Hydrodynamic Model Output Used to Evaluate Chinook Salmon Movements and Distribution in the South Delta

This data release includes the output variables extracted from the UnTRIM Bay-Delta hydrodynamic model (hydrodynamic model) for use in evaluating the effects of hydrodynamics on the behavior of acoustically-tagged juvenile Chinook Salmon (Oncorhynchus tshawytscha) in the Sacramento-San Joaquin Delta. Work was funded by State Water Contractors (SWC) and completed by Anchor QEA; FlowWest, LLC; and University of Washington under a SWC 2023 Science Plan grant (study name Evaluation of the Influence of State Water Project and Central Valley Project on Chinook Salmon Movements and Distribution in the South Delta), contracted by SWC. Not all the hydrodynamic model output variables in the output provided with this memorandum were used in the final fish models used to analyze Chinook Salmon responses. Model output for additional variables and locations were included for completeness and to make these output files more broadly useful to researchers interested in other locations or variables in the Sacramento-San Joaquin Delta. Hydrodynamic model simulations were conducted for 2010, 2011, 2012, 2013, 2014, 2015, 2016, and 2017, with hydrodynamic model output variables provided at mostly the same locations for each period simulated. The years 2011 through 2016 were simulated previously for a prior project and model output provided through the Environmental Data Initiative (edi.1124.1). Files for these years were recreated from the prior simulations for this project to add an output location. Additional locations were added to the 2010 and 2017 simulations for the 2010 and 2017 hydrophone arrays, and thus 2010 and 2017 include additional model output, relative to 2011 through 2016. The model simulation for each year spanned the full period of Chinook Salmon detections in the telemetry data collected during that year.

本数据集发布内容包含从UnTRIM海湾-三角洲水动力模型（hydrodynamic model）中提取的输出变量，用于评估水动力条件对萨克拉门托-圣华金三角洲内携带声学标记的幼年奇努克鲑鱼（Oncorhynchus tshawytscha）行为的影响。本工作由州水利承包商（State Water Contractors, SWC）资助，由Anchor QEA、FlowWest有限责任公司以及华盛顿大学根据SWC 2023科学计划资助项目（项目名称：《州水利工程与中央河谷工程对南三角洲奇努克鲑鱼移动与分布的影响评估》）完成，该项目由SWC委托。本备忘录附带的输出数据中，并非所有水动力模型输出变量都被用于最终分析奇努克鲑鱼响应的鱼类模型中。为保证数据完整性并使这些输出文件能更广泛地服务于对萨克拉门托-圣华金三角洲其他区域或变量感兴趣的研究人员，本数据集额外包含了部分变量与点位的模型输出结果。水动力模型模拟时段覆盖2010、2011、2012、2013、2014、2015、2016及2017年，各模拟时段的模型输出变量采集点位基本一致。其中2011至2016年的模拟曾在既往项目中完成，相关模型输出曾通过环境数据倡议（Environmental Data Initiative, edi.1124.1）发布。本项目针对上述年份的模拟结果进行了重构，新增了一个输出点位。针对2010与2017年的模拟，本项目新增了对应年份水听器阵列的点位，因此相较于2011至2016年，2010与2017年的模型输出包含更多内容。各年度的模型模拟时段均覆盖了当年度遥测数据中记录的奇努克鲑鱼全部检测周期。