Magnetic Anomaly Grid and Associated Uncertainty From Marine Trackline Data: The Caribbean Alternative Navigation Reference Experiment (CANREx)
Abstract Crustal magnetic anomaly maps over oceanic regions are based largely on marine trackline surveys. These surveys, collected from the 1950s to the present, span a wide range of data quality and reliability. We discuss a methodology for constructing grids from these data with associated cell b...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Geophysical Union (AGU)
2023-11-01
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| Series: | Earth and Space Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2023EA002958 |
| _version_ | 1797448940260425728 |
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| author | R. W. Saltus A. Chulliat B. Meyer M. Bates A. Sirohey |
| author_facet | R. W. Saltus A. Chulliat B. Meyer M. Bates A. Sirohey |
| author_sort | R. W. Saltus |
| collection | DOAJ |
| description | Abstract Crustal magnetic anomaly maps over oceanic regions are based largely on marine trackline surveys. These surveys, collected from the 1950s to the present, span a wide range of data quality and reliability. We discuss a methodology for constructing grids from these data with associated cell by cell estimates of grid uncertainty. The method is tested with a modern airborne survey for a representative region in the eastern Caribbean. The results are promising, producing an uncertainty estimate that is accurate to one standard deviation for the test area. As magnetic anomaly maps and grids are increasingly applied as constraints for geologic interpretation as well as for alternative navigation (e.g., navigation by magnetic field patterns in the absence of GPS), it is important to quantify the accuracy of these maps. |
| first_indexed | 2024-03-09T14:17:42Z |
| format | Article |
| id | doaj.art-6cef0b273da2407592b0728233af0557 |
| institution | Directory Open Access Journal |
| issn | 2333-5084 |
| language | English |
| last_indexed | 2024-03-09T14:17:42Z |
| publishDate | 2023-11-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Earth and Space Science |
| spelling | doaj.art-6cef0b273da2407592b0728233af05572023-11-28T20:18:31ZengAmerican Geophysical Union (AGU)Earth and Space Science2333-50842023-11-011011n/an/a10.1029/2023EA002958Magnetic Anomaly Grid and Associated Uncertainty From Marine Trackline Data: The Caribbean Alternative Navigation Reference Experiment (CANREx)R. W. Saltus0A. Chulliat1B. Meyer2M. Bates3A. Sirohey4Cooperative Institute for Research in the Environmental Sciences University of Colorado Boulder CO USACooperative Institute for Research in the Environmental Sciences University of Colorado Boulder CO USANOAA National Centers for Environmental Information Boulder CO USASander Geophysics Ltd. Ottawa ON CanadaSander Geophysics Ltd. Ottawa ON CanadaAbstract Crustal magnetic anomaly maps over oceanic regions are based largely on marine trackline surveys. These surveys, collected from the 1950s to the present, span a wide range of data quality and reliability. We discuss a methodology for constructing grids from these data with associated cell by cell estimates of grid uncertainty. The method is tested with a modern airborne survey for a representative region in the eastern Caribbean. The results are promising, producing an uncertainty estimate that is accurate to one standard deviation for the test area. As magnetic anomaly maps and grids are increasingly applied as constraints for geologic interpretation as well as for alternative navigation (e.g., navigation by magnetic field patterns in the absence of GPS), it is important to quantify the accuracy of these maps.https://doi.org/10.1029/2023EA002958magnetic anomalymarine datagriddinggrid uncertaintymagnetic maps |
| spellingShingle | R. W. Saltus A. Chulliat B. Meyer M. Bates A. Sirohey Magnetic Anomaly Grid and Associated Uncertainty From Marine Trackline Data: The Caribbean Alternative Navigation Reference Experiment (CANREx) Earth and Space Science magnetic anomaly marine data gridding grid uncertainty magnetic maps |
| title | Magnetic Anomaly Grid and Associated Uncertainty From Marine Trackline Data: The Caribbean Alternative Navigation Reference Experiment (CANREx) |
| title_full | Magnetic Anomaly Grid and Associated Uncertainty From Marine Trackline Data: The Caribbean Alternative Navigation Reference Experiment (CANREx) |
| title_fullStr | Magnetic Anomaly Grid and Associated Uncertainty From Marine Trackline Data: The Caribbean Alternative Navigation Reference Experiment (CANREx) |
| title_full_unstemmed | Magnetic Anomaly Grid and Associated Uncertainty From Marine Trackline Data: The Caribbean Alternative Navigation Reference Experiment (CANREx) |
| title_short | Magnetic Anomaly Grid and Associated Uncertainty From Marine Trackline Data: The Caribbean Alternative Navigation Reference Experiment (CANREx) |
| title_sort | magnetic anomaly grid and associated uncertainty from marine trackline data the caribbean alternative navigation reference experiment canrex |
| topic | magnetic anomaly marine data gridding grid uncertainty magnetic maps |
| url | https://doi.org/10.1029/2023EA002958 |
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