CCES Data
CCES was a multidisciplinary survey of the marine ecosystem from the US-Canada border south to Northern Baja California, Mexico. Background information on this survey as well as preliminary analysis of beaked whale, sperm whale, and narrow band high frequency species are provided in (Simonis 2020). A map of tracklines is provided in Figure 1.
Data were analyzed following methods consistent with the Adrift data analysis, with slight modifications to address duty cycled data. The power spectral density plots (PSD) can be found online.
Each of the major odontocete groups were detected during the CCES study (Figure 2).
Blue whale detections were dominated by song, as the low hourly presence of D calls indicates that A/B (song) calls dominated the blue whale detections (fig-CCES_BlueAllBlueDFin20minke_HourlyPresence). There were a few minke whale detections in the later months of the survey. Detection of fin whales was dominated by 20 Hz calls (Figure 3). There were no Fin whale 40 Hz calls, or calls associated with Bryde’s, sei, or gray whales.
There were few hourly detections of humpback whales (hourly presence plots can be found in our GitHub Repository. Most of the CCES deployments were further offshore than the Adrift deployments, and this offshore distribution may be the reason for such low detection rates.
A complete list of successful drifting recorder deployments during the CCES survey are provided in Table C‑1. Sites include Humboldt (HUM), Point Arena (PTA), Morro Bay (MOB), Channel Islands (CHI), and Baja California Norte (BCN). See Figure 3.1 for more information on regions.