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   Largest-ever Commitment to ION's Intelligent Acquisition Marine Seismic
                                  Portfolio

HOUSTON, Nov. 10 /PRNewswire-FirstCall/ — ION Geophysical Corporation
(NYSE: IO) today announced that its Marine Imaging Systems group was awarded a
fleet-wide contract by The Polarcus Group of Companies (Polarcus), a new
entrant in the marine seismic market with a green philosophy, to equip all six
of its new state-of-the-art vessels with four streamer positioning and control
technologies from ION’s Intelligent Acquisition(TM) [IA] portfolio. The
contract, with a value in excess of $25 million, includes DigiFIN(TM),
CompassBIRD(TM), DigiRANGE(TM) II, and Orca(R) command & control systems.

Dave Moffat, Senior Vice President of Marine Imaging Systems at ION,
stated, “Polarcus is committed to investing in marine technologies that
support the operations of an ultra-modern, environmentally-responsible seismic
fleet. I am pleased that Polarcus’ experienced management team chose to
outfit their entire fleet with four technologies that are core to our
Intelligent Acquisition toolkit. Focused on high-end marine acquisition,
Polarcus is well positioned to enter the market in 2009 and operate from pole
to pole. These [IA] technologies enable the customer to proactively position
and optimize the streamer spread while decreasing acquisition complexity,
cycle time, and cost in the most challenging surveys and operating conditions.
In addition, innovative systems like DigiFIN can help Polarcus reduce its
carbon footprint by reducing infill, enabling faster line changes, and
speeding cable deployment and retrieval.”

For over 20 years, ION has been the leading provider of advanced
positioning systems that enable seismic service providers to operate more
efficiently and safely while delivering higher resolution subsurface images to
their oil and gas clientele.

— DigiFIN lateral control facilitates denser spatial sampling by
maintaining tighter, more uniform cable separation and increases productivity
with faster operations and minimal infill.

— The CompassBIRD maintains streamers at pre-defined target depths and
provides compass heading information, which in conjunction with the DigiRANGE
II acoustic ranging system, provides finite source and receiver locations
throughout the seismic spread.

— Orca streamlines and automates survey-wide data management and control
across all systems and vessels. The advanced software delivers unprecedented
spread visibility, control, and stability for modern 2D, 3D, 4D, and wide-
azimuth towed streamer surveys.

To learn more about ION’s Intelligent Acquisition technologies, visit
www.iongeo.com/ia/.

About ION

ION is a leading provider of geophysical technology, services, and
solutions for the global oil & gas industry. ION’s offerings allow E&P
operators to obtain higher resolution images of the subsurface to reduce the
risk of exploration and reservoir development, and enable seismic contractors
to acquire geophysical data more efficiently. Additional information about
ION is available at www.iongeo.com.

About Polarcus

Polarcus is a pure play marine geophysical company with a pioneering
environmental agenda, specializing in high-end towed streamer data acquisition
from pole to pole. Polarcus is launching an ultra-modern fleet of initially 6
advanced seismic vessels designed by Norway’s Ulstein Design AS incorporating
the innovative ULSTEIN X-BOW(R) hull. The vessels are being built in Dubai,
UAE, by Drydocks World — Dubai LLC, with the first vessels becoming
operational in 2009. Additional information about Polarcus is available at
www.polarcus.com

The information included herein contains forward-looking statements within
the meaning of Section 27A of the Securities Act of 1933 and Section 21E of
the Securities Exchange Act of 1934. Actual results may vary fundamentally
from those described in these forward-looking statements. All forward-looking
statements reflect numerous assumptions and involve a number of risks and
uncertainties. These risks and uncertainties include risk factors that are
disclosed by ION from time to time in its filings with the Securities and
Exchange Commission.

Contacts ION (Financial community)
Chief Financial Officer
Brian Hanson, +1 281.879.3672

ION (Media Affairs)
Senior Manager – Corporate Marketing
Jenny Salinas, +1 281.366.6286
jenny.salinas@iongeo.com

SOURCE ION Geophysical Corporation

Web site: http://www.iongeo.com
http://www.polarcus.com
(IO)