USTC-Pickers: a Unified Set of seismic phase pickers Transfer learned for China

IF 1.2 4区地球科学 Q3 Earth and Planetary Sciences

Earthquake Science Pub Date : 2023-04-01 DOI:10.1016/j.eqs.2023.03.001

Jun Zhu , Zefeng Li , Lihua Fang

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引用次数: 5

Abstract

Current popular deep learning seismic phase pickers like PhaseNet and EQTransformer suffer from performance drop in China. To mitigate this problem, we build a unified set of customized seismic phase pickers for different levels of use in China. We first train a base picker with the recently released DiTing dataset using the same U-Net architecture as PhaseNet. This base picker significantly outperforms the original PhaseNet and is generally suitable for entire China. Then, using different subsets of the DiTing data, we fine-tune the base picker to better adapt to different regions. In total, we provide 5 pickers for major tectonic blocks in China, 33 pickers for provincial-level administrative regions, and 2 special pickers for the Capital area and the China Seismic Experimental Site. These pickers show improved performance in respective regions which they are customized for. They can be either directly integrated into national or regional seismic network operation or used as base models for further refinement for specific datasets. We anticipate that this picker set will facilitate earthquake monitoring in China.

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USTC-Pickers:一套统一的地震相位拾取器在中国的迁移学习

目前流行的深度学习地震选相器(如PhaseNet和EQTransformer)在中国的性能下降。为了缓解这一问题，我们建立了一套统一的定制地震相位拾取器，用于中国不同级别的使用。首先，我们使用与PhaseNet相同的U-Net架构，使用最近发布的DiTing数据集训练一个base picker。这个基础选择器明显优于原来的PhaseNet，通常适用于整个中国。然后，使用不同的DiTing数据子集，我们微调基数选择器，以更好地适应不同的区域。我们为中国主要构造块提供了5台拾荒机，为省级行政区提供了33台拾荒机，为首都地区和中国地震试验场提供了2台专用拾荒机。这些拾取器在各自定制的区域中显示出改进的性能。它们既可以直接集成到国家或区域地震台网操作中，也可以用作进一步细化特定数据集的基础模型。我们期待这套采集设备将为中国的地震监测提供便利。

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来源期刊

Earthquake Science GEOCHEMISTRY & GEOPHYSICS-

CiteScore

1.10

自引率

8.30%

发文量

审稿时长

3 months

期刊介绍： Earthquake Science (EQS) aims to publish high-quality, original, peer-reviewed articles on earthquake-related research subjects. It is an English international journal sponsored by the Seismological Society of China and the Institute of Geophysics, China Earthquake Administration. The topics include, but not limited to, the following ● Seismic sources of all kinds. ● Earth structure at all scales. ● Seismotectonics. ● New methods and theoretical seismology. ● Strong ground motion. ● Seismic phenomena of all kinds. ● Seismic hazards, earthquake forecasting and prediction. ● Seismic instrumentation. ● Significant recent or past seismic events. ● Documentation of recent seismic events or important observations. ● Descriptions of field deployments, new methods, and available software tools. The types of manuscripts include the following. There is no length requirement, except for the Short Notes. 【Articles】 Original contributions that have not been published elsewhere. 【Short Notes】 Short papers of recent events or topics that warrant rapid peer reviews and publications. Limited to 4 publication pages. 【Rapid Communications】 Significant contributions that warrant rapid peer reviews and publications. 【Review Articles】Review articles are by invitation only. Please contact the editorial office and editors for possible proposals. 【Toolboxes】 Descriptions of novel numerical methods and associated computer codes. 【Data Products】 Documentation of datasets of various kinds that are interested to the community and available for open access (field data, processed data, synthetic data, or models). 【Opinions】Views on important topics and future directions in earthquake science. 【Comments and Replies】Commentaries on a recently published EQS paper is welcome. The authors of the paper commented will be invited to reply. Both the Comment and the Reply are subject to peer review.