Volume 45 Issue 2
Mar.  2023
Turn off MathJax
Article Contents
Yang Y J,Feng Y. 2023. Differences of geomagnetic anomalous field over Chinese mainland and its adjacent areas during 1960−2000 based on Taylor polynomial model. Acta Seismologica Sinica,45(2):302−314 doi: 10.11939/jass.20220042
Citation: Yang Y J,Feng Y. 2023. Differences of geomagnetic anomalous field over Chinese mainland and its adjacent areas during 1960−2000 based on Taylor polynomial model. Acta Seismologica Sinica45(2):302−314 doi: 10.11939/jass.20220042

Differences of geomagnetic anomalous field over Chinese mainland and its adjacent areas during 1960−2000 based on Taylor polynomial model

doi: 10.11939/jass.20220042
  • Received Date: 2022-03-31
  • Rev Recd Date: 2022-06-04
  • Available Online: 2023-03-31
  • Publish Date: 2023-03-15
  • This study adopts the geomagnetic measurements of the Chinese mainland in 1960.0, 1970.0, 1980.0, 1990.0, 2000.0, and the Taylor polynomial model to build up a medium-scale crustal magnetic anomaly model with low spatial resolution, associated with the fourth-generation geomagnetic comprehensive model (CM4). The figures of the anomaly field are drawn. The whole trends of the field are studied by putting all measurements into 2000.0. The differences in anomalies among different epochs have also been analyzed by the newest three-dimensional surface spline (3DSS) model derived from all available ground and aeromagnetic data. Results show that the intensity of the northward component X decreases with time, and its distribution shrinks to the southwest; the positive area of eastward component Y gradually moves to the west, and the negative area gradually occupies most of Chinese mainland; the distribution of vertical component Z is stable and is mainly negative in the study area, which implies that other factors do not likely influence the radial component. For the overall distribution of magnetic anomalies, components X, Z, total intensity F and horizontal component H are almost negative, which differs from CM4. Regarding the data consistency, the distribution of F has some similar features to the 3DSS model, which can illustrate more middle and small wavelength structures of the anomaly field. Large differences among the three models mainly come from the different measurement numbers, locations, and modeling theories.

     

  • loading
  • [1]
    An Z C. 2003. Spherical cap harmonic analysis of the geomagnetic residual field in China for 1950−1990[J]. Chinese Journal of Geophysics,46(6):767–771 (in Chinese).
    [2]
    Feng Y. 2011. Simulation of Lithospheric Magnetic Field Over Chinese Mainland[D]. Nanjing: Nanjing Agricultural University: 1−127 (in Chinese).
    [3]
    Feng Y,Jiang Y,Sun H,An Z C,Huang Y. 2018. The three-dimensional surface spline model of geomagnetic field[J]. Chinese Journal of Geophysics,61(4):1352–1365 (in Chinese).
    [4]
    Gao J T,An Z C,Gu Z W,Han W,Zhan Z J,Yao T Q. 2006. Distributions of the geomagnetic field and its secular variations expressed by the surface spline method in China (a part) for 1900−1936[J]. Chinese Journal of Geophysics,49(2):398–407 (in Chinese).
    [5]
    Alldredge L R. 1981. Rectangular harmonic analysis applied to the geomagnetic field[J]. J Geophys Res:Solid Earth,86(B4):3021–3026. doi: 10.1029/JB086iB04p03021
    [6]
    Feng Y,Sun H,Jiang Y. 2015. Data fitting and modeling of regional geomagnetic field[J]. Appl Geophys,12(3):303–316. doi: 10.1007/s11770-015-0500-6
    [7]
    Feng Y,Jiang Y,Jiang Y,Liu B J,Jiang J,Liu Z W,Ye M C,Wang H S,Li X M. 2016a. Spherical cap harmonic analysis of regional magnetic anomalies based on CHAMP satellite data[J]. Appl Geophys,13(3):561–569. doi: 10.1007/s11770-016-0567-8
    [8]
    Feng Y,Jiang Y,Jiang Y,Li Z,Jiang J,Liu Z W,Ye M C,Wang H S,Li X M. 2016b. Regional magnetic anomaly fields:3D Taylor polynomial and surface spline models[J]. Appl Geophys,13(1):59–68. doi: 10.1007/s11770-016-0533-5
    [9]
    Finlay C C,Olsen N,Tøffner-Clausen L. 2015. DTU candidate field models for IGRF-12 and the CHAOS-5 geomagnetic field model[J]. Earth Planets Space,67(1):114. doi: 10.1186/s40623-015-0274-3
    [10]
    Finlay C C,Olsen N,Kotsiaros S,Gillet N,Tøffner-Clausen L. 2016. Recent geomagnetic secular variation from Swarm and ground observatories as estimated in the CHAOS-6 geomagnetic field model[J]. Earth Planets Space,68(1):112. doi: 10.1186/s40623-016-0486-1
    [11]
    Finlay C C,Kloss C,Olsen N,Hammer M D,Tøffner-Clausen L,Grayver A,Kuvshinov A. 2020. The CHAOS-7 geomagnetic field model and observed changes in the South Atlantic anomaly[J]. Earth Planets Space,72(1):156. doi: 10.1186/s40623-020-01252-9
    [12]
    Friis-Christensen E,Lühr H,Hulot G. 2006. Swarm:A constellation to study the Earth’s magnetic field[J]. Earth Planets Space,58(4):351–358. doi: 10.1186/BF03351933
    [13]
    Haines G V. 1985. Spherical cap harmonic analysis[J]. J Geophys Res:Solid Earth,90(B3):2583–2591. doi: 10.1029/JB090iB03p02583
    [14]
    Le Mouel J. 1969. Sur la Distribution des Elements Magnetiques en France[D]. University de Paris.
    [15]
    Maus S. 2010. An ellipsoidal harmonic representation of Earth’s lithospheric magnetic field to degree and order 720[J]. Geochem Geophys Geosyst,11(6):Q06015. doi: 10.1029/2010GC003026
    [16]
    Maus S,Lühr H,Rother M,Hemant K,Balasis G,Ritter P,Stolle C. 2007. Fifth-generation lithospheric magnetic field model from CHAMP satellite measurements[J]. Geochem Geophys Geosyst,8(5):Q05013. doi: 10.1029/2006GC001521
    [17]
    Maus S,Yin F,Lühr H,Manoj C,Rother M,Rauberg J,Michaelis I,Stolle C,Müller R D. 2008. Resolution of direction of oceanic magnetic lineations by the sixth-generation lithospheric magnetic field model from CHAMP satellite magnetic measurements[J]. Geochem Geophys Geosyst,9(7):Q07021. doi: 10.1029/2008GC001949
    [18]
    Maus S,Barckhausen U,Berkenbosch H,Bournas N,Brozena J,Childers V,Dostaler F,Fairhead J D,Finn C,Von Frese R R B,Gaina C,Golynsky S,Kucks R,Lühr H,Milligan P,Mogren S,Müller R D,Olesen O,Pilkington M,Saltus R,Schreckenberger B,Thébault E,Tontini T C. 2009. EMAG2:A 2-arc min resolution earth magnetic anomaly grid compiled from satellite,airborne,and marine magnetic measurements[J]. Geochem Geophys Geosyst,10(8):Q08005. doi: 10.1029/2009GC002471
    [19]
    Meyer B,Chulliat A,Saltus R. 2017. Derivation and error analysis of the earth magnetic anomaly grid at 2 arc min resolution version 3 (EMAG2v3)[J]. Geochem Geophys Geosyst,18(12):4522–4537. doi: 10.1002/2017GC007280
    [20]
    Neubert T,Mandea M,Hulot G,von Frese R,Primdahl F,Jørgensen J L,Friis-Christensen E,Stauning P,Olsen N,Risbo T. 2001. Ørsted satellite captures high-precision geomagnetic field data[J]. EOS,82(7):81–88.
    [21]
    Olsen N,Ravat D,Finlay C C,Kother L K. 2017. LCS-1:A high-resolution global model of the lithospheric magnetic field derived from CHAMP and Swarm satellite observations[J]. Geophys J Int,211(3):1461–1477. doi: 10.1093/gji/ggx381
    [22]
    Ou J M,Du A M,Thébault E,Xu W Y,Tian X B,Zhang T L. 2013. A high resolution lithospheric magnetic field model over China[J]. Science China Earth Science,56(10):1759–1768. doi: 10.1007/s11430-013-4580-y
    [23]
    Purucker M E, Whaler K A. 2007. Treatise on Geophysics, Volume 5[M]. Amsterdam: Elsevier: 195–237.
    [24]
    Reigber C,Lühr H,Schwintzer P. 2002. Champ Mission status[J]. Adv Space Res,30(2):129–134. doi: 10.1016/S0273-1177(02)00276-4
    [25]
    Sabaka T J,Olsen N,Purucker M E. 2004. Extending comprehensive models of the Earth’s magnetic field with Ørsted and CHAMP data[J]. Geophys J Int,159(2):521–547. doi: 10.1111/j.1365-246X.2004.02421.x
    [26]
    Sabaka T J,Olsen N,Tyler R H,Kuvshinov A. 2015. CM5,a pre-Swarm comprehensive geomagnetic field model derived from over 12 yr of CHAMP,Ørsted,SAC-C and observatory data[J]. Geophys J Int,200(3):1596–1626. doi: 10.1093/gji/ggu493
    [27]
    Sabaka T J,Tøffner-Clausen L,Olsen N,Finlay C C. 2020. CM6:A comprehensive geomagnetic field model derived from both CHAMP and Swarm satellite observations[J]. Earth Planets Space,72(1):80. doi: 10.1186/s40623-020-01210-5
    [28]
    Thébault E,Hulot G,Langlais B,Vigneron P. 2021. A spherical harmonic model of Earth’s lithospheric magnetic field up to degree 1050[J]. Geophys Res Lett,48(21):e2021GL095147. doi: 10.1029/2021GL095147
    [29]
    Xiong S Q,Tong J,Ding Y Y,Li Z K. 2016. Aeromagnetic data and geological structure of continental China:A review[J]. Appl Geophys,13(2):227–237. doi: 10.1007/s11770-016-0552-2
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(6)

    Article Metrics

    Article views (144) PDF downloads(63) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return