Sediment physical properties (DP1.20197.001)

This data product contains the quality-controlled, native sampling resolution data from NEON's aquatic sediment collection and field metadata, as well as associated physical data (size and texture) provided by a contracted lab. Sediment field samples are collected in wadeable streams, rivers, and lakes 2 times per year (spring and fall). Samples are collected from several depositional zones, homogenized, subsampled, and shipped to an external lab. 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.

asc_externalLabSummary: 14

asc_fieldDataPoint: 30

asc_fieldDataStation: 30

asc_fieldDataZone: 30

asp_externalLabData: 90

本数据产品包含经质量管控的美国国家生态观测站网络（National Ecological Observatory Network, NEON）水生沉积物采集项目的原生采样分辨率数据与野外元数据，同时涵盖签约实验室提供的配套物理检测数据（粒径与质地）。

沉积物野外样品采集于可涉水溪流、河流与湖泊，每年开展2次采样（春季与秋季各1次）。样品从多个沉积带采集后，经均质化处理、分样，再寄送至外部实验室。如需获取更多详细信息，请参阅本数据产品详情网页的文档板块中列出的用户指南、实验规程与科学设计方案。

数据延迟说明：
下载数据包内各数据表从野外数据和/或样品采集到数据发布的预期时长（单位：天）如下，更多信息请查阅《数据产品用户指南》。

asc_externalLabSummary：14
asc_fieldDataPoint：30
asc_fieldDataStation：30
asc_fieldDataZone：30
asp_externalLabData：90