{"title":"古强度实验中存在多域行为的另一个简单测试","authors":"Alexander W. Tully, Greig A. Paterson","doi":"10.1029/2025JB031608","DOIUrl":null,"url":null,"abstract":"<p>Paleointensity measurements are vital for understanding the deep Earth and the evolution of the geomagnetic field, however, they suffer from non-ideal behavior that compromises the fidelity of the results. In an attempt to screen for non-ideal behavior in paleointensity experiments, selection criteria are used. One such non-ideal behavior is partial thermoremanent magnetization tails, which in the IZZI protocol result in a zig-zagging pattern on an Arai plot. While checks for these tails can be performed, these are not routinely used in experiments. We set out a new framework with which to create, develop, and re-assess selection criteria before applying it to our proposed new selection statistic, <i>Ziggie</i>, which is specific to detecting zig-zagging behavior. In creating <i>Ziggie</i>, we have attempted to define a criterion that is able to objectively and robustly identify the target behavior, consistently provide a quantifiable assessment of the target behavior, and is predominately sensitive to the target behavior while being free of undue influences. Other pre-existing statistics identifying Arai plot zig-zag, <i>Z</i>*, <i>IZZI_MD</i>, <i>β</i>, and <i>SCAT</i>, are also tested, but fail to meet all requirements. When a criterion of <i>Ziggie</i> ≤ 0.1 is applied to real IZZI data we find an overall improvement in the results and suggest the adoption of this criterion in future IZZI analysis.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 7","pages":""},"PeriodicalIF":3.9000,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2025JB031608","citationCount":"0","resultStr":"{\"title\":\"Another Simple Test for the Presence of Multidomain Behavior During Paleointensity Experiments\",\"authors\":\"Alexander W. Tully, Greig A. Paterson\",\"doi\":\"10.1029/2025JB031608\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Paleointensity measurements are vital for understanding the deep Earth and the evolution of the geomagnetic field, however, they suffer from non-ideal behavior that compromises the fidelity of the results. In an attempt to screen for non-ideal behavior in paleointensity experiments, selection criteria are used. One such non-ideal behavior is partial thermoremanent magnetization tails, which in the IZZI protocol result in a zig-zagging pattern on an Arai plot. While checks for these tails can be performed, these are not routinely used in experiments. We set out a new framework with which to create, develop, and re-assess selection criteria before applying it to our proposed new selection statistic, <i>Ziggie</i>, which is specific to detecting zig-zagging behavior. In creating <i>Ziggie</i>, we have attempted to define a criterion that is able to objectively and robustly identify the target behavior, consistently provide a quantifiable assessment of the target behavior, and is predominately sensitive to the target behavior while being free of undue influences. Other pre-existing statistics identifying Arai plot zig-zag, <i>Z</i>*, <i>IZZI_MD</i>, <i>β</i>, and <i>SCAT</i>, are also tested, but fail to meet all requirements. When a criterion of <i>Ziggie</i> ≤ 0.1 is applied to real IZZI data we find an overall improvement in the results and suggest the adoption of this criterion in future IZZI analysis.</p>\",\"PeriodicalId\":15864,\"journal\":{\"name\":\"Journal of Geophysical Research: Solid Earth\",\"volume\":\"130 7\",\"pages\":\"\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2025-07-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2025JB031608\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Geophysical Research: Solid Earth\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1029/2025JB031608\",\"RegionNum\":2,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"GEOCHEMISTRY & GEOPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Geophysical Research: Solid Earth","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1029/2025JB031608","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
Another Simple Test for the Presence of Multidomain Behavior During Paleointensity Experiments
Paleointensity measurements are vital for understanding the deep Earth and the evolution of the geomagnetic field, however, they suffer from non-ideal behavior that compromises the fidelity of the results. In an attempt to screen for non-ideal behavior in paleointensity experiments, selection criteria are used. One such non-ideal behavior is partial thermoremanent magnetization tails, which in the IZZI protocol result in a zig-zagging pattern on an Arai plot. While checks for these tails can be performed, these are not routinely used in experiments. We set out a new framework with which to create, develop, and re-assess selection criteria before applying it to our proposed new selection statistic, Ziggie, which is specific to detecting zig-zagging behavior. In creating Ziggie, we have attempted to define a criterion that is able to objectively and robustly identify the target behavior, consistently provide a quantifiable assessment of the target behavior, and is predominately sensitive to the target behavior while being free of undue influences. Other pre-existing statistics identifying Arai plot zig-zag, Z*, IZZI_MD, β, and SCAT, are also tested, but fail to meet all requirements. When a criterion of Ziggie ≤ 0.1 is applied to real IZZI data we find an overall improvement in the results and suggest the adoption of this criterion in future IZZI analysis.
期刊介绍:
The Journal of Geophysical Research: Solid Earth serves as the premier publication for the breadth of solid Earth geophysics including (in alphabetical order): electromagnetic methods; exploration geophysics; geodesy and gravity; geodynamics, rheology, and plate kinematics; geomagnetism and paleomagnetism; hydrogeophysics; Instruments, techniques, and models; solid Earth interactions with the cryosphere, atmosphere, oceans, and climate; marine geology and geophysics; natural and anthropogenic hazards; near surface geophysics; petrology, geochemistry, and mineralogy; planet Earth physics and chemistry; rock mechanics and deformation; seismology; tectonophysics; and volcanology.
JGR: Solid Earth has long distinguished itself as the venue for publication of Research Articles backed solidly by data and as well as presenting theoretical and numerical developments with broad applications. Research Articles published in JGR: Solid Earth have had long-term impacts in their fields.
JGR: Solid Earth provides a venue for special issues and special themes based on conferences, workshops, and community initiatives. JGR: Solid Earth also publishes Commentaries on research and emerging trends in the field; these are commissioned by the editors, and suggestion are welcome.