Bathymetric and morphological maps (DP4.00132.001)

Bathymetric maps are obtained using hydroacoustic (sonar) instrumentation and interfaced with differential global positioning system (DGPS) mounted on a boat. Hydroacoustics are utilized to detect the depth of a water body, sediment characteristics as well as the presence or absence, approximate abundance, distribution, size, and behavior of underwater biota. For additional details, see the user guide, protocols, and science design listed in the Documentation section in this data product's details webpage.

Latency:
The expected time from data and/or sample collection in the field to data publication is as follows, for each of the data tables (in days) in the downloaded data package. See the Data Product User Guide for more information.

bat_fieldData: 60

bat_pointcollection: 60

bat_sonarRecord: 60

bat_processedSiteLevelSummary: 180

bat_processedSonarTrackData: 180

bat_processedVolumeData: 180

bat_processedHabitatResults: 180

bat_processedPlantCoverage: 180

bat_groundTruthPoints: 180

水深测量图（Bathymetric maps）通过水声（声呐）仪器采集，并与搭载于作业船只的差分全球定位系统（Differential Global Positioning System, DGPS）进行接口对接。水声探测技术可用于测定水体深度、沉积物特征，同时可识别水下生物的存在与否、近似丰度、分布范围、个体大小及行为模式。如需获取更多细节，请参阅本数据产品详情网页中“文档”板块所列的用户指南、操作规程与科学设计方案。

数据发布延迟周期：
针对下载数据包中的各数据表，从野外数据及/或样品采集至数据正式发布的预期耗时（单位：天）如下，详细信息请参见《数据产品用户指南》。
bat_fieldData：60
bat_pointcollection：60
bat_sonarRecord：60
bat_processedSiteLevelSummary：180
bat_processedSonarTrackData：180
bat_processedVolumeData：180
bat_processedHabitatResults：180
bat_processedPlantCoverage：180
bat_groundTruthPoints：180