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Survey of underwater gas pipelines on the Ob River with parametric sediment echosounder SES
Levchenko, O.V. (2006). Survey of underwater gas pipelines on the Ob River with parametric sediment echosounder SES, in: Evolutions in hydrography, 6th - 9th November 2006, Provincial House Antwerp, Belgium: Proceedings of the 15th International Congress of the International Federation of Hydrographic Societies. Special Publication (Hydrographic Society), 55: pp. 206-210
In: (2006). Evolutions in hydrography, 6th - 9th November 2006, Provincial House Antwerp, Belgium: Proceedings of the 15th International Congress of the International Federation of Hydrographic Societies. Special Publication of the Hydrographic Society, 55. International Federation of Hydrographic Society: London. 234 + cd-rom pp., more
In: Special Publication (Hydrographic Society). Hydrographic Society: London. ISSN 0309-8303, more

Available in Author 
Document type: Conference paper

Keywords
    Echosounders; Gases; Pipelines; Surveying underwater; Russia, Siberia, Ob R.

Author  Top 
  • Levchenko, O.V.

Abstract
    There are many different risks of damage for underwater pipelines, especially for their involuntary free spans over the shallow-water areas. The first SES survey on the Ob River in 2005 evidences high effectiveness and usefulness of this narrow beam parametric sediment echosounder for engineering monitoring of underwater gas pipelines. All free spans of the underwater pipelines both hung in water column and exposed on river’s bottom were revealed very reliably, including very narrow scours by 5-10m wide and 4-5m deep. Pipes buried by sediments were revealed there sometimes in depth up to 5m beneath the river bottom. The collected SES data over the Ob River could be very important for scientific researches of topography-forming and sedimentological processes and subaqueous flow-transverse bedforms in rivers as well as for modeling of the after-effects due to anthropogenic intervention in natural regime of the rivers.

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