From 1 - 10 / 55
  • Continuous data recorded by New Zealand's Geomagnetic Observatories EYR, SBA & API, processed at 1-minute and 1-second sampling, and submitted to INTERMAGNET in a standardized file format (IAGA-2002) every hour. The data are preliminary as they are submitted without being cleaned (spikes removed) and baseline (absolute values) corrected. The preliminary 1-minute data are more timely and potentially more complete than the definitive 1-minute data, whereas the 1-minute definitive data goes through a data quality reviewing process with data recorded in one year not being published until the following year. There are no 1-second definitive data being produced. The data can be downloaded via a free web access provided by INTERMAGNET at http://www.intermagnet.org/data-donnee/download-eng.php (Data Type: ‘provisional’). 1-minute data (Sample Rate: ‘minute’): EYR available since 1994, SBA since 1996, and API since 1999. 1-second data (Sample Rate: ‘second’): EYR data available since 2012, SBA since 2012, and API since 2012.

  • 2022 Definitive 1-minute Scott Base (SBA) data is continuous 1-second data recorded by New Zealand's Geomagnetic Observatories SBA in 2022 that was processed at 1-minute sampling, cleaned (spikes removed) and baseline (absolute values) corrected following INTERMAGNET guidelines. The data was submitted to INTERMAGNET in May 2023 and passed the INTERMAGNET reviewing process. DOI https://doi.org/10.21420/axhk-e303 Cite as: Thornton, M., Goodyear, G., Shaw, S. (2022). 2022 Definitive 1-minute Scott Base (SBA) data. GNS Science, INTERMAGNET. https://doi.org/10.21420/axhk-e303

  • Continuous data recorded by New Zealand's Geomagnetic Observatories EYR processed at 1-minute sampling and baseline (absolute values) corrected. The data is being submitted to INTERMAGNET annually (submitted by July 1st for the previous year’s data Jan 1 to 31 Dec). EYR data since 1-Jan-1994 Before the definitive data for each year is being published via INTERMAGNET an international multi-step reviewing process is being applied to ensure international standards are being met. DOI https://doi.org/10.21420/VTW2-AE75 Cite as: GNS Science. (1994). Definitive 1-minute Eyrewell (EYR) data [Data set]. GNS Science, INTERMAGNET. https://doi.org/10.21420/VTW2-AE75

  • 2014 Definitive 1-minute Apia (API) data is continuous 1-second data recorded by New Zealand's Geomagnetic Observatory Apia in 2014 that was processed at 1-minute sampling, cleaned (spikes removed) and baseline (absolute values) corrected. The data was submitted to INTERMAGNET in July 2015 and passed the INTERMAGNET reviewing process. DOI https://doi.org/10.21420/V2NJ-6T19 Cite as: Petersen, T., GNS Science, Samoa Meteorology Division, & USGS. (2015). 2014 Definitive 1-minute Apia (API) data. GNS Science, INTERMAGNET. https://doi.org/10.21420/V2NJ-6T19

  • 2014 Definitive 1-minute Scott Base (SBA) data is continuous 1-second data recorded by New Zealand's Geomagnetic Observatories SBA in 2014 that was processed at 1-minute sampling, cleaned (spikes removed) and baseline (absolute values) corrected. The data was submitted to INTERMAGNET in July 2015 and passed the INTERMAGNET reviewing process. DOI: https://doi.org/10.21420/7DM8-ZM49 Cite as: Petersen, T., & GNS Science. (2015). 2014 Definitive 1-minute Scott Base (SBA) data [Data set]. INTERMAGNET. https://doi.org/10.21420/7DM8-ZM49

  • 2017 Definitive 1-minute Scott Base (SBA) data is continuous 1-second data recorded by New Zealand's Geomagnetic Observatories SBA in 2017 that was processed at 1-minute sampling, cleaned (spikes removed) and baseline (absolute values) corrected. The data was submitted to INTERMAGNET in July 2018 and passed the INTERMAGNET reviewing process. DOI: https://doi.org/10.21420/S2JS-J450 Cite as: Petersen, T., & GNS Science. (2018). 2017 Definitive 1-minute Scott Base (SBA) data [Data set]. INTERMAGNET. https://doi.org/10.21420/S2JS-J450

  • Continuous data recorded by New Zealand's Geomagnetic Observatories API processed at 1-minute sampling and baseline (absolute values) corrected. The data is being submitted to INTERMAGNET annually (submitted by July 1st for the previous year’s data Jan 1 to 31 Dec). API data since 1-Jan-1999 Before the definitive data for each year is being published via INTERMAGNET an international multi-step reviewing process is being applied to ensure international standards are being met. DOI https://doi.org/10.21420/B7GS-DK09 Cite as: GNS Science. (1999). Definitive 1-minute Apia (API) data [Data set]. GNS Science, INTERMAGNET. https://doi.org/10.21420/B7GS-DK09

  • 2020 Definitive 1-minute Eyrewell (EYR) data is continuous 1-second data recorded by New Zealand's Geomagnetic Observatories EYR in 2020 that was processed at 1-minute sampling, cleaned (spikes removed) and baseline (absolute values) corrected. The data was submitted to INTERMAGNET in July 2021 and passed the INTERMAGNET reviewing process. DOI: https://doi.org/10.21420/F459-S796 Cite data as: Thornton, M., Plank, G., & Plank, J. (2021). 2020 Definitive 1-minute Eyrewell (EYR) data [Dataset]. GNS Science, INTERMAGNET. https://doi.org/10.21420/F459-S796

  • Preliminary 1-second and 1-minute Eyrewell (EYR) data are submitted to INTERMAGNET in a standardized file format (IAGA-2002) every hour. The data can be downloaded via a free web access provided by INTERMAGNET at http://www.intermagnet.org/data-donnee/download-eng.php (Data Type: ‘provisional’). 1-minute (Sample Rate: ‘minute’) ‘provisional’ EYR data are available since 1994. 1-second data (Sample Rate: ‘second’) ‘provisional’ EYR data are available since 2012. DOI: https://doi.org/10.21420/APJY-5050 Cite data as: GNS Science. (2022). Preliminary 1-second and 1-minute data from Eyrewell (EYR) [Data set]. INTERMAGNET. https://doi.org/10.21420/APJY-5050

  • We have developed a 2-D/3-D arbitrary lagrangian-eulerian (ALE) finite-element code, SULEC, based on known techniques from literature. SULEC is successful in tackling many of the problems faced by numerical models of lithosphere and mantle processes, such as the combination of viscous, elastic, and plastic rheologies, the presence of a free surface, the contrast in viscosity between lithosphere and the underlying asthenosphere, and the occurrence of large deformations including viscous flow and offset on shear zones. The aim of our presentation is (1) to describe SULEC, and (2) to present a set of analytical and numerical benchmarks that we use to continuously test our code. SULEC solves the incompressible momentum equation coupled with the energy equation. It uses a structured mesh that is built of quadrilateral or brick elements that can vary in size in all dimensions, allowing to achieve high resolutions where required. The elements are either linear in velocity with constant pressure, or quadratic in velocity with linear pressure. An accurate pressure field is obtained through an iterative penalty (Uzawa) formulation. Material properties are carried on tracer particles that are advected through the Eulerian mesh. Shear elasticity is implemented following the approach of Moresi et al. [J. Comp. Phys. 184, 2003], brittle materials deform following a Drucker-Prager criterion, and viscous flow is by temperature- and pressure-dependent power-law creep. DOI: https://doi.org/10.21420/8Z3S-ZZ03 Cite model as: GNS Science. (2012). SULEC geodynamic finite-element code. GNS Science. https://doi.org/10.21420/8Z3S-ZZ03