Zobrazeno 1 - 10
of 99
pro vyhledávání: '"A J Biggin"'
Autor:
Y. A. Engbers, D. Thallner, R. K. Bono, C. J. Sprain, M. J. Murray, K. Bristol, B. Handford, T. Torsvik, A. J. Biggin
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 25, Iss 6, Pp n/a-n/a (2024)
Abstract Paleosecular variation analysis is a primary tool for characterizing ancient geomagnetic behavior and its evolution through time. This study presents a new high‐quality directional data set, paleosecular variation of the Paleogene (PSVP),
Externí odkaz:
https://doaj.org/article/0f247296b2c94ffea27bdd5e8a51569c
Autor:
Mark W. Hounslow, Andrew J. Biggin, Pedro Cózar, Ian D. Somerville, Tereza Kamenikova, Courtney J. Sprain
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 25, Iss 4, Pp n/a-n/a (2024)
Abstract The pattern of geomagnetic polarity changes during the Early Carboniferous (Mississippian) is not known in detail. This information sparsity is addressed by determining a magnetostratigraphy from the late Asbian (late Visean at ∼333 Ma) in
Externí odkaz:
https://doaj.org/article/1cf7b60ae69d47ee9339a6f5576822b4
Publikováno v:
Geoscience Communication, Vol 5, Pp 55-66 (2022)
Palaeomagnetism is a relatively unknown part of Earth sciences that is not well integrated into the school curriculum in the UK. Throughout recent years, there has been a decline in the number of Earth science students in the UK. In 2018 and 2019, we
Externí odkaz:
https://doaj.org/article/d49f3e392f6c4b138a8712a0427f2795
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-10 (2021)
Abstract High-quality data are vital to the research field of paleointensity, which has long suffered from poor-quality and/or sparse data. Previous paleointensity work has established that repeatedly heating specimens increases the opportunity for t
Externí odkaz:
https://doaj.org/article/bc9b33f08812408c9bc1f5f0fecdaa00
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 23, Iss 8, Pp n/a-n/a (2022)
Abstract Statistical studies of paleosecular variation (PSV) are used to infer the structure and behavior of the geomagnetic field. This study presents a new database, paleosecular variation of the Miocene (PSVM), of high‐quality directional data f
Externí odkaz:
https://doaj.org/article/ac6b7ef74b7244c6972d768270495d69
Autor:
Andrew J. Biggin, Richard K. Bono, Domenico G. Meduri, Courtney J. Sprain, Christopher J. Davies, Richard Holme, Pavel V. Doubrovine
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
This study describes how the geomagnetic axial dipole dominance of Earth’s magnetic field remained stable through large parts of the geological time. Since other characteristics of the geomagnetic field have changed substantially on the same timesc
Externí odkaz:
https://doaj.org/article/4c5ef146fe514074b414ae9614878704
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 22, Iss 11, Pp n/a-n/a (2021)
Abstract Studying paleosecular variation (PSV) can provide unique insights into the average morphology of the geomagnetic field and the operation of the geodynamo. Although recent studies have expanded our knowledge of paleomagnetic field behavior th
Externí odkaz:
https://doaj.org/article/5acc753add9c471283edfbe0c9aad9b3
Autor:
Wellington P. deOliveira, Gelvam A. Hartmann, Filipe Terra‐Nova, Daniele Brandt, Andrew J. Biggin, Yael A. Engbers, Richard K. Bono, Jairo F. Savian, Daniel R. Franco, Ricardo I. F. Trindade, Thiago R. Moncinhatto
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 22, Iss 10, Pp n/a-n/a (2021)
Abstract Investigations into long‐term geomagnetic variations provide useful information regarding paleomagnetic field behavior. In this study, we assess the latitudinal structure of paleosecular variation (PSV) and the time‐averaged field (TAF)
Externí odkaz:
https://doaj.org/article/1be9d051522a424ca9d86694e2de11a3
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 22, Iss 10, Pp n/a-n/a (2021)
Abstract The state of the geomagnetic field throughout the Precambrian era is largely unknown. Approximately 8% of global paleointensity records account for ∼4 billion years of Earth history. Despite this severe sparsity, the data are used to const
Externí odkaz:
https://doaj.org/article/b876b426a7c14f5f999219dcac6f1d86
Publikováno v:
Frontiers in Earth Science, Vol 9 (2021)
Palaeointensity information enables us to define the strength of Earth’s magnetic field over geological time, providing a window into Earth’s deep interior. The difficulties in acquiring reliable measurements are substantial, particularly from ol
Externí odkaz:
https://doaj.org/article/8e2a55aecd2d4cea9531234642bd4f83