README



Getting Started
      
      To access the information contained on this disc, use a Web browser 
to open the file index.html. 

System Requirements
      
      This disc is readable on any computing platform that has standard 
Compact Disc (CD) driver software installed. The minimum software 
requirements are a Web browser and a text editor.

CD Organization
      
      This report is divided into six sections: Home, Acronyms and 
Abbreviations, Disc Contents, Methods, Data, Federal Geographic Data 
Committee (FGDC) Metadata, and Maps. Links at the top and bottom of each page 
provide access to these sections. This report contains links to the U.S. 
Geological Survey (USGS), collaborators, and other available resources if 
access to the Internet is available while viewing these documents.  
Geographic Information System (GIS) files, Hypertext Markup Language 
(HTML) files and images used to produce the Web pages, and this readme 
file are also included in this report.  The Disc Contents are as follows:

data/ 					Folder containing comma-separated value files and data key PDF file
					Identifier 'HLY1102' indicates the second mission of 2011 on the USCGC Healy

HLY1102_MICA.csv			MICA Data Taken Underway 

HLY1102_Discrete_Underway.csv		Discrete Sample Data Analyzed Underway 

HLY1002_Data_Description_Summary.pdf 	PDF format file of HLY1102 Data Descriptions 

HLY1102_Isotopes.csv 			Discrete isotope data analyzed at USF Stable Isotope Laboratory 

HLY1102_Underway_Data.csv 		HLY1102 Shipboard Sensor Underway Data 

html/					Folder containing HTML files for browsing dataset 

images/ 				Folder containing images used in HTML files 

acronyms.html 				HTML file containing a list of acronyms and abbreviations 

contents.html 				HTML file with directory of the report's content (this file) 

data.html 				HTML file with links to cruise data 

methods.html 				HTML file with data collection and processing methods 

maps.html				HTML file with links to map data 

metadata.html 				HTML file with links to metadata files 

metadata/ 				Folder containing metadata for cruise and trackline data 

HLY1102_MICA.xml 			XML metadata for MICA Data 

HLY1102_Discrete_Underway.xml 		XML metadata for Discrete Sample Data Analyzed Underway 

HLY1102_Isotopes.xml 			XML metadata for Isotopes Data 

HLY1102_Underway_Data.xml 		XML metadata for Shipboard Sensor Data

shp/ 					Parent folder for trackline shapefiles 

data/ 					Folder containing seawater chemistry shapefiles 

Healy_Continuous.zip			Compressed file containing shapefile of the Healy MICA Data 

Healy_Discrete.zip			Compressed file containing shapefile of the Discrete Sample Data 

CTD_Casts.zip				Compressed file containing shapefile of the CTD Data 

Arctic_Bathymetry.zip			Compressed file containing raster of the Arctic Ocean Bathymetry Data 

trackline/ 				Folder containing trackline shapefiles 

HLY1102Trackline.zip			Compressed file containing shapefile of the Healy Trackline Data 

index.html 				Index HTML file 


      
Project Summary
      
From August 15 to September 28, 2011, the United States Coast Guard Cutter 
(USCGC) Healy was part of an Extended Continental Shelf Project to 
determine the limits of the extended continental shelf in the Arctic. On 
a non-interference basis, a U.S. Geological Survey (USGS) and University 
of South Florida (USF) Ocean Acidification team participated on the cruise to 
collect baseline water data in the Arctic.  During the cruise the USGS 
collected approximately 350 discrete surface water samples in the Canada 
Basin for measurement of pH, carbonate ion concentration, total 
alkalinity/total carbon, nutrients (NH4, silica, PO4, and NO2+N), stable 
carbon and oxygen isotopic composition, elemental analysis, dissolved 
organic carbon (DOC) and particulate organic carbon (POC).  In addition, 
11,447 km of tracklines were covered and approximately 9,000 data points 
were collected underway using the Multiparameter Inorganic Carbon Analyzer (MICA). The 
collection of data extended from coastal waters near Barrow, Alaska, to 
88 27.46’N 159 22.05’E, and southward, just west of the Canadian 
archipelago back to coastal waters near Barrow and on to Dutch Harbor, 
Alaska.   Discrete vertical water casts and water samples were also taken 
underway and at nine different stations.  The USGS St. Petersburg Coastal 
and Marine Science Center (CMSC) assigns a unique identifier to each 
cruise or field activity. For example, H-01-11-AR tells us the data were 
collected in 2011 for the Arctic study and the data were collected during 
the first field activity for that study in that calendar year.