Shear wave velocity variation across the Taupo Volcanic Zone, New Zealand, from receiver function inversion
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Abstract
The Taupo Volcanic Zone (TVZ), New Zealand is a region characterized by very high magma eruption rates and extremely high heat flow, which is manifest in high-temperature geothermal waters. The shear wave velocity structure across the region is inferred using non-linear inversion of receiver functions, which were derived from teleseismic earthquake data. Results from the non-linear inversion, and from forward synthetic modelling, indicate low S velocities at ∼6–16 km depth near the Rotorua and Reporoa calderas. We infer these low-velocity layers to represent the presence of high-level bodies of partial melt associated with the volcanism. Receiver functions at other stations are complicated by reverberations associated with near-surface sedimentary layers. The receiver function data also indicate that the Moho lies between 25 and 30 km, deeper than the 15 ± 2 km depth previously inferred for the crust–mantle boundary beneath the TVZ.
Suggested Citation
Bannister, S., Bryan, C., and Bibby, H., 2004, Shear wave velocity variation across the Taupo Volcanic Zone, New Zealand, from receiver function inversion: Geophysical Journal International, v. 159, no. 1, p. 291-310, https://doi.org/10.1111/j.1365-246X.2004.02384.x.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Shear wave velocity variation across the Taupo Volcanic Zone, New Zealand, from receiver function inversion |
| Series title | Geophysical Journal International |
| DOI | 10.1111/j.1365-246X.2004.02384.x |
| Volume | 159 |
| Issue | 1 |
| Year Published | 2004 |
| Language | English |
| Publisher | Oxford Academic |
| Contributing office(s) | Volcano Hazards Program |
| Description | 20 p. |
| First page | 291 |
| Last page | 310 |
| Country | New Zealand |
| Other Geospatial | Taupo volcanic zone |