Qyudos Geosurvey Indonesia (QGI) is a geophysical, hydro-oceanographic survey consultancy operating in Bandung, Indonesia. QGI can assist you in field data acquisition, data processing, as well as analysis and report preparation. More than 100 locations have been visited and mapped all over Indonesia.

1. Sub-
Bottom
Profiler
t
| www.qyudos.co.id
| Jl. Bumi Mas Kencana I No. 17, Antapani Wetan, Antapani, Bandung 40291, West Java, Indonesia
| geosurvey@qyudos.co.id
| +62 22 63731178 | +62 83821436669
GeosurveyIndonesia

2. Sub Bottom Profiler is a geophysical method that helps you to determine the condition of the subsurface
(sediments) by utilizing an acoustic signal. In general, this tool consists of a single-channel acoustic source as
well as the receiving system, acoustic signal sent into shallow seabed sediments will reflect due to differences
in acoustic impedance. Acoustic impedance is related to the density of the material and the rate at which
sound travels through this material.

3. System Operating
Frequency
Accoustic Source Receiver Array Penetration Typical
Resolution
Source Mounting
Style
Pinger Tuned between 2
– 12 KHz
Combined
Piezotransducer /
transceiver
Combined
Piezotransducer
/ transceiver
Up to
tens of meter
0.2 – 1 m Over-side
mounted.
CHIRP Swept 1 – 10 KHz Swept frequency
transducer (1-
10kHz)
Tranducer Up to
tens of meter
~ 0.05 m Over-side
mounted, Towed
Parametric Combined
bottom detection
SBES and Pinger
Combined
Piezotransducer /
transceiver
Combined
Piezotransducer
/ transceiver
Up to
tens of meter
0.2 – 1 m Over-side
mounted.
Boomer 300 Hz – 3 KHz Boomer plate Towed Streamer Up to
100 meter
0.5 – 2 m Towed
Sparker 50 Hz – 4 KHz Electrical spark in
water
Towed Streamer Up to
500 meter
> 2 m Towed
We survey a wide range of penetration. We provide various sub-bottom profiler
methods according to your needs. The use of the right method will produce
maximum results.
Note:
System penetration depends on the type of bottom sediment. Deeper penetration on soft sediment such as clay.

4. Pinger Sub Bottom
Profiler (SBP)

5. EQUIPMENT STATUS: OWNED
STRATABOX 3510
10 KHz Tranducer
Shallow Water
Operation :
Depth Range :
Depth Resolution :
Depth Accuracy :
Transmit Rate :
Data File Output :
Transmit Output Power :
Input Power :
Penetration :
Strata Resolution :
2.5 m
0 – 10 m, 0 – 20 m, 0 – 40 m, 0 – 80 m,
0 – 150 m, 0 – 300 m, 0 – 800 m.
0.1 m
0.5%
Up to 10 Hz, depth mode dependent
Save Depth, Navigaton, and Graphic
Data in ODC format (proprietary) or
ODC & SEG-Y format
300 Watts (Pulsed) @ 10 KHz
10 – 30 VDC (24 VDC Recommended)
Up to 40 meter (bottom type dependent)
6 cm

6.  3.5 KHz Pinger SBP
EQUIPMENT STATUS: OWNED
STRATABOX 3510
3.5 KHz Tranducer
Shallow Water
Operation :
Depth Range :
Depth Resolution :
Depth Accuracy :
Transmit Rate :
Data File Output :
Transmit Output Power :
Input Power :
Penetration :
Strata Resolution :
5 m
0 – 10 m, 0 – 20 m, 0 – 40 m, 0 – 80 m,
0 – 150 m, 0 – 300 m, 0 – 800 m.
0.1 m
0.5%
Up to 10 Hz, depth mode dependent
Save Depth, Navigaton, and Graphic
Data in ODC format (proprietary) or
ODC & SEG-Y format
600/1000 Watts (Pulsed) @ 3.5 KHz
10 – 30 VDC (24 VDC Recommended)
Up to 100 meter (bottom type
dependent)
15 cm

7. Single-Channel Seismic
with Boomer Source

8.  Single-Channel Seismic with Boomer Source
SIG PULSE S1
Energy Source
Output Energy :
Input Power :
10 – 300 Joules
230 VAC, 50-60 Hz
SIG MAXIPULSE 300
Boomer Plate
Source Level :
Pulse Width :
Frequency
Spectrum :
Input Power :
227 dB re µPa @ 1 m
@ 300 J
0.12 – 0.15 ms
500 Hz – 14 KHz
Max 1 pulse/s @ 300 J
SPS-2-2012
Streamer Power Supply
SIG 16.8.5
Single-channel Streamer :
Number Hydrophone :
Hydrophone :
Bandwidth :
Array Tube Length :
Hydrophone Spacing :
8 hydrophones
SIG 16
90 – 1800 Hz
5 m
0.5 m
EQUIPMENT STATUS: RENT

9. Single-Channel Seismic
with Sparker Source

10.  Single-Channel Seismic with Sparker Source
APPLIED ACOUSTIC CSP-D
Energy Source
Output Energy :
Input Power :
50 – 2400 Joules
240Vac 45-
65Hz@3.0kVA single
phase
SQUID 2000 SPARKER
Squid Sparker
Recommended
Output Energy :
Pulse Width :
Number of Tip
Location :
Operating
Voltage :
600 – 2400 Joules
1 ms at 1000 Joules
8
3000 – 4000V
STREAMER HYDROPHONE
Number of
Hydrophones :
Frequency
Responses :
Array Tube Length :
Hydrophone
Spacing :
1, 8, 12, 20
140 Hz – 10 KHz
4.5 m
n/a, 3.6 m, 2.5 m, 1.5 m
EQUIPMENT STATUS: RENT

12. Secondary mineral deposit – Tin Placer
Mineral Exploration
We can assist with mineral
prospecting in marine areas,
especially those associated with
secondary mineral deposit systems
such as placer deposits. We help
delineate your assets to minimize
costs for the next stage of exploration.

13. Wreck Identification
SBP could be useful to detect wrecks
or buried objects that are potential
hazards for shipping activities. Here is
one application of SBP to detect a
trestle wreck that was destroyed by a
ship strike, in this area no wreck
material was found buried below the
surface. Combining SBP with a
multibeam echosounder and side-
scan sonar will be full-solution to
identify the location and calculate the
wreck’s dimensions on the surface or
buried.

14. Pipeline Identification
SBP can be used to monitor the burial
depth of pipelines network in soft
sediments. The activities of shipping
route planning, construction, or laying
cables in the waters will require
information on pipeline crossings and
their depths in order to mitigate
potential hazards that may occur. Our
SBP system is integrated with an
RTK-DGPS system that subscribes to
L-Band correction with an estimated
position error value of up to 10 cm.
Utilizing the optimal acquisition
methods and procedures will be able
to provide accurate and precise
buried pipeline depth information.

15. Shallow gas
Site Investigation |
Shipping Route
SBP helps understand the potential
for shallow natural hazards related to
the geology of the survey area. The
submarine soil containing shallow gas
has solid, liquid, and gas phases. The
existence of shallow gas causes
serious influence on engineering
properties. The shallow gas in the
seabed strata can be released from
the strata due to natural or man-made
reasons. The shallow gas release can
slowly move to the shallow until it
sprays out of the seabed. It can also
be a sharp overspray or a blowout in
the process of drilling.

16. Site Investigation |
Construction
SBP for Detailed Engineering and
Design (DED) of bridge construction.
The combination of SBP with drilling
data from soil investigation helps to
determine the geology and its lateral
distribution.

17. Mass Transport Deposit /
Sediment Gravity Flow
Site Investigation |
Renewable Energy
We support the process of renewable
energy development, in this case SBP
helps understand the condition of the
lake bottom for the purposes of
mooring FPV (Floating Photovoltaic)
systems or solar panels. Here is a
little overview of the presence of
sediment gravity flow, showing the
condition of the lake bed which is
composed of mobile sediments.

18. Site Investigation |
Pre-Dredging Support
Combination of SBP and Bathymetry
for pre-dredging purposes. Dredging
volume calculation can be obtained
based on bathymetry data which
technically has a more detailed
horizontal resolution, SBP and
sediment sampling help understand
the distribution of seabed types at the
site. SBP can help you determine the
right type of dredging equipment.

19. Channel
Some potential hazards may occur in
public areas without exception in the
sea. Buried ancient river channels
may cause some engineering failure
due to the different characteristics
with the boundary of the channel.
Sediment properties of ancient river
channels are highly dependent on the
sediment that fills the channel.
Mapping the distribution of ancient
rivel channels is one of the SBP's
abilities.
Site Investigation |
Port and Harbour
Development