SEAFOS seal census survey at Filchner Outflow System during campaign FIL2014

Autoria(s): Bester, Marthán N; Oosthuizen, W Christiaan; Bornemann, Horst
Cobertura

MEDIAN LATITUDE: -75.150590 * MEDIAN LONGITUDE: -34.686278 * SOUTH-BOUND LATITUDE: -77.829620 * WEST-BOUND LONGITUDE: -42.741860 * NORTH-BOUND LATITUDE: -73.315892 * EAST-BOUND LONGITUDE: -25.953078 * DATE/TIME START: 2013-11-15T10:39:26 * DATE/TIME END: 2015-11-16T15:49:39
Data(s)

25/11/2015
Formato

application/zip, 5 datasets
Identificador

https://doi.pangaea.de/10.1594/PANGAEA.855259

doi:10.1594/PANGAEA.855259
Idioma(s)

en
Publicador

PANGAEA
Relação

Documentation of Seal survey at the Filchner Outflow System (SEAFOS) with Polarstern Helicopter during campaign FIL2014 (URI: hdl:10013/epic.46338.d001)
Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted
Fonte

Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven
Palavras-Chave #Altitude; ALTITUDE; Area; Area/locality; Calculated; Census strip-width; Comment; Counted by observer 1; Counted by observer 2; Counted by observer 3; Counting from image; CR2 - Canon raw format; Date/Time; DATE/TIME; Date/time end; Date/time start; Distance; Distance interval where the observation was made. Bin intervals: Left truncation at 35.2 m; Distance sampling options; Horst Bornemann made all observations from the right of the aircraft. Only conventional distance sampling (CDS) is an option. Marthan Bester and Chris Oosthuizen were independent observers on the left of the aircraft. Their data may be analysed using mark-recapture distance sampling (MRDS).; Duration; End of transect [GMT]; Event; File size; Flight altitude; Floe; Height bin; Ice floe size; Ice type; ID; Identification; Image; Image number; Ind No; Interval; Interval comments; Investigator; JPEG; l; Label; Latitude; LATITUDE; Left or right side of the helicopter; Length; Lobodon carcinophaga or Leptonychotes weddellii or unidentified seal if no certain species identification could have been made or empty cell if no data are available; Longitude; LONGITUDE; Marine Mammal Tracking; Mean detection distance; Distance to the centre of each bin; Method; Method comment; MMT; MRDS inconsistancies; Cases where Marthan Bester and Chris Oosthuizen reported different seal species observed (Crabeater / Weddell / Unidentified), or where the observations were not made in the same bin (but in adjacent bins); or where the size of the group counted differed.; No of seals validated; Number of individuals; Object; Unique integer for each seal sighted.; Observation; Observation time [GMT]; Observer; Sample code/label; Seals; Segment; Observers divided each transect into 3 minute segments, while conducting the survey. Each observation can be linked to a segment. Three environmental (ice) variables were also collected for each segment while in the air.; Segment effort; Segment end; Segment end [GMT]; Segment ice concentration; Segment ice surface; Rough or smooth; occasionally empty cell is segment in only associated with open water.; Segment label; SEAFOS_yyyy/mm/dd_transect_segment; Segment start; Segment start [GMT]; Side; Size group; Species; Start of transect [GMT]; Stratum; Subjective scoring of ice concentration while flying. Open water; Brash Ice (Wreckage of ice); Cake Ice <10 m; Small floes 10-100 m; Medium floes 100-500 m; Large floes >500 m; Target Altitude; Temperature, air; Time of day; Time on effort (hh:mm:ss) per segment; Transect; Transect air temperature; Transect effort time [hh:mm:ss]; Transect end; Transect Length; Transect start; Transect visibility; Transect wind velocity; TTT; Uniform resource locator/link to image; Unique records; Only one of the duplicate sightings (of Marthan Bester and Chris Oosthuizen) have a 1; URL image; Visib; Visibility; Wind speed, true; WindSpTru
Tipo

Dataset
Acesso ao item digital