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6,783 results for “orientator”
Fraxinus quadrangulata (Oleaceae) - leaf - showing orientation on twig
Image of Fraxinus quadrangulata (Oleaceae) - leaf - showing orientation on twig
Fraxinus quadrangulata (Oleaceae) - leaf - showing orientation on twig
Image of Fraxinus quadrangulata (Oleaceae) - leaf - showing orientation on twig
Betula papyrifera (Betulaceae) - leaf - showing orientation on twig
Image of Betula papyrifera (Betulaceae) - leaf - showing orientation on twig
Celtis sp. (Ulmaceae) - leaf - showing orientation on twig
Image of Celtis sp. (Ulmaceae) - leaf - showing orientation on twig
Quercus alba (Fagaceae) - leaf - showing orientation on twig
Image of Quercus alba (Fagaceae) - leaf - showing orientation on twig
Celtis (Cannabaceae) - leaf - showing orientation on twig
Image of Celtis (Cannabaceae) - leaf - showing orientation on twig
Quercus alba (Fagaceae) - leaf - showing orientation on twig
Image of Quercus alba (Fagaceae) - leaf - showing orientation on twig
Quercus virginiana (Fagaceae) - leaf - showing orientation on twig
Image of Quercus virginiana (Fagaceae) - leaf - showing orientation on twig
Quercus virginiana (Fagaceae) - leaf - showing orientation on twig
Image of Quercus virginiana (Fagaceae) - leaf - showing orientation on twig
Maclura pomifera (Moraceae) - twig - orientation of petioles
Image of Maclura pomifera (Moraceae) - twig - orientation of petioles
Maclura pomifera (Moraceae) - twig - orientation of petioles
Image of Maclura pomifera (Moraceae) - twig - orientation of petioles
Maclura pomifera (Moraceae) - leaf - showing orientation on twig
Image of Maclura pomifera (Moraceae) - leaf - showing orientation on twig
Strophostyles (Fabaceae) - twig - orientation of petioles
Image of Strophostyles (Fabaceae) - twig - orientation of petioles
Strophostyles (Fabaceae) - twig - orientation of petioles
Image of Strophostyles (Fabaceae) - twig - orientation of petioles
Strophostyles (Fabaceae) - twig - orientation of petioles
Image of Strophostyles (Fabaceae) - twig - orientation of petioles
Carya ovata (Juglandaceae) - leaf - showing orientation on twig
Image of Carya ovata (Juglandaceae) - leaf - showing orientation on twig
Carya glabra (Juglandaceae) - leaf - showing orientation on twig
Image of Carya glabra (Juglandaceae) - leaf - showing orientation on twig
Zelkova serrata (Ulmaceae) - leaf - showing orientation on twig
Image of Zelkova serrata (Ulmaceae) - leaf - showing orientation on twig
Ulmus serotina (Ulmaceae) - leaf - showing orientation on twig
Image of Ulmus serotina (Ulmaceae) - leaf - showing orientation on twig
CSRM Level 2 dataset: Seismometer orientation measurements of broadband seismic stations in the China Digital Seismograph Network
<p>This dataset contains detailed information on the azimuths of more than one thousand stations in the China Digital Seismic Network (CDSN) since 2014. Deng <em>et al</em>. (2024) utilized 5,456,816 three-component waveform data recorded by 1,056 broadband seismic stations of the CDSN from 2014 to 2022 to evaluate and correct the azimuths of the network. The primary research method employed was far-field <em>P</em>-wave polarization analysis, including principal component analysis and minimum tangential energy methods. By integrating the advantages of these two methods, they conducted a detailed analysis of the azimuths across the CDSN and carried out in-depth examinations and cause analyses for stations with significant azimuth deviations (>5°). Through a comprehensive analysis of the calculation results, network operation logs, and on-site inspections, they obtained detailed information on the azimuths of more than one thousand stations in the CDSN since 2014. <strong>Appendix I</strong> lists azimuth deviations for 956 stations, while <strong>Appendix II</strong> documents temporal variations in the azimuths for 104 stations.</p> <p>本数据库包含自 2014 年以来中国数字地震台网超过千个台站方位角的详细信息。Deng等 (2024) 依托中国数字地震台网 2014 至 2022 年间 1056 个宽频带地震台站所记录的 5,456,816 个三分量波形数据, 开展了台网方位角的评估与校正工作。研究方法主要采用远场 <em>P</em> 波偏振分析, 包括主成分分析和最小切向能量法。结合这两种方法的优点, 他们对中国数字地震台网的方位角进行了详细分析, 并对方位角偏差较大的台站 (>5°) 进行了深入检查与原因分析。通过对计算结果、台网运维日志及现场检查的综合分析, 他们获得了自 2014 年以来中国数字地震台网超过千个台站方位角的详细信息 (<strong>附件一</strong>列出了 956 个台站的方位角偏差, <strong>附件二</strong>记录了 104 个随时间变化的方位角信息) 。</p> <p><strong>Reference</strong>: Deng, W., Han, G., Li, J., & Sun, L. Seismometer Orientation Measurements of Broadband Seismic Stations in the China Digital Seismograph Network. <strong><a href="https://doi.org/10.1785/0120240075">Paper link</a></strong></p> <p>If you face any problem or issue in the usage of this dataset, please feel free to communicate with the corresponding author Juan Li (<strong>juanli@mail.iggcas.ac.cn</strong>).</p>
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