oce (version 0.1-76)

section: Sample seawater (CTD) section

Description

A CTD section running the length of Halifax Harbour.

Usage

data(section)

format

The individual stations are available as section$station[[1]] through to section$station[[7]], each of which is an object of type ctd.

source

This section is based on measurements made during October of 2003 in Halifax Harbour by students in the Introduction to Physical Oceanography class at Dalhousie University. The course was taught Dan Kelley (the author of this package) and supervision at sea was provided by teaching assistant Natacha Bernier, at the time a PhD student at Dalhousie. Note the alteration of two station locations, to correct errors in transcribing field notes (e.g. a hand-written 8 was evidently typed as 3).

library(oce) stn08 <- ctd.trim(read.ctd("BED0308.CNV", station="8")) stn09 <- ctd.trim(read.ctd("BED0309.CNV", station="9")) stn10 <- ctd.trim(read.ctd("BED0310.CNV", station="10")) stn01 <- ctd.trim(read.ctd("BED0301.CNV", station="1")) stn11 <- ctd.trim(read.ctd("BED0311.CNV", station="11")) stn12 <- ctd.trim(read.ctd("BED0312.CNV", station="12")) stn12 <- oce.edit(stn12, "latitude", 44 + 39.894 / 60, reason="typo in lat minutes", person="Dan Kelley") stn13 <- ctd.trim(read.ctd("BED0313.CNV", station="13")) stn15 <- ctd.trim(read.ctd("BED0315.CNV", station="15")) stn15 <- oce.edit(stn15, "latitude", stn15$metadata$latitude + 1, reason="typo in lat degrees", person="Dan Kelley") section <- make.section(stn08, stn09, stn10, stn01, stn11, stn12, stn13, stn15) section <- oce.edit(section, "section.id", "Halifax-Harbour-2003-oct", person="Dan Kelley") section <- section.grid(section, p=seq(0,60,2)) data(coastline.hal) plot(section, coastline=coastline.hal, grid=TRUE) The stations cover a 14 km region running from station 308, near the Sackville River, seaward to station 315, at the entrance to the general Harbour, offshore of the aptly-named Point Pleasant Park.

References

A summary of the stations can be obtained from summary.section, and a plot can be created with plot.section.