caa a22 4500 463216458 CHVBK 20180405153158.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s00367-007-0056-4 doi (NATIONALLICENCE)springer-10.1007/s00367-007-0056-4 Investigation of the relationship between seafloor echo strength and sediment type—a case study in Jiaozgou Bay, China [Elektronische Daten] [Dewen Du, Yongqi Chen] In recent years, increasing attention is being given to investigating the relationships between seafloor echo strength and sediment type. This aspect was assessed in a course of a marine survey conducted in Jiaozhou Bay near the city of Qingdao, China, where various sediment types are known to exist. Multi-beam echo data and sediment samples were acquired, processed and analyzed. The findings demonstrate that multi-beam echo strengths are strongly related to seabed types such as rock, sand and clay. Thus, echo strength increases progressively with the increase in sand content in gravely, sandy, and clayey sediments. However, echo strength is more sensitive to changes in sand content in fine-grained sediment and less sensitive in coarse-grained sediment. Also, high shell content of sediments greatly enhances the acoustic reflection. These findings help to predict seafloor sediment types by analyzing echo strength. Springer-Verlag, 2007 Du Dewen Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong, China aut Chen Yongqi Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong, China aut Geo-Marine Letters Springer-Verlag 27/5(2007-10-01), 339-344 0276-0460 27:5<339 2007 27 367 https://doi.org/10.1007/s00367-007-0056-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00367-007-0056-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Du Dewen Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong, China aut NATIONALLICENCE 700 1- Chen Yongqi Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong, China aut NATIONALLICENCE 773 0- Geo-Marine Letters Springer-Verlag 27/5(2007-10-01), 339-344 0276-0460 27:5<339 2007 27 367 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer