John Beavan
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View article: Evidence for orbital forcing of Middle Cambrian peritidal cycles: Wah Wah range, south-central Utah
Evidence for orbital forcing of Middle Cambrian peritidal cycles: Wah Wah range, south-central Utah Open
We have applied a new method (gamma method) for constructing high-resolution age models to peritidal cycles in the Middle Cambrian Pierson Cove Formation (13 cycles) and the Trippe Limestone (40 cycles) exposed in the Wah Wah range, south-…
View article: Are cyclic sediments periodic? Gamma analysis and spectral analysis of Newark Supergroup lacustrine strata
Are cyclic sediments periodic? Gamma analysis and spectral analysis of Newark Supergroup lacustrine strata Open
Methodologies are suggested for the analysis of cyclic sediments. These include (1) linear analysis to determine whether cycles are of approximately constant duration and whether the relation between thickness and time is facies dependent …
View article: Interim Report on Studies of the Mw ~7.9 Earthquake of 3 May 2006, Kingdom of Tonga
Interim Report on Studies of the Mw ~7.9 Earthquake of 3 May 2006, Kingdom of Tonga Open
The very large and rare Mw ~7.9 Earthquake of 3 May 2006 in the Kingdom of Tonga aroused great interest among both Tongan scientists and their colleagues in Australia, New Zealand, and the United States. To investigate the earthquake we fo…
View article: From geophysics to geodetic datum: updating the NZGD2000 deformation model
From geophysics to geodetic datum: updating the NZGD2000 deformation model Open
The deformation model is a critical component of New Zealand Geodetic Datum 2000 (NZGD2000), the official reference frame for New Zealand. The model is used to manage the relationship between the NZGD2000 and the global International Terre…
View article: New Zealand GPS velocity field: 1995–2013
New Zealand GPS velocity field: 1995–2013 Open
We collate nearly two decades of campaign GPS data gathered at over 900 sites throughout New Zealand to release a New Zealand nationwide GPS velocity field. The data span the entire North and South islands of New Zealand with a typical spa…