino, N.* 
McKenzie, D.* 
Title: Convective support of long-wavelength topography in the Apennines (Italy)
Journal: Terra nova 
Series/Report no.: 5/11(1999)
Publisher: Wiley-Blackwell
Issue Date: Oct-1999
DOI: 10.1046/j.1365-3121.1999.00252.x
URL: http://onlinelibrary.wiley.com/doi/10.1046/j.1365-3121.1999.00252.x/abstract
Keywords: Dynamic Topography
Gravity
Apennines
Subject Classification04. Solid Earth::04.03. Geodesy::04.03.03. Gravity and isostasy 
Abstract: Two different free-air gravity datasets from the Apennines have been analysed in the frequency domain to investigate the mechanisms of support of topography. At short wavelength (λ<150 km) the best fit between the observed and the calculated admittance gives a value of the elastic thickness of 3.7 km. The observed behaviour of the admittance at larger wavelengths (λ>150 km) shows that such topography is not supported by elastic stresses in the lithosphere but is dynamically supported by mantle convection. The distribution of gravity anomalies and topography suggests that the mantle is rising beneath the main topographic bulge of the Apennines and that this flow is maintained by buoyancy forces, rather than being driven by movement of the subducted slab.
Appears in Collections:Article published / in press

Files in This Item:
File Description SizeFormat Existing users please Login
dagostino_Mckenzie_terranova1999.pdf480.98 kBAdobe PDF
Show full item record

Page view(s) 5

428
Last Week
0
Last month
3
checked on Jan 23, 2021

Download(s) 50

142
checked on Jan 23, 2021

Google ScholarTM

Check

Altmetric