CPD model and data for CPD inversion

This file includes the Curie Point Depth (CPD) model and related data files for the manuscript 'A continental model of Curie Point Depth for China and surroundings based on Equivalent Source Method'

This work is fulfilled by Lei, Y., Jiao, L., Huang, Q., and Tu, J.

For any questions, please contact us by Email: [e-mail]; [e-mail]

The files *.mat are data complied in Matlab, and the codes and data files should be placed in the same directory.

The file cpd_result.xyz is the result of the inverted CPD in mainland China, which is shown in Figure 3. 

The file d_obs.mat is the observed lithospheric magnetic data from EMM2017 model, and magnetic responses generated by global oceanic remanent magnetization have been removed due to the assumption of induced magnetization. The spherical harmonic coefficients of the EMM2017 model can be download from https://www.ngdc.noaa.gov/geomag/EMM/. The global ocean remanent magnetization model is proposed by Masterton et al. (2013), https://doi.org/ 10.1093/gji/ggs063

The file ini_cpd.mat is the initial CPD model proposed by Sun et al., 2022, which can be found in https://doi.org/10.5381/zenodo.6459746

Outside the study area, the magnetization is refered to the global vertical integral susceptibility model proposed by Hemant & Maus, (2005). The magnetic responses base on their model are saved as mag_out.mat. 

The core field used in this study for the inducing field calculation is from the IGRF13 model. The model provide the spherical harmonic coefficients to the degree of 13 (stored in IGRF13.txt), can be download from https://www.ngdc.noaa.gov/IAGA/vmod/igrf.html

The global topography data are from ETOPO global relief model, which can be found at https://www.ncei.noaa.gov/products/etopo-global-relief-model. The topography data in the study areas is stored in etopo30_6_66_62_146.mat

The Crust1.0 model (crust1.bnds) used for establishing the susceptibility model are from https://igppweb.ucsd.edu/~gabi/crust1.html. 

The geoid topography comes from EGM2008 gravity model, and can be obtained from http://icgem.gfz-potsdam.de/calcgrid

The surface heat flow data (HF_China.xlsx) are download from Jiang et al., 2019.

Reference:

Alken, P., Thébault, E., Beggan, C.D. et al. (2021). International Geomagnetic Reference Field: the thirteenth generation. Earth Planets Space 73, 49 . https://doi.org/10.1186/s40623-020-01288-x

Hemant, K., Maus, S. (2005). Geological modeling of the new CHAMP magnetic anomaly maps using a geographical information system technique. Journal Geophysical Research Solid Earth 110, B12103, https://doi.org/10.1029/2005JB003837

Jiang, G., Hu, S., Shi, Y., Zhang, C., Wang, Z., Hu, D. (2019). Terrestrial heat flow of continent China: Updated dataset and tectonic implications. Tectonophysics, 753, 36-48. https://doi.org/ 10.1016/j.tecto.2019.01.006 

Laske, G., Masters, G., Ma, Z., Pasyanos, M. (2013). Update on Crust1.0 - A 1-degree global model of earth’s crust. Geophysical Research Abstracts, 15, Abstract EGU2013-2658. http://igppweb. ucsd.edu/~gabi/rem.html 

Sun, Y., Dong, S., Wang, X., Liu, Mian., Zhang, H., Shi, Y., (2022). Three-dimensional thermal structure of East Asian continental lithosphere. Journal Geophysical Research: Solid Earth, 127, e2021JB023432. https://doi.org/10.1029/2021JB023432