1. SUB BOTTOM DATA 1

2. Sub-Bottom Collection in SURVEY
Sub-bottom collection and processing is a standard feature of HYPACK®.
Sub-Bottom records are recorded to SEG-Y format. 2

3. interface for all systems
Sub-Bottom Systems
*Depending on the system
INNOMAR
SES-2000
One DLL for a consistent
interface for all systems
Benthos C3D
HYPACK®
SURVEY
SUBBOT.DLL
SYQWEST
Stratabox
Edgetech
Manufacturer
Control Program
(system dependent)
GeoAcoustics
HYPACK®
SURVEY
ANALOG SUB-BOTTOM
A/D Box
SUBBOT.DLL 3

4. Subbot.dll HARDWARE Setup
Select the device in the Setup form
Connection settings must match the sonar 4

5. Analog Settings - Triggers
External Trigger: The Sub-Bottom system is being triggered by another means and HYPACK just ‘listens’ for the returns.
Internal Solo: HYPACK provides a trigger to the Sub-Bottom system via the NI USB-6211 A-to-D box. The user can control the Trigger Interval from the Analog Settings box.
Internal – Multiple of Sidescan: To avoid interference, the Sub-Bottom system pings at an interval of the sidescan system. A ‘Trigger Multiple’ of ‘4’, means that for every 4 times the sidescan pings, the sub-bottom system will ping once.
Sample Period: How long the Sub-Bottom driver listens for returns.
Sample Delay: How long the Sub-Bottom driver waits after the ping before starting to listen. 5

6. Analog Sub-Bottom Monitor
The Analog Monitor is used to configure the analog settings for generating triggers and for listening for returns.
Each analog Sub-Bottom system will have its own particular settings to maximize the quality of the returns. 6

7. Innomar SES in SURVEY 7

8. SUB BOTTOM PROCESSING 8

9. SUB-BOTTOM PROCESSING: SBD
Located under ‘Utilities’ menu.
Review Sub-Bottom time series
Process imagery
Edit bottom tracking
Mark targets
Digitize Layers 9

10. manually digitize acoustic layers
Sub-Bottom Data Processing: Loading Files
mark targets
manually digitize acoustic layers
SBP reads SEG-Y files collected in HYPACK. It may read some other vendors' SEG-Y files, but there are several varieties of SEG-Y and some do not have position data necessary for targeting. 10

11. SBD: Imagery Options
Improve the quality of your imagery with Time Varied Gain (TVG) (Exponential or User Defined) and Band Pass Filtering 11

12. SBD: Targeting Depth Targets Add, edit, or delete targets in edit mode
Drag target's handle to mark depth
Saved to SBP.tgt in the project folder 12

13. SBD: Digitizing Layers
Digitize up to 20
different layers
Apply different sound velocity for water and sediment
Layers can be exported to EDT or XYZ format
Click to add a point to the layer
Shift + click to remove a point 13

14. Track View See all track lines in a map view Display Targets
Seabed Depth
Reflectors
Color reflectors by absolute depth or isopach (ie. Depth of burial)

15. Sample Session

16. Display of Sub-Bottom in CSV
SURVEY saves the Sub-Bottom data to SEG-Y format files in the Project’s Raw folder.
In CSV:
Load EDT Files (same as usual)
Checkbox ‘Load Sub-Bottom Data’
The Seg-Y are automatically matched, using the rootname of each file.
Same View and Print functions. 16

17. Sub-Bottom Data in CSV 17