@article {5043, title = {Combining angular and spatial information from multibeam backscatter data for improved unsupervised acoustic seabed segmentation}, year = {2012}, month = {February 21-24}, address = {Wellington, New Zealand}, url = {http://www.conference.co.nz/shallowsurvey}, author = {Alexandre C. G. Schimel and Yuri Rzhanov and Fonseca, Luciano and Larry A Mayer and Immenga, Dirk} } @article {4306, title = {Construction of seafloor thematic maps from multibeam acoustic backscatter angular response data}, year = {2011}, month = {09/2011}, publisher = {Elsevier}, address = {Cambridge, MA, USA}, keywords = {Data Processing, GeoCoder, Seafloor Characterization}, author = {Yuri Rzhanov and Fonseca, Luciano and Larry A Mayer} } @article {3904, title = {Blue Carbon: The role of healthy oceans in binding carbon}, year = {2010}, pages = {1-80}, keywords = {Other}, author = {Nellemann, C and Corcoran, E and Duarte, C M and Valdes, L and DeYoung, C and Fonseca, Luciano and Grimsditch, G} } @article {2870, title = {Looking into the Future of Ocean Sciences: an IOC Perspective}, volume = {23}, number = {3}, year = {2010}, pages = {160-175}, publisher = {The Oceanography Society}, keywords = {Other}, author = {Valdes, L. and Fonseca, Luciano and Tedesco, K} } @proceedings {, title = {Comparison Between Physical Sediment Samples and Grain-size Estimates from GeoCoder}, year = {2009}, month = {Nov 10 - Nov 12}, address = {Cape Town, Western Cape, South Africa}, keywords = {GeoCoder}, author = {Huff, Lloyd C and Fonseca, Luciano and Hou, Tianhang and McConnaughey, Robert} } @proceedings {, title = {High-resolution Delineation of Acoustically Homogeneous Areas in Multibeam Backscatter Maps}, year = {2009}, month = {Oct 4 - Oct 9}, address = {St. Andrews, New Brunswick, Canada}, keywords = {GeoCoder}, author = {Yuri Rzhanov and Fonseca, Luciano and Larry A Mayer} } @article {2845, title = {Angular Range Analysis of Acoustic Themes from Stanton Banks Ireland: A Link Between Visual Interpretation and Multibeam Echosounder Angular Signatures}, volume = {70}, year = {2009}, pages = {1298-1304}, publisher = {Association for Computing Machinery (ACM)}, address = {New York, NY, USA}, keywords = {Seafloor Characterization}, author = {Fonseca, Luciano and Craig Brown and Brian R Calder and Larry A Mayer and Yuri Rzhanov} } @proceedings {3209, title = {Automatic Construction of Acoustic Themes for Benthic Habitat Mapping at Stanton Banks, UK}, year = {2009}, month = {May 5 - Jun 8}, address = {Trondheim, Trondheim, Norway}, keywords = {Seafloor Characterization}, author = {Fonseca, Luciano and Yuri Rzhanov and McGonigle, C and Craig Brown} } @article {, title = {Going Autonomous Seafloor Mapping from an AUV, Recent Results and Challenges}, year = {2008}, month = {Oct 21 - Oct 24}, edition = {5th}, chapter = {International}, address = {Durham, NH, USA}, keywords = {AUV \& Harbor Tracking}, author = {Arthur Trembanis and Hiller, T and Fonseca, Luciano and Larry A Mayer} } @article {, title = {A Workable Schema for Editing Multibeam Backscatter}, year = {2008}, month = {Oct 21 - Oct 24}, edition = {5th}, chapter = {International}, address = {Durham, NH, USA}, keywords = {FishPac LRSS Sonar}, author = {Huff, Lloyd C and Fonseca, Luciano and Hou, Tianhang and McConnaughey, Robert} } @article {, title = {Approaches and Requirements of Quantitative Comparison of the Multibeam Sonar Benthic Acoustic Backscatter}, year = {2008}, month = {Oct 21 - Oct 24}, edition = {5th}, chapter = {International}, address = {Durham, NH, USA}, keywords = {Multibeam Sonars}, author = {Mashkoor A Malik and Larry A Mayer and Fonseca, Luciano and Larry G Ward and Huff, Lloyd C and Brian R Calder} } @article {, title = {Automatic Construction of Acoustic Themes from Multibeam Backscatter Data}, year = {2008}, month = {Oct 21 - Oct 24}, edition = {5th}, chapter = {International}, address = {Durham, NH, USA}, keywords = {ARA Analysis}, author = {Fonseca, Luciano and Yuri Rzhanov} } @proceedings {, title = {A Qualitative Assessment of Two Multibeam Echo Sounder (MBES) Backscatter Analysis Approach}, year = {2008}, month = {May 5 - May 8}, pages = {1}, address = {Victoria, British Columbia, Canada}, keywords = {Other}, author = {Fonseca, Luciano and Robidoux, Lorraine and Watt, G} } @article {2835, title = {US UNCLOS Multibeam Data: The Processing of Multibeam Bathymetry and Backcatter}, volume = {8}, number = {9}, year = {2008}, pages = {14-17}, publisher = {Geomatics Information \& Trading Center - GITC}, address = {Lemmers, Amsterdam, The Netherlands}, keywords = {Law of the Sea}, author = {Andrew A. Armstrong and Brian R Calder and Fonseca, Luciano and James V. Gardner and Larry A Mayer} } @proceedings {, title = {A Surprise Occurrence in Acoustic Bottom Backscatter Measurements Conducted in the Eastern Bering Sea}, year = {2007}, month = {May 14 - May 18}, pages = {0-0}, address = {Norfolk, VA, USA}, keywords = {Other}, author = {Huff, Lloyd C and Fonseca, Luciano} } @proceedings {, title = {Integrating Imagery from Hull Mounted Sidescan Sonars with Multibeam Bathymetry}, year = {2007}, month = {May 14 - May 18}, pages = {0-0}, address = {Norfolk, VA, USA}, keywords = {Other}, author = {Pohner, F and Bakke, J and Nilsen, O and Kjaer, T and Fonseca, Luciano} } @article {, title = {Remote estimation of surficial seafloor properties through the application Angular Range Analysis to multibeam sonar data}, volume = {28}, number = {2}, year = {2007}, pages = {119-126}, publisher = {Springer Publisher}, address = {New York, NY, USA}, keywords = {Other}, author = {Fonseca, Luciano and Larry A Mayer} } @proceedings {, title = {Clustering Acoustic Backscatter in the Angular Response Space}, year = {2007}, month = {May 14 - May 18}, pages = {0-0}, address = {Norfolk, VA, USA}, keywords = {Other}, author = {Fonseca, Luciano and Brian R Calder} } @proceedings {3157, title = {Multibeam Echo Sounding as a Tool for FIsheries Habitat Studies}, year = {2007}, month = {May 21 - May 25}, pages = {1-2}, chapter = {Joint Assembly}, address = {Acapulco, Acapulco, Mexico}, keywords = {Other}, author = {Fonseca, Luciano and Larry A Mayer} } @proceedings {, title = {New Multibeam Mapping of the Gulf of Maine}, year = {2006}, month = {Apr 11 - Apr 11}, chapter = {GIS and Ocean Mapping in Support of Fisheries Research and Managment Conference}, address = {Cambridge, MA, USA}, keywords = {Other}, author = {Andrew A. Armstrong and Larry A Mayer and Case, James D and Fonseca, Luciano} } @proceedings {, title = {Acoustic Backscatter and Remote Seafloor Characterization}, year = {2006}, month = {Oct 17 - Oct 19}, address = {Woods Hole, MA, USA}, keywords = {Seafloor Characterization}, author = {Fonseca, Luciano} } @proceedings {, title = {Experiments for multibeam Backscatter Adjustments on the NOAA Ship FAIRWEATHER}, year = {2006}, month = {Sep 18 - Sep 22}, pages = {0-0}, chapter = {Americas}, address = {Boston, MA, USA}, keywords = {Other}, author = {Fonseca, Luciano and Brian R Calder} } @proceedings {, title = {Seafloor Characterization Through the Application of AVO Analysis to Multibeam Sonar Data}, year = {2005}, month = {Sep 5 - Sep 9}, pages = {0-0}, address = {Bath, UK, UK}, keywords = {Seafloor Characterization}, author = {Fonseca, Luciano and Larry A Mayer and Kraft, Barbara J} } @proceedings {, title = {Insitu Measurement of Sediment Acoustic Properties}, year = {2005}, month = {Jun 28 - Jul 1}, pages = {0-0}, chapter = {Technologies and Results}, address = {Heraklion, Crete, Greece}, keywords = {Other}, author = {Kraft, Barbara J and Ressler, J and Larry A Mayer and Fonseca, Luciano and McGillicuddy, Glenn} } @proceedings {, title = {Geocoder: An Efficient Backscatter Map Constructor}, year = {2005}, month = {Mar 29 - Mar 31}, pages = {0-0}, address = {San Diego, CA, USA}, keywords = {Other}, author = {Fonseca, Luciano and Brian R Calder} } @article {, title = {Measurement of InSitu Acoustic Properties for the ONR Geoclutter Program, Annual Report, Geoclutter Program}, year = {2005}, institution = {University of New Hampshire (UNH)}, address = {Center for Coastal and Ocean Mapping (CCOM)/Joint Hydrographic Center (JHC)}, keywords = {Other}, author = {Larry A Mayer and Fonseca, Luciano and Kraft, Barbara J} } @article {3417, title = {Mapping Near-Surface Gas with Acoustic Remote Sensing Methods, Examples from Eel River Margin, CA and Skjalfandi Bay, Iceland}, year = {2005}, pages = {0-0}, address = {St. Louis, MO, USA}, keywords = {Other}, author = {Fonseca, Luciano and Larry A Mayer} } @article {, title = {Measurement of In Situ Acoustic Properties for the ONR Geoclutter Program}, year = {2004}, institution = {University of New Hampshire (UNH)}, address = {Center for Coastal and Ocean Mapping (CCOM)/Joint Hydrographic Center (JHC)}, keywords = {Other}, author = {Larry A Mayer and Kraft, Barbara J and Fonseca, Luciano} } @article {3416, title = {AVO Analysis of Multibeam Backscatter, an Example from Little Bay, NH and Skjalfandi Bay, Iceland}, year = {2004}, month = {Dec 13 - Dec 17}, pages = {0-0}, chapter = {Fall Meeting}, address = {San Francisco, CA, USA}, keywords = {Other}, author = {Fonseca, Luciano and Larry A Mayer and Kraft, Barbara J and Brandsdottir, B and Richter, B} } @proceedings {, title = {Detection Near-surface Gas with Acoustic Remote Sensing Data}, year = {2002}, month = {Oct 20 - Oct 24}, pages = {0-0}, edition = {8th}, address = {Cartagena, Cartagena, Columbia}, keywords = {Other}, author = {Fonseca, Luciano and Larry A Mayer} } @article {3410, title = {Automatic Estimation of the Seafloor Geomorphology of the Santos Basin, Brazil}, volume = {83}, number = {47}, year = {2002}, month = {Dec 6 - Dec 10}, pages = {0-0}, chapter = {Fall Meeting}, address = {San Francisco, CA, USA}, keywords = {Other}, author = {Brian R Calder and Fonseca, Luciano and Francolin, Joao B} } @article {3413, title = {Multi-scale Visualization of Remote Sensing and Topographic Data of the Amazon Rain Forest}, year = {2002}, month = {Dec 6 - Dec 10}, pages = {0-0}, chapter = {Fall Meeting}, address = {San Francisco, CA, USA}, keywords = {Other}, author = {Fonseca, Luciano and Miranda, F P and Beisl, C} } @article {, title = {The High Frequency Backscattering Angular Response of Gassy Sediments: Model/Data Comparisons from the Eel River Margin, California}, volume = {111}, number = {6}, year = {2001}, pages = {2621-2631}, publisher = {Acoustical Society of America}, address = {Melville, NY, USA}, keywords = {Other}, author = {Fonseca, Luciano and Larry A Mayer and Orange, Dan and Driscoll, Neal W} } @proceedings {, title = {Interactive 3-D Visualization and Exploration of Deepwater Geohazards}, year = {2001}, month = {May 3 - May 6}, pages = {0-11}, address = {Houston, TX, USA}, keywords = {Other}, author = {Larry A Mayer and Fonseca, Luciano and Colin Ware and Paton, Mark and Lindsay Gee and James V. Gardner and Orange, Dan} } @inbook {, title = {ArcView Objects in the Fledermaus Interactive 3-D Visualization System: Examples from the STRATAFORM GIS}, booktitle = {Undersea with GIS}, year = {2001}, pages = {23}, publisher = {ESRI Press}, organization = {ESRI Press}, address = {Redlands, CA, USA}, keywords = {Other}, author = {Fonseca, Luciano and Larry A Mayer and Paton, Mark} } @mastersthesis {1807, title = {A Model for Backscattering Angular Response of Gassy Sediments: Applications to Petroleum Exploration and Development Programs}, volume = {Ocean Engineering}, year = {2001}, month = {12/2001}, pages = {131}, school = {University of New Hampshire}, address = {Durham, NH}, abstract = {

The location and distribution of near-surface gas in continental margins is of particular interest for oil exploration and development programs. The presence of gas seepages can be evidence of the possible existence of subsurface hydrocarbon reservoirs. Gas is also a potential hazard for offshore facilities, as it decreases the strength of unconsolidated sediments increasing the risk of seafloor failures and slumps.

Acoustic remote sensing systems such as multibeam and sidescan sonars can be used for mapping and detection of near-surface gas in marine sediments. These systems provide a realistic depiction of the seafloor by means of the simultaneous acquisition of co-registered high-resolution bathymetry and calibrated seafloor backscatter. The recognition of gas signatures in acoustic remote sensing data depends on the proper modeling of the acoustic backscatter response. In this thesis, a high frequency backscatter model that takes into account the amount of free gas in the sediments is proposed. Inversion of this model is used to estimate the distribution of near-surface gas in the sedimentary basin Additionally, analysis of backscatter images and detailed bathymetry reveals anomalous seafloor features, which are associated with gas expulsion.

The acoustic remote sensing data is analyzed in conjunction with other layers of information available in the exploration region, including a core database, structural maps, location of wells, geochemical data and geophysical data. This analysis attempts to link anomalous acoustic backscatter on the seafloor to sub-surface structures, a necessary step toward the understanding of the stratigraphic or tectonic control of seafloor seepages. New visualization techniques, which take advantage of 3D tools and GIS integration, are used to help analyze and understand these complex relationships in a natural and intuitive manner.

}, keywords = {Applied sciences; Earth sciences; Angular response; Backscattering; Gassy sediments; Petroleum exploration}, author = {Fonseca, Luciano} } @article {3405, title = {The STRATAFORM GIS: Interactive Exploration in 2 and 3 Dimensions}, volume = {82}, number = {47}, year = {2001}, month = {Dec 10 - Dec 14}, pages = {0-0}, chapter = {Fall Meeting}, address = {San Francisco, CA, USA}, keywords = {Other}, author = {Larry A Mayer and Fonseca, Luciano and Paton, Mark and McLeod, Pam and Martin Jakobsson} } @article {3971, title = {Surficial Backscatter of the Eel River Margin: IT{\textquoteright}S JUST GAS!}, year = {2001}, keywords = {Other}, author = {Fonseca, Luciano and Larry A Mayer and Yun, Janet and Driscoll, Neal W and Orange, Dan} } @article {, title = {Modeling High-Frequency Seafloor Backscattering of Gassy Sediments: The Eel River Margin Case}, volume = {81}, number = {48}, year = {2000}, month = {Dec 15 - Dec 19}, pages = {0-0}, chapter = {Fall Meeting}, address = {San Francisco, CA, USA}, keywords = {Other}, author = {Fonseca, Luciano and Larry A Mayer} } @article {, title = {Statistical Processing of Multibeam Sonar Data from SAX-99}, volume = {81}, number = {48}, year = {2000}, month = {Dec 15 - Dec 19}, pages = {0-0}, chapter = {Fall Meeting}, address = {San Francisco, CA, USA}, keywords = {Other}, author = {Brian R Calder and Yuri Rzhanov and Fonseca, Luciano and Larry A Mayer and Flood, R D} } @article {3969, title = {Modeling High-Frequency Seafloor Backscattering of Gassy Sediments: The Eel River Margin Case}, year = {2000}, keywords = {Other}, author = {Fonseca, Luciano and Larry A Mayer} } @proceedings {, title = {The STRATAFORM GIS}, year = {1999}, pages = {0-0}, address = {St. Andrews, New Brunswick, Canada}, keywords = {Other}, author = {Larry A Mayer and Fonseca, Luciano and Pacheco, M and Galway, S and Martinez, J and Hou, Tianhang} } @proceedings {, title = {High Resolution Side-Scan and Seismic Images of Landslides on the Northern California Continental Shelf}, year = {1998}, pages = {0-0}, chapter = {Fall Meeting}, address = {San Francisco, CA, USA}, keywords = {Other}, author = {Driscoll, Neal W and Orange, Dan and Fonseca, Luciano and Larry A Mayer} } @article {, title = {Semivariogram textural classification of JERS-1 (Fuyo-1) SAR data obtained over a flooded area of the Amazon rainforest}, volume = {19}, year = {1998}, pages = {549-556}, publisher = {Taylor \& Francis}, keywords = {Other}, author = {Miranda, F P and Fonseca, Luciano and Carr, J} } @proceedings {, title = {Research Cooperation Between the National Space Development Agency of Japan and Petrobras for Monitoring a Tropical Rain Forest Environment using JERS-1 Sar Data: Preliminary Results of Geologic Studies}, year = {1996}, pages = {647-648}, chapter = {8th}, address = {Salvador, Bahia, Brazil}, keywords = {Other}, author = {Miranda, F P and Bentz, C and Fonseca, Luciano and Almeida, R} } @article {, title = {Analysis of JERS-1 SAR data for vegetation discrimination in northwestern Brasil using the semivariogram textural classifier (STC)}, volume = {17}, number = {17}, year = {1996}, pages = {3523-3529}, publisher = {Taylor \& Francis}, keywords = {Other}, author = {Miranda, F P and Fonseca, Luciano and Carr, J and Taranik, J} } @proceedings {, title = {Corre\ç\ões radiom\étricas dos dados sonogr\áficos da Bacia de Campos (Radiometric Corrections of sidescan sonar data from Campos Basin.)}, year = {1996}, pages = {0-0}, chapter = {8th}, address = {Salvador, Bahia, Brazil}, keywords = {Other}, author = {Fonseca, Luciano} } @proceedings {, title = {Aplica{\~A}{\textsection}{\~A}{\textsterling}o de geoprocessamento, processamento digital de imagens e fotogrametria terrestre no rastreamento litofaciol{\~A}{\textthreesuperior}gico de afloramentos (Use of geoprocessing, digital image processing and terrestrial photogrametry for tracing lithof}, year = {1995}, pages = {0-0}, address = {Rio Claro, Sao Paulo, Brazil}, keywords = {Other}, author = {Fonseca, Luciano and Carrasco, B} } @proceedings {, title = {Acquisition of sonography, bathymetric and high-frequency profile data in Campos Basin}, year = {1995}, month = {Aug 20 - Aug 24}, address = {Rio de Janeiro, Rio de Janeiro, Brazil}, keywords = {Other}, author = {Piauilino, P and Fonseca, Luciano and Maldonado, P} } @proceedings {2936, title = {Use of geographical information system, digital image processing and terrestrial photogrametry for tracing elements and lithofacies on outcrop images}, year = {1995}, address = {Edinburgh, UK}, keywords = {Other}, author = {Fonseca, Luciano and Carrasco, B} } @proceedings {, title = {The GIS and image processing state of the art in PETROBRAS}, year = {1994}, month = {Sep 26 - Sep 30}, address = {Rio de Janeiro, Rio de Janeiro, Brazil}, keywords = {Other}, author = {Bentz, C and Fonseca, Luciano and Miranda, F P and Cunha, F} }