1. Data Access
2. Raster and Vector Data Description
3. Data Preview

1. Data Access
The spatial data in this report are delivered in two different formats:

• raster data
• vector data

Selected raster and vector data can be viewed within an ArcMap™ 9.2 map document (2008-1288.mxd). Refer to the “Raster and Vector Data Description” section below for details on file descriptions and locations.

Projection:
Raster data: Universal Transverse Mercator (UTM) M, Zone 19N, WGS84 Datum.
Vector data: Geographic Coordinate System, WGS84 Datum.

Viewing the data:
The data can be accessed in several ways depending on software availability:

• ArcGIS^® 9.2 or higher
• ArcGIS Explorer (available at no cost: http://www.esri.com/software/arcgis/explorer/index.htm)

Viewing the map documents:
ArcGIS^® 9.2 or higher:

To download the data from the Web, copy the GIS_Catalog folder or the GIS_Catalog zip file (approximately 790 megabytes (MB)) to a local computer and open the ArcMap™ 9.2 map document 2008-1288.mxd. This map document is saved with relative paths to the data files. As long as the file structure remains the same under the parent directory (GIS_Catalog) there is no need to change drive letters or pathways. Approximately 2 gigabytes (GB) of free space is needed in order to save and extract the data to a local drive.

Data download:
Raster and vector data are stored and compressed within zip files in order to facilitate Web downloads. WinZip^® files of the individual data layers are linked within the Data Preview section. Data Preview also lists specific download instructions.

Raster grids are stored as ESRI^® binary grid format in the GIS_Catalog (included in the GIS_Catalog.zip file) and as ASCII raster files within individual data-set zip files. The ASCII raster files can be converted easily to ESRI^® grid format in ArcGIS^® with Spatial Analyst extension (ASCII to Raster). Vector data are stored as shapefiles within the zip file.

If WinZip^® is not currently installed on the local system, go to WinZip^® http://www.winzip.com to download the latest version of the WinZip^® utility.

2. Data Description

This section describes the location of the raster and vector data within the directory structure of the Web page. Raster data are delivered as ESRI^® Binary Grids, ASCII Raster Grids, or TIFF images. Vector data are delivered as ESRI^® Shapefiles. Text files are delivered as CSV files.

Grid: floating point ASCII with ESRI^® header (included within individual dataset zip files) and ESRI^® binary grid format within the GIS_Catalog.zip file.

Image: binary image (TIFF, GeoTIFF, and JPEG formats).

Shapefile: ESRI^® file format for point, polyline, or polygon vector data.

Text Files: CSV files and raw data files.

GIS_Catalog

This folder contains:

Basemaps

1. mv_topobath.tif – Image: National Oceanic and Atmospheric Administration (NOAA), National Geophysical Data Center (NGDC) Coastal Relief Model of southeastern coast of Massachusetts.
2. MVCO.shp– Point Shapefile: Locations of the WHOI MVCO components

Bathy

1. bathy_2m – Grid: Bathymetry at 2-m resolution
2. bathy_2mh – Grid: Bathymetric hillshade at 2-m resolution
3. bathy_2m_csh – GeoTIFF: Color shaded-relief bathymetry at 2-m resolution
4. con_5m – Polyline Shapefile: 5-m bathymetric contours
5. svp.shp – Point Shapefile: Location of sound velocity profiles (SVP)

svp

This folder contains JPEG images of charts displaying the sound velocity profiles collected during USGS Cruise 07011 and CSV files containing the sound velocity profile data.

The JPG images are hotlinked to the svp locations shapefile (svp.shp) within the ArcMap™ 9.2 map document 2008-1288.mxd.

Using hotlink within ArcGIS 9.2 or higher:

In order to hotlink to these data, the shapefile must be selected within the Table of Contents. The hotlink feature (lightning bolt ) within the tools menu can then be used to display the SVP chart associated with an individual map object.

• Open 2008-1288.mxd
• Select shapefile of interest (that is, svp.shp) in the Table of Contents
• Select the lightning bolt tool () and click on a map object to view an image of the data.

Nav

This folder contains the raw HYPACK^®, Inc., navigation stored in individual Julian Day directories (Julian Days 221 through 225). These data are not incorporated in the ArcMap™ 9.2 map document 2008-1288.mxd. They are included in this report in order to provide the raw Real-Time Kinematic (RTK) navigation associated with the USGS Cruise 07011. Individual navigation files stored within each Julian Day directory were saved in HYPACK^® format. File name convention is LLL_TTTT.DDD, where LLL is the HYPACK^® line number, TTTT is the 24 hour time for the beginning of the file, and DDD is the Julian Day. A full description of these data is included in the metadata linked within the table below, Data Preview.

Samples

1. samples – Point Shapefile: Beach and seafloor samples collected in 2005 and 2007
2. samples_csv.csv – CSV file: Beach and seafloor samples collected in 2005 and 2007. Contains the same data as the samples point shapefile.

Seisimage

This folder contain JPEG images of seismic-reflection profiles. These images are hotlinked to the geophysical tracklines within the ArcMap™ 9.2 map document 2008-1288.mxd. See description under SVP for instructions on accessing hotlinks in map documents.

Sonar

1. sonar_05m.tif – GeoTIFF Image: Sidescan-sonar mosaic at 0.5-m resolution (TIFF)
2. sonar_05m_str.tif – GeoTIFF Image: Sidescan-sonar mosaic at 0.5-m resolution with a linear stretch applied (TIFF)

Tracklines

** Within 2008-1288.mxd: Seismic-reflection tracklines are hotlinked to JPEGs stored within the“Seisimage” directory. **

1. bathy_10sec.shp – Point Shapefile: 10-s navigation for swath bathymetric data
2. bathy_trknav.shp – Polyline Shapefile: Swath bathymetric tracklines
3. seismic_100sht.shp – Point Shapefile: Shot points at 100-shot interval for seismic data
4. seismic_500sht.shp – Point Shapefile: Shot points at 500-shot interval for seismic data
5. seismic_trknav.shp – Polyline Shapefile: Seismic tracklines
6. sonar_1min.shp – Point Shapefile: 1-minute navigation for sidescan-sonar data
7. sonar_trknav.shp – Polyline Shapefile: Sidescan-sonar tracklines

Map document:

2008-1288.mxd – ArcMap™ 9.2 map document containing selected data layers described above.

3. Data Preview

Downloading data:
To download raster and vector data, right click on the link within the 'Download zip file' column in the table below. 'Save Target As...' to save a compressed WinZip^® file to the local hard drive. If WinZip^® is not currently installed on the local system, go to WinZip^® to download the latest version of the WinZip^® utility.

File description	File name (Metadata)	View	File format	File location	Download zip file
NOAA NGDC Coastal Relief Model (UTM)	mv_topobathy		GeoTIFF Image	GIS_catalog/Basemaps	mv_topobathy.zip (609 KB)
WHOI MVCO Locations (Geographic Coordinate System)	MVCO		ESRI Shapefile Points	GIS_catalog/Basemaps	mvco.zip (35 KB)
Bathymetry (2-m cell size) (UTM)	bathy_2m bathy_2m_asc.asc		ESRI Grid 32 bit floating point (ASCII raster in zip file)	GIS_catalog/Bathy	bathy_2m.zip (8 MB)
Bathymetric Hillshade (2-m cell size) (UTM)	bathy_2mh bathy_2mh_asc.asc		ESRI Grid 8 bit integer (ASCII raster in zip file)	GIS_catalog/Bathy	bathy_2mh.zip (5 MB)
Color Shaded-Relief Bathymetric Image (2-m cell size) (UTM)	bathy_2m_chs.tif		GeoTIFF Image	GIS_catalog/Bathy	bathy_2m_chs.zip (24 MB)
5-meter Bathymetric Contours (Geographic Coordinate System)	con_5m		ESRI Shapefile Polylines	GIS_catalog/Bathy	con_5m.zip (100 KB)
Sound Velocity Profile Locations (Geographic Coordinate System)	svp		ESRI Shapefile Points	GIS_catalog/Bathy	svp.zip (36 KB)
Charts of Sound Velocity Profiles	svp_jpg		JPEG Image	GIS_catalog/Bathy/svp	svp_jpg.zip (247 KB)
Sound Velocity Profiles	svp_csv	No Image	Comma Separated Value Files (*.csv)	GIS_catalog/Bathy/svp	svp_csv.zip (40 KB)
HYPACK Navigation	hypack	No Image	HYPACK raw navigation files	GIS_catalog/Nav	hypack.zip (27 MB)
Sample Locations (Geographic Coordinate System)	samples		ESRI Shapefile Points	GIS_catalog/Samples	samples.zip (54 KB)
Sample Locations	samples	No Image	Comma Separated Value Files (*.csv)	GIS_catalog/Samples	samples_csv.zip (44 KB)
Seismic-Reflection Profiles	seisimage		JPEG	GIS_catalog/Seisimage	seisimage.zip (135 MB)
Sidescan-Sonar Mosaic (0.5-m cell size) (UTM)	sonar_05m.tif		TIFF 8 bit integer	GIS_catalog/Sonar	sonar_05m.zip (80 MB)
Sidescan-Sonar Mosaic with linear stretch (0.5-m cell size) (UTM)	sonar_05m_str.tif		TIFF 8 bit integer	GIS_catalog/Sonar	sonar_05m_str.zip (80 MB)
10-second Interval Trackline Navigation - Swath Bathymetry (Geographic)	bathy_10sec.shp		ESRI Shapefile Points	GIS_catalog/Tracklines	bathy_10sec.zip (1.2 MB)
Swath Bathymetric Tracklines (Geographic)	bathy_trknav.shp		ESRI Shapefile Polylines	GIS_catalog/Tracklines	bathy_trknav.zip (366 KB)
100-interval Seismic Shots (Geographic)	seismic_100sht.shp		ESRI Shapefile Points	GIS_catalog/Tracklines	seismic_100sht.zip (550 KB)
500-interval Seismic Shots (Geographic)	seismic_500sht.shp		ESRI Shapefile Points	GIS_catalog/Tracklines	seismic_500sht.zip (184 KB)
Seismic Shots (Geographic)	seismic_sht.shp		ESRI Shapefile Points	GIS_catalog/Tracklines	seismic_sht.zip (9 MB)
Seismic Tracklines (Geographic)	seismic_trknav.shp		ESRI Shapefile Polylines	GIS_catalog/Tracklines	seismic_trknav.zip (2 MB)
1-minute Interval Sidescan-Sonar Navigation (Geographic)	sonar_1min.shp		ESRI Shapefile Points	GIS_catalog/Tracklines	sonar_1min.zip (266 KB)
Sidescan-Sonar Tracklines (Geographic)	sonar_trknav.shp		ESRI Shapefile Polylines	GIS_catalog/Tracklines	sonar_trknav.zip (84 KB)