Nomograms are an easy to use and visually attractive graphical tool to solve for any of the variables within an often complex equation. In seismology, the most well-known nomogram is a three-parallel-scale graphic for the calculation of local magnitude given the epicentral distance and trace amplitude. Until the advent of computers, nomograms were often employed by engineers and scientists in many fields as they provide a means for rapid and accurate calculations as well as helping the user understand the sensitivity of the final results to the input parameters. It is this aid to understanding that remains a key attraction of these graphical tools, which are now rarely seen (although they remain common in some fields of medicine where they are used for rapid screening and estimating risks). In this research letter, we present a nomogram summarising the results of simple probabilistic seismic hazard assessments (PSHAs) for peak ground acceleration and elastic response spectral acceleration for a structural period of 1s and return periods from 100 to 2500 years, where the effects of the activity rate and the slope of the Gutenberg-Richter relation are captured. We believe that this nomogram has considerable educational benefit for engineering seismology students, decision makers and other non-expert users of results of PSHAs.

中文翻译：

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线型图有助于解释概率地震危险

Nomograms是一种易于使用且在视觉上具有吸引力的图形工具，可以解决通常很复杂的方程式中的任何变量。在地震学中，最著名的列线图是一个三平行比例的图形，用于在给定震中距离和迹线振幅的情况下计算局部震级。在计算机问世之前，工程师和科学家经常在许多领域使用列线图，因为它们提供了一种快速准确的计算方法，并帮助用户了解最终结果对输入参数的敏感性。正是这种理解的帮助仍然是这些图形工具的主要吸引力，这些图形工具现在很少见（尽管在某些用于快速筛查和评估风险的医学领域中仍然很常见）。在这封研究信中，我们提供了一个诺模图，总结了简单的概率地震危险性评估（PSHA）的结果，即在1s的结构周期和100到2500年的返回期中，峰值地面加速度和弹性响应谱加速度的影响，其中活动率和坡度的影响捕获了古腾堡-里希特关系。我们认为，该诺模图对工程地震学的学生，决策者和PSHA结果的其他非专家用户而言，具有相当大的教育意义。