Logo CNR

Mobile laboratory for high resolution hydrographic survey (marine geophysical research)

Multibeam equipments for high resolution morpho-bathymetry mapping:

The mobile laboratory for high resolution hydrographic surveys is equipped with geophysical instruments and dedicated software in order to process and mapping the seafloor in shallow and very shallow water, from 0.4 m to 320 m water depth. These devices can be mounted on small boat and on research vessels through adaptable pole-mount and can be used also within rivers and lakes.

Location + _

Facoltà di Ingegneria, DICEA - Sapienza, Università di Roma, Via Eudossiana 18, 00184 Roma

Scientific manager + _

Dott. Alessandro Bosman

Security officer + _

Dott. Alessandro Bosman

Telephone + _

+39. 06.44585075

– Multibeam echosounder Teledyne Reson 7125 SV2 200-400 kHz (Chirp & Water Column options incused) for hydrographic survey in shallow and very shallow water.

– Applanix POSMV V5 system for positioning and orientation during the hydrographic survey (GPS and GLONASS satellites): accurate position, heading, attitude, heave, and velocity data for marine vessel and remote sensing equipment. Equipment to Marine and land (Laser Scanner) applications.

– Trimble GNSS receiver for RTK positioning.

– Base and rover radio link systems used for GPS and RTK applications (Pacific Crest)

– Tide Station portable for hydrographic application (Valeport Tide Master)

– Sound Velocity profiler, temperature and depth (Valeport Monitor and Mini SVS)

– Power Supply Honda 2 KW

– Uninterruptible Power Supply

– Software Teledyne PDS is a multipurpose software platform that supports a wide range of tasks within Hydrography, Dredge Guidance, Construction Support, Search & Recovery Operations and Port Entrance Monitoring. It interfaces with a several survey instruments, such as Lidar, Multibeam and Singlebeam Echosounders, Laser Scanner and is an optimal tool for interfacing to a variety of periphery sensors, including harbor construction.

– Post processing multibeam data Software: Caris Hips & Sips and Teledyne PDS2000. – Post processing GNSS e IMU data: POSPac MMS and Leica GeoOffice. – Post processing seismic data Software: Geosuite All Works, acquisition and processing data.

Hollister L.S., Crawford M.L. –1981- Fluid Inclusions: Applications to petrology. Short Course, v.6, Min. Ass. of Canada, 304 pp..
Roedder E. –1984- Fluid Inclusions. Min. Soc. Am. Rev. in Min., 12, 644 pp.
Shepherd T.J., Rankin A.H., Alderton D.H.M. –1985- A practical guide to fluid inclusion studies. Glasgow, Blackie and Son, 239 pp.
Goldstein R.H., Reynolds T.J. –1994- Systematics of fluid inclusions in diagenetic minerals. Soc. for Sedim. Geol. Short Course, 31, 199 pp.
De Vivo B., Frezzotti M.L. –1994-  Fluid inclusions in minerals: Methods and Aplications. IMA Short Course, Blacksburg, VA, Virginia Tech., 377 pp.
Andersen T., Frezzotti M.L., Burke E.A.J. –2001- Fluid Inclusions: Phase relationships – Methods – Applications.  Lithos, v. 55, 1-4, 320 pp.
Samson  I., Anderson A., Marshall D. –2003- Fluid inclusions: analysis and interpretation. Min. Ass. Can., vol.32, Short Course Series, 374 pp.

Activities and analysis:

The IGAG mobile laboratory provide high resolution bathymetric survey with positioning characterized by high accuracy and precision (Real Time Kinematic and Post Processing Kinematic) to investigate and map the continental shelf, rivers and lakes. These methodologies provide  high resolution  digital elevation models, backscatter intensity maps, water column depth and maps of the seafloor. The analysis and the interpretation of integrated geophysical data can be used in different fields: geo-morphological analysis (sedimentary processes, morpho-structural analysis, etc.) environmental analysis (fluid escape and physical analysis of the seawater and freshwater) monitoring studies (time-lapse bathymetry in areas with high sediment mobility), underwater archeology (search of archaeological features), dredging activities , etc.

The main activities are:

Hydrographic surveys with RTK and PPK positioning for morphological analysis and monitoring of natural and man-made features (including archaeological features) in marine, lake and river environments from shallow to very shallow water.

Advanced processing of bathymetric, seafloor and water column backscatter from multibeam data, side scan sonar data, single-beam data, single-channel seismic data, Laser Scanner and LIDAR data, GNSS and inertial integrated data (in static and kinematic mode). The acquisition and processing geophysical data are supported by dedicated workstation and software, both for marine and land activities.
The activities include integrated analysis and interpretation of geophysical dataset with thematic charts, digital cartography (Seafloor Mapping and vertical Mapping) using geographical information systems and database. The activities include also the high resolution marine and terrestrial digital elevation model products (DTM, TMM dense point clouds) geo-referenced in different Datum and Projections. The mounting of the geophysical equipment and GNSS receivers on board the small boat and vessel is conducted by the IGAG Researcher as well as the dimensional survey