vertical_SSS_seagrass_monitoring

These files include the acoustic data acquired from Posidonia oceanica meadows for the study entitled "Vertical configuration of a Side Scan Sonar for the monitoring of Posidonia oceanica meadows". The acoustic height of the canopy and the accumulated intensity for each surveyed site have been calculated from these data. The acoustic data are presented as follows: - In the case of Dénia measurements, the filenames correspond to the sites. D_1 includes only meadow part, not the bare seabed. - In the case of Calp measurements, the filenames correspond to sites followed by the number of repetition. - Every file contents the following: (1) echogram -> Intensity echograma (in dB re Pa) after applying the compensation of the geometrical spreading and attenuation losses. Columns are the pings. Rows are the samples in time, every one equivalent to 0.0122 m. (2) GPS -> latitude and longitude data for each ping, (EPSG:4326-WGS84).

本数据集包含为开展题为《侧扫声呐（Side Scan Sonar）垂直配置用于波西多尼亚海草（Posidonia oceanica）床监测》的研究而采集的波西多尼亚海草床声学数据。研究人员已基于这批声学数据，计算得到各调查点位的海草冠层声学高度与累积声强。本次公开的声学数据整理如下：
- 德尼亚（Dénia）组测量数据：文件名与调查点位一一对应，其中D_1仅包含海草床区域数据，不含裸露海床数据。
- 卡尔佩（Calp）组测量数据：文件名格式为“点位编号+重复次数”。
- 单个数据文件包含以下内容：
1. 声呐图像（echogram）：经几何扩散与衰减损耗补偿后的强度声呐图，单位为参考声压1帕的分贝值（dB re Pa）。文件的列对应声呐脉冲（ping），行对应时间域采样点，每个采样点的垂直间距为0.0122米。
2. GPS数据：各声呐脉冲对应的经纬度坐标，坐标系为EPSG:4326-WGS84。