Invertebrate stable isotopes from samples collected at methane seeps off Southern California with the HOV Alvin from July 16-28, 2023 during R/V Atlantis cruise AT50-12

This dataset provides C and N stable isotope data for invertebrates collected by HOV Alvin from July 16-28, 2023 at methane seeps in Southern California during R/V Atlantis cruise AT50-12. There are also POC data for one surface and one near bottom water sample collected by CTD. δ13C and δ15N measurements were made on 0.2-4 mg dry-weight samples combusted using an elemental analyzer interfaced to a continuous flow isotope ratio mass spectrometer at the Stable Isotope Facility at the University of California, Davis (SIF-UCD).本数据集收录了2023年7月16日至28日，搭载亚特兰蒂斯号科考船（R/V Atlantis）执行AT50-12航次期间，由阿尔文号载人深潜器（HOV Alvin）在南加州甲烷渗漏区采集的无脊椎动物的碳、氮稳定同位素数据。 另包含通过温盐深仪（CTD）采集的1份表层海水与1份近底层海水样品的颗粒有机碳（Particulate Organic Carbon, POC）数据。 碳稳定同位素比值（δ¹³C）与氮稳定同位素比值（δ¹⁵N）的测定工作均在加州大学戴维斯分校稳定同位素实验室（Stable Isotope Facility at the University of California, Davis, SIF-UCD）完成：称取0.2~4 mg干重样品，使用与连续流同位素比值质谱仪联用的元素分析仪进行燃烧裂解，随后完成同位素比值测试。