首页 > 最新文献

Acta Geophysica最新文献

英文 中文
Digitized Database of Old Seismograms Recorder in Romania 罗马尼亚旧地震记录数字化数据库
IF 2.3 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2016-12-02 DOI: 10.1515/acgeo-2016-0039
D. Paulescu, M. Rogozea, M. Popa, M. Radulian
The aim of this paper is to describe a managing system for a unique Romanian database of historical seismograms and complementary documentation (metadata) and its dissemination and analysis procedure. For this study, 5188 historical seismograms recorded between 1903 and 1957 by the Romanian seismological observatories (Bucharest-Filaret, Focşani, Bacău, Vrincioaia, Câmpulung-Muscel, Iaşi) were used. In order to reconsider the historical instrumental data, the analog seismograms are converted to digital images and digital waveforms (digitization/ vectorialisation). First, we applied a careful scanning procedure of the seismograms and related material (seismic bulletins, station books, etc.). In a next step, the high resolution scanned seismograms will be processed to obtain the digital/numeric waveforms. We used a Colortrac Smartlf Cx40 scanner which provides images in TIFF or JPG format. For digitization the algorithm Teseo2 developed by the National Institute of Geophysics and Volcanology in Rome (Italy), within the framework of the SISMOS Project, will be used.
本文的目的是描述一个独特的罗马尼亚历史地震记录和补充文件(元数据)数据库的管理系统及其传播和分析程序。本研究使用了罗马尼亚地震观测站(Bucharest-Filaret, foc, bac, Vrincioaia, cenculung - muscel, i)在1903 - 1957年间记录的5188个历史地震图。为了重新考虑历史仪器数据,模拟地震图被转换为数字图像和数字波形(数字化/向量化)。首先,我们对地震记录和相关资料(地震公报、台站手册等)进行了仔细的扫描。下一步,将对高分辨率扫描地震图进行处理,以获得数字/数值波形。我们使用了Colortrac Smartlf Cx40扫描仪,它提供TIFF或JPG格式的图像。为了实现数字化,将使用由罗马(意大利)国家地球物理和火山学研究所在SISMOS项目框架内开发的算法Teseo2。
{"title":"Digitized Database of Old Seismograms Recorder in Romania","authors":"D. Paulescu, M. Rogozea, M. Popa, M. Radulian","doi":"10.1515/acgeo-2016-0039","DOIUrl":"https://doi.org/10.1515/acgeo-2016-0039","url":null,"abstract":"The aim of this paper is to describe a managing system for a unique Romanian database of historical seismograms and complementary documentation (metadata) and its dissemination and analysis procedure. For this study, 5188 historical seismograms recorded between 1903 and 1957 by the Romanian seismological observatories (Bucharest-Filaret, Focşani, Bacău, Vrincioaia, Câmpulung-Muscel, Iaşi) were used. In order to reconsider the historical instrumental data, the analog seismograms are converted to digital images and digital waveforms (digitization/ vectorialisation). First, we applied a careful scanning procedure of the seismograms and related material (seismic bulletins, station books, etc.). In a next step, the high resolution scanned seismograms will be processed to obtain the digital/numeric waveforms. We used a Colortrac Smartlf Cx40 scanner which provides images in TIFF or JPG format. For digitization the algorithm Teseo2 developed by the National Institute of Geophysics and Volcanology in Rome (Italy), within the framework of the SISMOS Project, will be used.","PeriodicalId":50898,"journal":{"name":"Acta Geophysica","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/acgeo-2016-0039","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67088567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Palaeomagnetism of Middle Ordovician Carbonate Sequence, Vaivara Sinimäed Area, Northeast Estonia, Baltica 波罗的海爱沙尼亚东北部Vaivara Sinimäed地区中奥陶世碳酸盐岩层序古地磁
IF 2.3 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2016-12-02 DOI: 10.1515/acgeo-2016-0066
J. Plado, U. Preeden, A. Jõeleht, L. Pesonen, S. Mertanen
The hill range of Vaivara Sinimäed in northeast Estonia consists of several narrow east- to northeast-trending glaciotectonic fold structures. The folds include tilted (dips 4–75°) Middle Ordovician (early Darriwilian) layered carbonate strata that were studied by mineralogical, palaeomagnetic, and rock magnetic methods in order to specify the postsedimentational history of the area and to obtain a better control over the palaeogeographic position of Baltica during the Ordovician. Mineralogical studies revealed that (titano)magnetite, hematite, and goethite are carriers of magnetization. Based on data from 5 sites that positively passed a DC tilt test, a south-easterly downward directed component A (Dref = 154.6°± 15.3°, Iref = 60.9°± 9.7°) was identified. The component is carried by (titano)magnetite, dates to the Middle Ordovician (Plat = 17.9°, Plon = 47.3°, K = 46.7, A95 = 11.3°), and places Baltica at mid-southerly latitudes. Observations suggest that in sites that do not pass the tilt test, the glaciotectonic event has caused some rotation of blocks around their vertical axis.
爱沙尼亚东北部的Vaivara Sinimäed山脉由几个狭窄的东至东北走向的冰川构造褶皱结构组成。褶皱包括倾斜(倾角4 ~ 75°)中奥陶世(Darriwilian早期)的层状碳酸盐岩地层,通过矿物学、古地磁和岩石磁等方法对其进行了研究,以明确该地区的沉积后历史,更好地控制波罗的海奥陶世的古地理位置。矿物学研究表明,(钛)磁铁矿、赤铁矿和针铁矿是磁化的载体。根据5个通过直流倾斜测试的位点的数据,确定了东南向下方向的分量a (Dref = 154.6°±15.3°,Iref = 60.9°±9.7°)。该成分由(钛)磁铁矿携带,年代为中奥陶世(plat= 17.9°,Plon = 47.3°,K = 46.7, A95 = 11.3°),表明波罗的海位于中南纬度。观测结果表明,在没有通过倾斜测试的地点,冰川构造事件导致了一些块体围绕其垂直轴的旋转。
{"title":"Palaeomagnetism of Middle Ordovician Carbonate Sequence, Vaivara Sinimäed Area, Northeast Estonia, Baltica","authors":"J. Plado, U. Preeden, A. Jõeleht, L. Pesonen, S. Mertanen","doi":"10.1515/acgeo-2016-0066","DOIUrl":"https://doi.org/10.1515/acgeo-2016-0066","url":null,"abstract":"The hill range of Vaivara Sinimäed in northeast Estonia consists of several narrow east- to northeast-trending glaciotectonic fold structures. The folds include tilted (dips 4–75°) Middle Ordovician (early Darriwilian) layered carbonate strata that were studied by mineralogical, palaeomagnetic, and rock magnetic methods in order to specify the postsedimentational history of the area and to obtain a better control over the palaeogeographic position of Baltica during the Ordovician. Mineralogical studies revealed that (titano)magnetite, hematite, and goethite are carriers of magnetization. Based on data from 5 sites that positively passed a DC tilt test, a south-easterly downward directed component A (Dref = 154.6°± 15.3°, Iref = 60.9°± 9.7°) was identified. The component is carried by (titano)magnetite, dates to the Middle Ordovician (Plat = 17.9°, Plon = 47.3°, K = 46.7, A95 = 11.3°), and places Baltica at mid-southerly latitudes. Observations suggest that in sites that do not pass the tilt test, the glaciotectonic event has caused some rotation of blocks around their vertical axis.","PeriodicalId":50898,"journal":{"name":"Acta Geophysica","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/acgeo-2016-0066","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67090283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
The Influence of a Local Fault Zone on High Energy Tremor Occurrence During Longwall Mining of a Coal Seam 局部断裂带对煤层长壁开采中高能震颤发生的影响
IF 2.3 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2016-12-02 DOI: 10.1515/acgeo-2016-0040
Ł. Wojtecki, M. Knopik, W. Zuberek
Underground mining of coal seams in the Upper Silesian Coal Basin in Poland is accompanied by seismic activity of varying magnitude. The investigations which have been performed for several years distinguished high energy mine tremors connected directly with mining or coupled with geological structures, such as large faults. In mined seams, local fault zones occur. Faults in these zones are usually small, with throws comparable with coal seams thicknesses. Local fault zone may be responsible for the occurrence of high energy tremors as well as large faults, as presented in this article. An analysis of source mechanism of high energy tremors generated during longwall mining of the coal seam No. 510, with presence of a local fault zone, in one of the Polish hard coal mines in the Upper Silesian Coal Basin was performed. For this purpose, the seismic moment tensor inversion method was used. In most of foci, the process of shear predominated. Determined nodal plane parameters were correlated with parameters of faults forming the local fault zone. High energy tremors were generated mostly by dislocations on faults of the local fault zone. Weakening of roof rocks in the neighborhood of local fault zone takes an important role too, and was responsible for share of implosion in the focal mechanism.
波兰上西里西亚煤盆地煤层的地下开采伴随着不同震级的地震活动。几年来进行的调查区分出与采矿直接相关或与地质构造(如大断层)耦合的高能矿震。在开采的煤层中,会出现局部断裂带。这些地区的断层通常很小,抛物厚度与煤层厚度相当。局部断裂带可能是高能地震和大断层发生的原因,正如本文所介绍的那样。对上西里西亚煤盆地波兰硬煤矿510号煤层长壁开采过程中存在局部断裂带的高能地震震源机制进行了分析。为此,采用地震矩张量反演方法。在大多数震源中,剪切过程占主导地位。确定的节点面参数与形成局部断裂带的断层参数相关。高能地震主要由局部断裂带断层上的位错引起。局部断裂带附近顶板的弱化也起着重要作用,并对内爆在震源机制中的份额负责。
{"title":"The Influence of a Local Fault Zone on High Energy Tremor Occurrence During Longwall Mining of a Coal Seam","authors":"Ł. Wojtecki, M. Knopik, W. Zuberek","doi":"10.1515/acgeo-2016-0040","DOIUrl":"https://doi.org/10.1515/acgeo-2016-0040","url":null,"abstract":"Underground mining of coal seams in the Upper Silesian Coal Basin in Poland is accompanied by seismic activity of varying magnitude. The investigations which have been performed for several years distinguished high energy mine tremors connected directly with mining or coupled with geological structures, such as large faults. In mined seams, local fault zones occur. Faults in these zones are usually small, with throws comparable with coal seams thicknesses. Local fault zone may be responsible for the occurrence of high energy tremors as well as large faults, as presented in this article. An analysis of source mechanism of high energy tremors generated during longwall mining of the coal seam No. 510, with presence of a local fault zone, in one of the Polish hard coal mines in the Upper Silesian Coal Basin was performed. For this purpose, the seismic moment tensor inversion method was used. In most of foci, the process of shear predominated. Determined nodal plane parameters were correlated with parameters of faults forming the local fault zone. High energy tremors were generated mostly by dislocations on faults of the local fault zone. Weakening of roof rocks in the neighborhood of local fault zone takes an important role too, and was responsible for share of implosion in the focal mechanism.","PeriodicalId":50898,"journal":{"name":"Acta Geophysica","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/acgeo-2016-0040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67088663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Some Probabilistic and Statistical Properties of the Seismic Regime of Zemmouri (Algeria) Seismoactive Zone 泽穆里(阿尔及利亚)地震活动性带地震动态的一些概率和统计性质
IF 2.3 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2016-12-02 DOI: 10.1515/acgeo-2016-0049
K. Baddari, F. Bellalem, I. Baddari, Said Makdeche
Statistical tests have been used to adjust the Zemmouri seismic data using a distribution function. The Pareto law has been used and the probabilities of various expected earthquakes were computed. A mathematical expression giving the quantiles was established. The extreme values limiting law confirmed the accuracy of the adjustment method. Using the moment magnitude scale, a probabilistic model was made to predict the occurrences of strong earthquakes. The seismic structure has been characterized by the slope of the recurrence plot γ, fractal dimension D, concentration parameter Ksr, Hurst exponents Hr and Ht. The values of D, γ, Ksr, Hr, and Ht diminished many months before the principal seismic shock (M = 6.9) of the studied seismoactive zone has occurred. Three stages of the deformation of the geophysical medium are manifested in the variation of the coefficient G% of the clustering of minor seismic events.
利用分布函数对泽穆里地震资料进行了统计检验。运用了帕累托定律,计算了各种预期地震的概率。建立了给出分位数的数学表达式。极值限制规律证实了平差方法的准确性。利用矩震级,建立了预测强震发生的概率模型。用递归图的斜率γ、分形维数D、浓度参数Ksr、Hurst指数Hr和Ht对地震构造进行了表征。D、γ、Ksr、Hr和Ht值在研究的地震活动性带发生主震(M = 6.9)前几个月就减小了。地球物理介质变形的三个阶段表现在小地震事件聚类系数G%的变化上。
{"title":"Some Probabilistic and Statistical Properties of the Seismic Regime of Zemmouri (Algeria) Seismoactive Zone","authors":"K. Baddari, F. Bellalem, I. Baddari, Said Makdeche","doi":"10.1515/acgeo-2016-0049","DOIUrl":"https://doi.org/10.1515/acgeo-2016-0049","url":null,"abstract":"Statistical tests have been used to adjust the Zemmouri seismic data using a distribution function. The Pareto law has been used and the probabilities of various expected earthquakes were computed. A mathematical expression giving the quantiles was established. The extreme values limiting law confirmed the accuracy of the adjustment method. Using the moment magnitude scale, a probabilistic model was made to predict the occurrences of strong earthquakes. The seismic structure has been characterized by the slope of the recurrence plot γ, fractal dimension D, concentration parameter Ksr, Hurst exponents Hr and Ht. The values of D, γ, Ksr, Hr, and Ht diminished many months before the principal seismic shock (M = 6.9) of the studied seismoactive zone has occurred. Three stages of the deformation of the geophysical medium are manifested in the variation of the coefficient G% of the clustering of minor seismic events.","PeriodicalId":50898,"journal":{"name":"Acta Geophysica","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/acgeo-2016-0049","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67089777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Influence of Elevation Data Source on 2D Hydraulic Modelling 高程数据源对二维水力建模的影响
IF 2.3 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2016-12-02 DOI: 10.1515/acgeo-2016-0030
K. Bakuła, Mateusz StĘpnik, Z. Kurczynski
The aim of this paper is to analyse the influence of the source of various elevation data on hydraulic modelling in open channels. In the research, digital terrain models from different datasets were evaluated and used in two-dimensional hydraulic models. The following aerial and satellite elevation data were used to create the representation of terrain–digital terrain model: airborne laser scanning, image matching, elevation data collected in the LPIS, EuroDEM, and ASTER GDEM. From the results of five 2D hydrodynamic models with different input elevation data, the maximum depth and flow velocity of water were derived and compared with the results of the most accurate ALS data. For such an analysis a statistical evaluation and differences between hydraulic modelling results were prepared. The presented research proved the importance of the quality of elevation data in hydraulic modelling and showed that only ALS and photogrammetric data can be the most reliable elevation data source in accurate 2D hydraulic modelling.
本文的目的是分析各种高程数据来源对明渠水力建模的影响。在研究中,对来自不同数据集的数字地形模型进行了评估,并将其用于二维水力模型。使用以下航空和卫星高程数据来创建地形数字地形模型的表示:机载激光扫描,图像匹配,在LPIS, EuroDEM和ASTER GDEM中收集的高程数据。从5个不同输入高程数据的二维水动力模型的结果出发,导出了最大水深和水流速度,并与最精确的ALS数据结果进行了比较。为了进行这样的分析,准备了统计评估和水力模拟结果之间的差异。本研究证明了高程数据质量在水力建模中的重要性,并表明只有ALS和摄影测量数据才能成为精确的二维水力建模中最可靠的高程数据源。
{"title":"Influence of Elevation Data Source on 2D Hydraulic Modelling","authors":"K. Bakuła, Mateusz StĘpnik, Z. Kurczynski","doi":"10.1515/acgeo-2016-0030","DOIUrl":"https://doi.org/10.1515/acgeo-2016-0030","url":null,"abstract":"The aim of this paper is to analyse the influence of the source of various elevation data on hydraulic modelling in open channels. In the research, digital terrain models from different datasets were evaluated and used in two-dimensional hydraulic models. The following aerial and satellite elevation data were used to create the representation of terrain–digital terrain model: airborne laser scanning, image matching, elevation data collected in the LPIS, EuroDEM, and ASTER GDEM. From the results of five 2D hydrodynamic models with different input elevation data, the maximum depth and flow velocity of water were derived and compared with the results of the most accurate ALS data. For such an analysis a statistical evaluation and differences between hydraulic modelling results were prepared. The presented research proved the importance of the quality of elevation data in hydraulic modelling and showed that only ALS and photogrammetric data can be the most reliable elevation data source in accurate 2D hydraulic modelling.","PeriodicalId":50898,"journal":{"name":"Acta Geophysica","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/acgeo-2016-0030","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67088509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Hybrid-Empirical Ground Motion Estimations for Georgia 格鲁吉亚混合经验地面运动估计
IF 2.3 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2016-12-02 DOI: 10.1515/acgeo-2016-0048
N. Tsereteli, A. Askan, H. Hamzehloo
Ground motion prediction equations are essential for several purposes ranging from seismic design and analysis to probabilistic seismic hazard assessment. In seismically active regions without sufficiently strong ground motion data to build empirical models, hybrid models become vital. Georgia does not have sufficiently strong ground motion data to build empirical models. In this study, we have applied the host-totarget method in two regions in Georgia with different source mechanisms. According to the tectonic regime of the target areas, two different regions are chosen as host regions. One of them is in Turkey with the dominant strike-slip source mechanism, while the other is in Iran with the prevalence of reverse-mechanism events. We performed stochastic finite-fault simulations in both host and target areas and employed the hybrid-empirical method as introduced in Campbell (2003). An initial set of hybrid empirical ground motion estimates is obtained for PGA and SA at selected periods for Georgia.
从地震设计和分析到概率地震灾害评估,地震动预测方程在许多方面都是必不可少的。在没有足够强的地面运动数据来建立经验模型的地震活跃地区,混合模型变得至关重要。格鲁吉亚没有足够强的地面运动数据来建立经验模型。在这项研究中,我们在格鲁吉亚的两个不同来源机制的地区应用了宿主-目标方法。根据靶区的构造格局,选择了两个不同的区域作为寄主区。其中一个位于土耳其,走滑震源机制占优势,另一个位于伊朗,逆机制事件盛行。我们在宿主和目标区域进行了随机有限故障模拟,并采用Campbell(2003)介绍的混合经验方法。在格鲁吉亚选定的时期,获得了PGA和SA的初始混合经验地震动估计。
{"title":"Hybrid-Empirical Ground Motion Estimations for Georgia","authors":"N. Tsereteli, A. Askan, H. Hamzehloo","doi":"10.1515/acgeo-2016-0048","DOIUrl":"https://doi.org/10.1515/acgeo-2016-0048","url":null,"abstract":"Ground motion prediction equations are essential for several purposes ranging from seismic design and analysis to probabilistic seismic hazard assessment. In seismically active regions without sufficiently strong ground motion data to build empirical models, hybrid models become vital. Georgia does not have sufficiently strong ground motion data to build empirical models. In this study, we have applied the host-totarget method in two regions in Georgia with different source mechanisms. According to the tectonic regime of the target areas, two different regions are chosen as host regions. One of them is in Turkey with the dominant strike-slip source mechanism, while the other is in Iran with the prevalence of reverse-mechanism events. We performed stochastic finite-fault simulations in both host and target areas and employed the hybrid-empirical method as introduced in Campbell (2003). An initial set of hybrid empirical ground motion estimates is obtained for PGA and SA at selected periods for Georgia.","PeriodicalId":50898,"journal":{"name":"Acta Geophysica","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/acgeo-2016-0048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67089774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Recent Efforts Toward the Establishment of the Lonjsko Polje Geomagnetic Observatory 为建立Lonjsko Polje地磁观测站所作的最新努力
IF 2.3 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2016-12-02 DOI: 10.1515/acgeo-2016-0051
I. Mandić, Eugen Vujić, B. Heilig, I. Pelajić, D. Herak
More than ten years ago, the Geophysical Institute initiated the installation of a geomagnetic observatory in Croatia. Over the past decade, extensive surveys and studies have been conducted in order to determine the proper location for the observatory. Finally, in 2012, the observatory was established in Lonjsko Polje. This paper presents the first data recorded in the period 2012.5-2015.0. Also presented are the technical aspects and data processing techniques of this remotely operated observatory. Analysis of data quality and comparison with data from the surrounding INTERMAGNET observatories is discussed in detail. Although remote observatories cannot provide the ideal environment for magnetometers, the obtained results accentuate the potential of the new observatory to provide high-quality data. The establishment of this observatory paves the way for scientific and professional development of geomagnetism in Croatia.
十多年前,地球物理研究所开始在克罗地亚安装地磁观测站。在过去的十年里,为了确定天文台的合适位置,进行了广泛的调查和研究。最终,在2012年,天文台在Lonjsko Polje建立。本文给出了2012.5-2015.0期间记录的第一个数据。此外,还介绍了这个远程操作天文台的技术方面和数据处理技术。详细讨论了数据质量分析以及与周边INTERMAGNET天文台数据的比较。虽然远程天文台不能为磁力计提供理想的环境,但获得的结果强调了新天文台提供高质量数据的潜力。这个观测站的建立为克罗地亚地磁的科学和专业发展铺平了道路。
{"title":"Recent Efforts Toward the Establishment of the Lonjsko Polje Geomagnetic Observatory","authors":"I. Mandić, Eugen Vujić, B. Heilig, I. Pelajić, D. Herak","doi":"10.1515/acgeo-2016-0051","DOIUrl":"https://doi.org/10.1515/acgeo-2016-0051","url":null,"abstract":"More than ten years ago, the Geophysical Institute initiated the installation of a geomagnetic observatory in Croatia. Over the past decade, extensive surveys and studies have been conducted in order to determine the proper location for the observatory. Finally, in 2012, the observatory was established in Lonjsko Polje. This paper presents the first data recorded in the period 2012.5-2015.0. Also presented are the technical aspects and data processing techniques of this remotely operated observatory. Analysis of data quality and comparison with data from the surrounding INTERMAGNET observatories is discussed in detail. Although remote observatories cannot provide the ideal environment for magnetometers, the obtained results accentuate the potential of the new observatory to provide high-quality data. The establishment of this observatory paves the way for scientific and professional development of geomagnetism in Croatia.","PeriodicalId":50898,"journal":{"name":"Acta Geophysica","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/acgeo-2016-0051","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67089817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Application of Multichannel Analysis of Surface Waves to S-Phase Wave Anisotropy Estimation 多通道表面波分析在s相波各向异性估计中的应用
IF 2.3 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2016-12-02 DOI: 10.1515/acgeo-2016-0058
I. Stan-Kłeczek, M. Mendecki
The Multichannel Analysis of Surface Waves (MASW) is an increasingly used technique for recognition of a shallow geological structure and estimation of geotechnical parameters, e.g., S-wave velocity, layer density, layer thickness, shear modulus, estimated P-wave velocity, and estimated Poisson ratio. MASW surveys were carried out in two limestone quarries in the southern part of Poland. The experimental areas are characterised by a simple geological structure: consolidated Triassic limestone. Measurement profiles were arranged as a shapely six-pointed star. For each survey line, 12 geophones with 2-meter (Deposit 1) and 3-meter (Deposit 2) spacing were applied. The research allowed to compare P- and S-wave velocity changes with the main crack systems in the studied rock masses.
多通道表面波分析(MASW)技术越来越多地用于识别浅层地质构造和估计岩土参数,如横波速度、层密度、层厚度、剪切模量、估计纵波速度和估计泊松比。在波兰南部的两个石灰石采石场进行了MASW调查。实验区的特点是地质构造简单:固结的三叠纪石灰岩。测量轮廓被排列成一个有形状的六角星。对于每条测量线,分别使用间距为2米(沉积物1)和3米(沉积物2)的12个检波器。该研究允许比较研究岩体中主要裂缝系统的纵波和横波速度变化。
{"title":"Application of Multichannel Analysis of Surface Waves to S-Phase Wave Anisotropy Estimation","authors":"I. Stan-Kłeczek, M. Mendecki","doi":"10.1515/acgeo-2016-0058","DOIUrl":"https://doi.org/10.1515/acgeo-2016-0058","url":null,"abstract":"The Multichannel Analysis of Surface Waves (MASW) is an increasingly used technique for recognition of a shallow geological structure and estimation of geotechnical parameters, e.g., S-wave velocity, layer density, layer thickness, shear modulus, estimated P-wave velocity, and estimated Poisson ratio. MASW surveys were carried out in two limestone quarries in the southern part of Poland. The experimental areas are characterised by a simple geological structure: consolidated Triassic limestone. Measurement profiles were arranged as a shapely six-pointed star. For each survey line, 12 geophones with 2-meter (Deposit 1) and 3-meter (Deposit 2) spacing were applied. The research allowed to compare P- and S-wave velocity changes with the main crack systems in the studied rock masses.","PeriodicalId":50898,"journal":{"name":"Acta Geophysica","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/acgeo-2016-0058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67090032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
New Relations of Water Saturation’s Calculus from Well Logs 测井资料中含水饱和度计算的新关系
IF 2.3 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2016-12-02 DOI: 10.1515/acgeo-2016-0063
I. Malureanu, T. Boaca, D. Neagu
The saturation in water or hydrocarbon is an important petrophysical parameter used for the evaluation of oil and gas reservoirs. It represents the amount of hydrocarbons in a reservoir. There are many relations to determine the water saturation from well logs by using the physical properties of rocks. The accurate determination of the hydrocarbon formation or the water saturation is given by the accuracy of the parameters used for calculating and by the relations used.
水或烃饱和度是评价油气藏的重要岩石物性参数。它代表了储层中碳氢化合物的含量。利用岩石物理性质确定测井资料含水饱和度有许多关系。烃类地层或含水饱和度的准确测定取决于计算参数的准确性和关系式的准确性。
{"title":"New Relations of Water Saturation’s Calculus from Well Logs","authors":"I. Malureanu, T. Boaca, D. Neagu","doi":"10.1515/acgeo-2016-0063","DOIUrl":"https://doi.org/10.1515/acgeo-2016-0063","url":null,"abstract":"The saturation in water or hydrocarbon is an important petrophysical parameter used for the evaluation of oil and gas reservoirs. It represents the amount of hydrocarbons in a reservoir. There are many relations to determine the water saturation from well logs by using the physical properties of rocks. The accurate determination of the hydrocarbon formation or the water saturation is given by the accuracy of the parameters used for calculating and by the relations used.","PeriodicalId":50898,"journal":{"name":"Acta Geophysica","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/acgeo-2016-0063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67090397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Tectonic Plate Parameters Estimated in the International Terrestrial Reference Frame ITRF2008 Based on SLR Stations 基于单反站的国际地面参考框架ITRF2008中构造板块参数估算
IF 2.3 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2016-12-02 DOI: 10.1515/acgeo-2016-0072
K. Kraszewska, M. Jagoda, M. Rutkowska
This paper concerns an analysis of the accuracy of estimated parameters Ω (Φ, Λ, ω) which define the tectonic plate motions. The study is based on the velocities of station positions published by ITRF2008 for Satellite Laser Ranging (SLR) technique. The Eurasian, African, North American and Australian plates were used in the analysis. Influence of the number and location of stations on the plate surface on estimation accuracy of the tectonic plate motion parameters was discussed. The results were compared with the APKIM 2005 IGN model. In general, a remarkable concurrence agreement between our solutions and the APKIM 2005 model was found.
本文对确定构造板块运动的估计参数Ω (Φ, Λ, Ω)的精度进行了分析。该研究基于ITRF2008卫星激光测距(SLR)技术发布的站位速度。欧亚、非洲、北美和澳大利亚板块被用于分析。讨论了台站数目和台站位置对构造板块运动参数估计精度的影响。结果与APKIM 2005 IGN模型进行了比较。总的来说,我们的解决方案与APKIM 2005模型之间存在显著的一致性。
{"title":"Tectonic Plate Parameters Estimated in the International Terrestrial Reference Frame ITRF2008 Based on SLR Stations","authors":"K. Kraszewska, M. Jagoda, M. Rutkowska","doi":"10.1515/acgeo-2016-0072","DOIUrl":"https://doi.org/10.1515/acgeo-2016-0072","url":null,"abstract":"This paper concerns an analysis of the accuracy of estimated parameters Ω (Φ, Λ, ω) which define the tectonic plate motions. The study is based on the velocities of station positions published by ITRF2008 for Satellite Laser Ranging (SLR) technique. The Eurasian, African, North American and Australian plates were used in the analysis. Influence of the number and location of stations on the plate surface on estimation accuracy of the tectonic plate motion parameters was discussed. The results were compared with the APKIM 2005 IGN model. In general, a remarkable concurrence agreement between our solutions and the APKIM 2005 model was found.","PeriodicalId":50898,"journal":{"name":"Acta Geophysica","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/acgeo-2016-0072","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67090679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
期刊
Acta Geophysica
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1