What is ArcGIS for Maritime: Bathymetry?
ArcGIS for Maritime: Bathymetry is an extension to ArcGIS for Desktop that allows you to serve and use your bathymetric data for a variety of needs such as creating a single composite bathymetric surface on the fly and visualizing multiple surfaces in one frame of reference. The extension also helps you control your hydrographic survey footprints to identify data holdings and see gaps quickly.
Who uses ArcGIS for Maritime: Bathymetry?
ArcGIS for Maritime: Bathymetry is used by several different types of people across many industries and sciences. Data managers, hydrographers, GIS analysts, ocean scientists, and surveyors across ports, ocean science, hydrographic offices, maritime defense, and offshore energy will take advantage of this technology.
What is a Bathymetry Information System (BIS)?
ArcGIS for Maritime: Bathymetry supports workflows, integration with complementary applications, and the ability to generate image and map services within a Service Oriented Architecture (SOA). When ArcGIS for Maritime: Bathymetry is implemented as part of an enterprise GIS along with other applications and systems, this is considered a Bathymetric Information System (BIS).
Does ArcGIS for Maritime: Bathymetry store my raster data?
ArcGIS for Maritime: Bathymetry is not a storage mechanism for raster data. All the data in your holdings will continue to remain where they were located originally. ArcGIS for Maritime: Bathymetry only references your data. One implication is that your bathymetry database will not require much storage space as it does not actually contain any raster data.
Does ArcGIS for Maritime: Bathymetry modify my raster data in any way?
ArcGIS for Maritime: Bathymetry builds an index of your raster data holdings. The actual data files will remain as-is; ArcGIS for Maritime: Bathymetry only makes it easy to quickly find the data you want based on spatial extent, metadata values, or both. Think of the BIS as a jukebox or CD catalog – neither modifies or alters the LPs or CDs in any way. Without either, you could still use your music collection but it would be a laborious task to sift through just to find that one song. Likewise, the BIS makes it easy to select that one raster dataset from terabytes' worth data.
Are there any preconditions regarding my data before I can include it in a BIS?
There are just a few things to keep in mind before including data in your BIS:
- Only raster data, specifically Bathymetric Attributed Grid (BAG) files, can be added to the BIS at this time. Support for other data formats will be made available in future releases.
- Make sure all your data is located on a network share before you include it in the BIS. Keep in mind, once you add it to the BIS you must not move it to another location as there is no way for the BIS to track the new location.
- Anyone else in your organization who will access the BIS must also be provided access to the network storage that stores the raster datasets.
What kind of data can I get back from ArcGIS for Maritime: Bathymetry?
The BIS allows you to extract data in raster or vector (point) formats. You can select data by using a spatial extent to narrow down to the exact datasets you are interested in. You may also query against metadata values to return the datasets you want. Once you have selected the datasets, you may then compose a surface (raster) which you could use to export sampled points.
Can I organize my data?
Yes, you can organize your data using collections (like folders or groups) and by using your own custom metadata for organizing the data. This will allow you to easily search and find data.
Why would I want to use BAGs within the ArcGIS for Maritime: Bathymetry?
BAG or Bathymetric Attributed Grid is a standardized raster format designed specifically for bathymetry that maintains both depth and uncertainty of the surface. The BAG does not only store depth and uncertainty it maintains metadata specific the hydrographic survey, hydrographer certification, tracking list of golden soundings, among additional supporting information. It is the latter that certifies the BAG dataset as a navigable surface and depth values from the BAG can be used to support navigating safely at sea. The ArcGIS for Maritime: Bathymetry extension has the ability to read this information and present it to the end user in a searchable manner.