Testing the Earthquake Early-Warning Parameter Correlations in the Southern Iberian Peninsula

Carranza M.; Buforn E.; Zollo A.

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Testing the Earthquake Early-Warning Parameter Correlations in the Southern Iberian Peninsula

机译：测试伊比利亚南部半岛地震的预警参数相关性

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The south of the Iberian Peninsula is of especial interest for the application of Earthquake Early Warning System (EEWS) technologies due to the past occurrence of damaging earthquakes such as the 1755 Lisbon earthquake. However, there are several critical issues that need to be addressed in order to develop an EEWS in this area. The first is the magnitude scale inhomogeneity of the available catalogues. A second is that most of the available broad-band seismograms for this area correspond to earthquakes with magnitudes less than 6.0, recorded at distances greater than 100 km, and sometimes with a low signal-to-noise ratio. And third, the occurrence of large earthquakes in this area means that the standard EEWS time window normally used needs to be tested in order to check whether it is long enough. Our paper describes the results of homogenizing the catalogue magnitudes by using empirical relationships to obtain the moment magnitude M-w. A criterion based on a threshold value for the signal-to-noise ratio is applied in order to avoid noise-contaminated seismogram data. An important part of the study is a check of whether the correlations previously obtained for south Iberia are valid for other neighbouring areas such as Algeria, and for larger earthquakes. Finally, since recent studies have shown that the larger the earthquake the longer the time window needed to properly estimate the magnitude, the window was increased progressively from 0 to 20 s in order to study the behaviour of the EEWS parameters for the largest earthquakes in the database.

机译：由于过去发生的破坏性地震（例如1755年里斯本地震），伊比利亚半岛南部特别受到地震预警系统（EEWS）技术的应用。但是，为了在此领域开发EEWS，需要解决几个关键问题。第一个是可用目录的量表规模不均匀性。第二个是该地区大多数可用的宽带地震图对应于震级小于6.0的地震，记录的距离大于100 km，有时信噪比低。第三，该地区大地震的发生意味着需要对通常使用的标准EEWS时间窗进行测试，以检查其是否足够长。我们的论文描述了通过使用经验关系获得矩量级M-w来使目录量级均匀化的结果。为了避免噪声污染的地震图数据，应用了基于信噪比阈值的标准。该研究的重要部分是检查先前为伊比利亚南部地区获得的相关性是否对其他邻近地区（例如阿尔及利亚）和大地震有效。最后，由于最近的研究表明，地震越大，正确估计震级所需的时间窗口就越长，因此为了研究EEWS参数在大地震中的行为，该窗口从0逐渐增加到20 s。数据库。

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《Pure and Applied Geophysics》 |2015年第9期|共14页
作者
Carranza M.; Buforn E.; Zollo A.;
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正文语种 eng
中图分类地球物理学;
关键词
Earthquake early warning; Southern Iberia; Signal to noise ratio; Time window;

机译：地震预警;伊比利亚南部;信噪比;时间窗;

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专利

1. Testing the Earthquake Early-Warning Parameter Correlations in the Southern Iberian Peninsula [J] . Carranza M., Buforn E., Zollo A. Pure and Applied Geophysics . 2015,第9期

机译：测试伊比利亚南部半岛地震的预警参数相关性
2. Performance of the southern Korean Peninsula seismograph network and refinement of hypocentral parameters of local earthquakes, 2004–2008 [J] . Eun Hee Park, Jung Mo Lee, Woohan Kim Geoscience journal . 2011,第1期

机译：2004-2008年朝鲜半岛南部地震记录仪网络的性能和局部地震震源参数的细化
3. Performance of the southern Korean Peninsula seismograph network and refinement of hypocentral parameters of local earthquakes, 2004–2008 [J] . Eun Hee Park, Jung Mo Lee, Woohan Kim Geosciences Journal . 2011,第1期

机译：2004-2008年朝鲜半岛南部地震仪网络的性能和局部地震震源参数的细化
4. A GEOSTATISTICAL APPROACH FOR MAPPING SURFACE WIND SPEED IN ANDALUSIA (SOUTHERN IBERIAN PENINSULA) [C] . H. Alsamamra, F. Santos-Alamillos, D. Pozo-Vazquez, European Wind Energy Conference and Exhibition . 2010

机译：安达卢西亚（伊比利亚半岛南部）映射地表风速的地质统计方法
5. Source parameter estimation and related uncertainties of small earthquakes in southern California [D] . Kane, Deborah Lynn 2011

机译：南加州小地震的震源参数估计和相关不确定性
6. Short-Term Effects of a Revegetation Program on the Orthopteran Diversity in Oak Forests of the Southern Iberian Peninsula [O] . Lourdes Moyano, Ana María Cárdenas, Patricia Gallardo, 2014

机译：植被恢复计划对伊比利亚南部半岛橡树林直翅类生物多样性的短期影响
7. : "This paper deals with the functionality of the flaked stone assemblages from several Neolithic sites of the NE of the Iberian Peninsula. The chronological framework ranges from the mid-6th to the mid-4th millennium cal. BCE, which corresponds to the Early and Middle Neolithic. This long period ranges from the arrival of the first farming communities in the Iberian Peninsula, around 5600-5500 cal. BCE, to 3600-3500 cal. BCE, two millennia later, when Neolithic communities had stably occupied most of the available territory, from the mountainous areas of the Pyrenees to the coastal areas of the Mediterranean.In this context, the NE of the Iberian Peninsula is one of the areas where a major number of use-wear analyses have been carried out, especially for what concerns the Neolithic period. This is mainly due to the interest shown by the directors of the excavations and by the Spanish use-wear specialists as well; both participated and cooperated in order to enlarge the number of contexts studied, making the NE of the Iberian Peninsula one of the areas of Europe with the largest number of ‘functional studies’. As a result, today we have a reliable picture of the type of lithic tools used by the first farming groups, how they were used, and which needs they were satisfying.The methodology employed for this type of analysis is today broadly shared by most use-wear specialists. A stereoscopic microscope is used together with a reflected-light microscope for the analysis of the archaeological specimens. Afterwards, the observed use-wear traces are compared with the traces from experimental tools. This study primarily made use of the tools preserved at the ‘Traceoteque’ of the Institución Milà y Fontanals of the CSIC of Barcelona.This paper presents the results obtained for the different types of analysed sites and the relative lithic assemblages. In this way, tools from different contexts are compared: open-air sites, caves and rock-shelters, pit-sites, burials, and mining sites. Such a diversity of contexts allowed for the exploration of the existence of recurrences and differences in the functionality of the lithic tools from one site to another. The results obtained have also provided information on some aspects related to the economic processes carried out at the different sites, caves, rock-shelters and open-air contexts. It has been possible to gain fresh data on the types of tasks carried out and their relative importance for each site, their relation with the geographical and environmental context and the natural resources available there. In addition, analysing tools recovered from burials – mainly individual inhumations – provided information on the relationships between the buried individuals and the working tools, in particular exploring the relationships between sex and age patterns and the types of tools deposited as goods.In conclusion, use-wear analysis allowed for the exploration of a variety of issues; from technical aspects related to the production and management of the lithic resources to social aspects related to the subsistence activities and the individuals that carried them out." [O] . Gibaja Bao, Juan Francisco, Mazzucco, Niccolo 2015

机译：：“本文研究了伊比利亚半岛东北部几个新石器时代遗址的片状石材组合的功能。时间框架从公元前6世纪中叶到4世纪中叶，分别对应于早期和早期。新石器时代中期，这段时间的长短是从伊比利亚半岛的第一个农业社区到来，大约在公元前5600-5500 cal，到了两千年后的3600-3500 BCE，当时新石器时代的社区稳定地占据了大部分可用土地。从比利牛斯山脉山区到地中海沿岸地区。在这种情况下，伊比利亚半岛东北部是进行过大量使用磨损分析的地区之一，尤其是在关注方面新石器时代，这主要是由于发掘负责人和西班牙使用服装专家表现出的浓厚兴趣；他们参与和合作以扩大孔蒂的数量xts进行了研究，使伊比利亚半岛的NE成为“功能研究”数量最多的欧洲地区之一。结果，今天我们可以可靠地了解第一批耕作小组使用的石器工具的类型，使用方法以及它们满足的需求。今天，大多数使用方法广泛共享用于这种类型的分析的方法穿专家。立体显微镜与反射光显微镜一起用于分析考古样本。然后，将观察到的使用磨损痕迹与实验工具的痕迹进行比较。这项研究主要利用了巴塞罗那CSIC的米拉·丰塔纳尔研究所的“ Traceoteque”中保存的工具。本文介绍了针对不同类型的分析地点和相对石器组合所获得的结果。通过这种方式，可以比较来自不同环境的工具：露天场所，洞穴和岩石避难所，露天场所，埋葬场所和采矿场所。如此多样的上下文允许探索重复性的存在以及从一个站点到另一个站点的石器工具的功能差异。所获得的结果还提供了与在不同地点，洞穴，避难所和露天环境中进行的经济过程有关的某些方面的信息。可以获得有关所执行任务的类型及其对每个站点的相对重要性，它们与地理和环境环境以及那里可用自然资源的关系的新数据。此外，对从墓葬中回收的工具（主要是个人遗体）进行分析，可提供有关被掩埋的个体与工作工具之间关系的信息，尤其是探索性别与年龄模式之间的关系以及作为商品存放的工具的类型。磨损分析允许探索各种问题；从与石器资源的生产和管理有关的技术方面到与自给活动及其实施者有关的社会方面。”

Testing the Earthquake Early-Warning Parameter Correlations in the Southern Iberian Peninsula

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