Abstract
Sea trials of linear and parametric sub-bottom seismic profilers were conducted in the Western Gulf of Maine (WGOM) by the UNH Center for Coastal and Ocean Mapping (CCOM) and four industrial partners including Knudsen Engineering Limited (3260 Chirp SBP), EdgeTech (3400 SBP), Kongsberg Discovery (Topas PS40 and PS20 SBPs), and ECHO81 (Innomar Medium 100 SBP). The sea trials were part of a larger assessment of sub-bottom profiler systems by CCOM to better understand new developments in acoustic systems in differing seafloor geologic settings.
Presented in this report are the sub-bottom seismic profiles, along with associated metadata, sea and weather conditions, and basic geologic interpretations, shown in five PDF documents, one for each system tested. The sea trials were conducted in four reference sites developed by CCOM for evaluating and testing acoustic systems. The reference sites cover a wide range of bottom types (sediment, morphology) and include a high-energy channel deposit (Portsmouth Harbor Entrance), a large sand shoal (Northern Sand Body), a paleodelta (Merrimack Paleodelta), and a muddy basin (Scantum Basin). Use of the reference sites facilitates qualitative, but geologically informed, evaluations to be made for sub-bottom systems.
Publication Date
2025
Digital Object Identifier (DOI)
Document Type
Report
Recommended Citation
Ward, Larry G.; Hughes Clarke, John E.; and Morrison, Rachel C., "UNH CCOM Western Gulf of Maine Reference Sites: Sub-Bottom Profiler Systems Sea Trials" (2025). Center for Coastal and Ocean Mapping. 1751.
https://scholars.unh.edu/ccom/1751
CCOM_WGOM_Ref_Sites_Innomar_Med-100_Sea_Trials_SBPs_&_Metadata.pdf (16084 kB)
CCOM_WGOM_Ref_Sites_Knudsen_3260_Chirp_Sea_Trials_SBPs_&_Metadata.pdf (27731 kB)
CCOM_WGOM_Ref_Sites_Kongsberg_Topas_PS40_Sea_Trials_SBPs_&_Metadata.pdf (17912 kB)
CCOM_WGOM_Ref_Sites_Kongsberg_Topas_PS120_Sea_Trials_SBPs_&_Metadata.pdf (12842 kB)