BCCZO -- Surface Water Chemistry -- (GG_SW_Array) -- Gordon Gulch -- (2008-2020)

Surface water samples were collected within the Boulder Creek Watershed in Gordon Gulch from 2009 to current. Throughout the year, samples were regularly collected at two stream sites and at two spring sites. During the spring and summer, daily samples were collected via autosampler. Samples were filtered by Boulder Creek CZO Water Chemistry Lab with 0.45µm and 1µm filters. Samples were analyzed for conductivity, major ions, alkalinity, nutrients and organics, and water isotopes. Major ions analyzed regularly included H+, Ca+, K+, Mg2+, Na+, Cl-, NO3-, SO4-, Si, and SiO2 and occasionally included NH4+, Al+, Fe+, Mn+. Nutrients and organics analyzed mainly included DOC, IN, DON, TDN, IP, DOP, and TDP. Water isotopes analyzed included O18 and D.

Sensor array IDs and descriptions-

GGL_SW_0, Sample Coll: Manual, Water Chemistry, Stream Water sampling site

GGL_SW_0_ISCO, Sample Coll: Automated, Water Chemistry, ISCO automatic water sampler

GGU_SW_0, Sample Coll: Manual, Water Chemistry, Stream Water sampling site

GGU_SW_0_ISCO, Sample Coll: Automated, Water Chemistry, ISCO automatic water sampler

GGU_SPW_1, Sample Coll: Manual, Water Chemistry, Stream Water sampling site

GGU_SPW_2, Sample Coll: Manual, Water Chemistry, Stream Water sampling site

*Data Includes Blanks, and time stamped ISCO samples e.g. GGL_SW_0_ISCO 1300, GGL_SW_0_ISCO 1500, etc.

2009年至今，研究团队于戈登峡谷（Gordon Gulch）内的博尔德溪流域（Boulder Creek Watershed）采集地表水样品。全年定期在2个溪流点位与2个泉水点位采集样品；春夏季则通过自动采样器每日采集样品。
样品由博尔德溪临界带观测站（Boulder Creek Critical Zone Observatory, CZO）水化学实验室采用0.45μm与1μm滤膜进行过滤处理。随后对样品开展多项指标检测，包括电导率、主要离子、碱度、营养盐与有机物，以及水同位素。常规检测的主要离子包括H⁺、Ca⁺、K⁺、Mg²⁺、Na⁺、Cl⁻、NO₃⁻、SO₄⁻、Si及SiO₂；偶测指标包含NH₄⁺、Al⁺、Fe⁺、Mn⁺。本次检测的营养盐与有机物指标主要包括溶解有机碳（Dissolved Organic Carbon, DOC）、无机氮（Inorganic Nitrogen, IN）、溶解有机氮（Dissolved Organic Nitrogen, DON）、总溶解氮（Total Dissolved Nitrogen, TDN）、无机磷（Inorganic Phosphorus, IP）、溶解有机磷（Dissolved Organic Phosphorus, DOP）及总溶解磷（Total Dissolved Phosphorus, TDP）。水同位素检测指标包括¹⁸O与D。

传感器阵列标识及说明如下：
GGL_SW_0：采样方式：手动；检测类型：水化学；采样点位：溪流地表水
GGL_SW_0_ISCO：采样方式：自动；检测类型：水化学；设备：ISCO自动水质采样器
GGU_SW_0：采样方式：手动；检测类型：水化学；采样点位：溪流地表水
GGU_SW_0_ISCO：采样方式：自动；检测类型：水化学；设备：ISCO自动水质采样器
GGU_SPW_1：采样方式：手动；检测类型：水化学；采样点位：溪流地表水
GGU_SPW_2：采样方式：手动；检测类型：水化学；采样点位：溪流地表水
*数据包含空白对照样品与带时间戳的ISCO自动采样样品，例如GGL_SW_0_ISCO 1300、GGL_SW_0_ISCO 1500等。