Table 1.
Information required for the three data reports for mitigation reporting during seismic survey operations in the northern Gulf of Mexico as described in BOEM NTL 2016-G02.
Table 2.
Categories of cetacean species as defined in the Notice to Lessees (NTL).
The most commonly identified species by PSOs within each NTL category are shown in bold-faced type.
Table 3.
List of cetacean species categorized for low, medium, and high frequency auditory groups based on regulatory definitions.
The most commonly reported species within each auditory category are shown in bold-face type.
Table 4.
List of non-regulatory faunal subgroups analyzed within the mid-frequency auditory grouping.
Table 5.
Statistical investigations conducted on PSO observations†.
Table 6.
Total number of observations (n) for the closest observed point of approach (CPA) for each NTL category.
Table 7.
Summary of visual observations of cetaceans, excluding unidentified species, during seismic mitigation surveys in the Gulf of Mexico 2002–2015.
Table 8.
Total number (n) and percentage (%) of closest point of approach observations per airgun activity level for each data truncation distance (m) and NTL category examined.
Table 9.
Total number (n) and percentage (%) of closest point of approach observations per airgun activity level and auditory category examined1.
Table 10.
Summary of observed whale CPA distances that were greater or less when comparing each airgun activity level.
Table 11.
Back transformed mean, and raw mean (± standard deviation [SD]) distance (m) of all dolphin species closest point of approach observations within 2,500 m of seismic survey airgun arrays.
Table 12.
Summary of observed dolphin CPA distances that were greater or less when comparing each airgun activity level.
Table 13.
Back transformed mean, and raw mean (± standard deviation [SD]) distance (m) of mid-frequency cetaceans closest point of approach observations within 2,500 m of seismic survey airgun arrays.
Table 14.
Number of observations of each mid-frequency faunal group per airgun activity level.
Table 15.
Back transformed mean, and raw mean (± standard deviation [SD]) distance (m) of the bottlenose dolphin and pantropical dolphin closest point of approach observations within 2,500 m of seismic survey airgun arrays.
Table 16.
Back transformed mean, and raw mean (± standard deviation [SD]) distance (m) of the blackfish faunal grouping’s closest point of approach observations within 2,500 m of seismic survey airgun arrays.