Catalog of synthetic seismic records from mineral physics and travel-time tables from Waszek et al., 2021, Nature Geoscience

This release is associated with the accepted publication in Nature Geoscience:

Waszek L., Tauzin B., Schmerr N., Ballmer M. and Afonso J.C. A poorly mixed mantle transition zone and its thermal state inferred from seismic waves. Nature Geoscience, 2021.

This dataset must be used in conjunction with the NoLimit software package (https://zenodo.org/record/5512805).

Both the software and dataset allow the prediction of synthetic seismic waveforms for SS and PP-precursors from mineral physics models, as well as their processing for reconstructing the surface of seismic boundaries associated with major mineralogical phase transitions in the Earth’s mantle (namely, the 410-km and 660-km depth discontinuities).

For technical reasons (storage and quick access), the catalog is downsampled with respect to the one in Waszek et al. (2021), and it is provided with the HDF5 format. For more advanced applications such as changing mantle composition, or generating waveforms for deeper earthquakes, please contact Benoit Tauzin ([e-mail]) and Lauren Waszek ([e-mail]).

The dataset includes:

* A fixed mantle composition, which is a mechanical mixture of basalt and harzburgite with a fraction of basalt f=0.2.
* A downsampled catalog of synthetic waveforms for event depths between 0 and 80 km by step of 10 km (enough for reproducing the processing of observed SS and PP precursors waveforms).
* Adiabatic temperature gradients with potential temperature Tpot between 1200 and 2100 K by step of 100 K.

This catalog and associated travel-time tables will allow any user to generate synthetic waveforms for any moment tensor, and events within the pre-defined depth interval.

How to cite this material?

Any use of the datasets or software must refer to:

The reference paper: Waszek L., Tauzin B., Schmerr N., Ballmer M., Afonso J.C. A poorly mixed mantle transition zone and its thermal state inferred from seismic waves. Nature Geoscience. 2021.

Software: Tauzin, Benoit, & Waszek, Lauren. (2021). NoLiMit MATLAB package v1.0. Non-Linear Bayesian partition Modeling of the Earth's Mantle Transition zone (Version 1). Zenodo. https://doi.org/10.5281/zenodo.5512805

Datasets: Tauzin, Benoit, Waszek, Lauren, & Afonso, Juan Carlos. (2021). Catalog of synthetic seismic records from mineral physics and travel-time tables from Waszek et al., 2021, Nature Geoscience (Version 1) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.5512035

本数据集发布版本关联已被《自然-地球科学》（Nature Geoscience）录用的研究论文：

Waszek L.、Tauzin B.、Schmerr N.、Ballmer M.与Afonso J.C.的《利用地震波推断混合度欠佳的地幔过渡带及其热状态》，发表于《自然-地球科学》，2021年。

本数据集需配合NoLiMit软件包（NoLiMit）使用，其获取地址为https://zenodo.org/record/5512805。

该软件与数据集可基于矿物物理模型，预测SS与PP前驱波（SS and PP-precursors）的合成地震波形，同时支持开展相关处理，以重构地球地幔过渡带（mantle transition zone）中主要矿物相变对应的地震界面表面，即410公里与660公里深度的地震不连续面（410-km and 660-km depth discontinuities）。

受存储与快速访问的技术约束，本目录相较于Waszek等人（2021）的原始目录进行了降采样，并以HDF5格式提供。若需开展更高级的应用场景，例如修改地幔成分或为深部地震生成波形，请联系Benoit Tauzin（邮箱：[e-mail]）与Lauren Waszek（邮箱：[e-mail]）。

本数据集涵盖以下内容：
* 固定地幔成分：由玄武岩与方辉橄榄岩经机械混合而成，玄武岩占比f=0.2。
* 降采样后的合成波形目录，对应事件深度区间为0至80公里，步长为10公里（足以复现观测得到的SS与PP前驱波波形处理流程）。
* 绝热温度梯度，其位温Tpot的取值范围为1200至2100开尔文，步长为100开尔文。

本目录及配套走时表可支持任意用户为任意矩张量（moment tensor）及预定义深度区间内的地震生成合成波形。

如何引用本资源？
对本数据集或软件的任何使用均需参考以下文献：
研究论文：Waszek L., Tauzin B., Schmerr N., Ballmer M., Afonso J.C. 《利用地震波推断混合度欠佳的地幔过渡带及其热状态》. 《自然-地球科学》. 2021.
软件：Tauzin, Benoit, & Waszek, Lauren. (2021). NoLiMit MATLAB软件包v1.0. 地球地幔过渡带的非线性贝叶斯分区建模（版本1）[软件]. Zenodo. https://doi.org/10.5281/zenodo.5512805
数据集：Tauzin, Benoit, Waszek, Lauren, & Afonso, Juan Carlos. (2021). 矿物物理合成地震记录目录及基于Waszek等人2021年《自然-地球科学》论文的走时表（版本1）[数据集]. Zenodo. https://doi.org/10.5281/zenodo.5512035