About the Study

SCOPAC Committee

Chairperson Councillor Mrs M Penfold MBE, West Dorset District Council.

Vice-Chair Councillor Jackie Branson, Havant Borough Council.

Technical assistance provided to Councillors by Mr Lyall Cairns (Southern Coastal Group Chair) and Dr Samantha Cope (SCOPAC Research Chair).

Introduction & Acknowledgements

Methods

Map Design, Symbols & Reliability

User Guide

Bibliographic Database

The STS 2012 update

The 2012 update of the SCOPAC Sediment Transport Study (STS) was funded by the Environment Agency under FDGiA, grant number LDW 41230, with additional contributions from SCOPAC.

It is referenced as: New Forest District Council (2017). 2012 Update of Carter, D., Bray, M., & Hooke, J., 2004 SCOPAC Sediment Transport Study, www.scopac.org.uk/sts.

Sediment Transport Study 2012

HOME BIBLIOGRAPHIC DATABASE

The maps contain the summary of the sediment transport features. The arrows indicate major sediment sources and net pathways through the littoral, nearshore and offshore regions. Transport rates are assumed to represent bedload transport since there are few reliable sources of quantitative suspended load (which is assumed to be ubiquitous). Transport boundaries and drift convergence or divergence are shown. The location of the arrow is indicative only.

An arrow represents the following information:

 Type of process/sediment transport mechanism

 Direction of movement

 Dominant sediment type

 Transport volume

 Reliability of information

Map Design

Map Symbols

KEY	Sediment transport mechanism	Definition
LT	Littoral (beach) drift	Gross and net rates and volumes of shore-parallel transport by tidal and/or wave-induced currents; pathway directions
O	Offshore sediment	Movements of sediment entirely in the offshore zone, including inference of direction(s) from bedforms and banks, bars etc.
E	Cliff / Coastal slop erosion	Sediment yield composition; weathering and erosion processes; erosion rates and input volumes
EO	Estuarine sediment	Directions and volumes of sediment transport within, and at the mouths of, estuaries by tidal currents and/or waves; sediment composition; thicknesses and volumes
F	Wave driven nearshore and offshore zone	Movement of sediment in the nearshore zone driven by waves
FL	Fluvial input	Sediment delivered to estuaries and open coasts via river discharge; composition and input volumes
WO	Wave driven onshore to offshore	Output from beaches; tidal deltas and nearshore bar topography; transport rates and volumes
T	Tidal driven	Tidal currents are the exclusive method of transport
A	Aeolian	Wind transported net onshore input, normally to beach backshores and dunes; dune stabilisation
N	Beach and Estuary recharge / nourishment / recycling	Volumes of input, with initial and subsequent dates; sediment composition; post-nourishment / recycling gains and losses; role of control structures
Table 1: Sediment transport mechanisms

Table 1 below is used to define the sediment transport mechanism referred to in the maps.

Each individual map is ‘legend limited’ so that only the symbols used in the map extent are available on the individual map legend. Figure 1 below defines all the map symbols that could potentially be used on the maps for overall use.

Figure 1: Map Symbology

Reliability

The reliability of information used to define the arrows on the maps has also been represented, as seen in Figure 1. Table 2 below defines the criteria required to meet each reliability category.

Reliability	Information source	Criteria
High	Field studies or well validated models	Temporally representative
		Spatially representative
		Appropriate methodology
		Appropriate statistical analysis
		Fully referenced
		Independent corroboration available
Medium	Some original data sources but temporally or spatially unrepresentative	Some analytical deficiencies
		Review study with some dubious material
		Results which are difficult to attribute as high reliability
		Incomplete referencing
Low	Unrepresentative data or generally not primary resources	Short-term measurements
		Weak experimental design
		Too generalised
		Mostly secondary sources
		Unattributed information
Table 2: Reliability criteria

01	Start Point to Berry Head
02	Berry Head to Hope's Nose (Tor Bay)
03	Hope's Nose, Torquay to Holcombe
04	Holcombe to Straight Point (including Exe Estuary)
05	Straight Point to Otterton Ledge
06	Otterton Ledge to Beer Head
07	Beer Head to Lyme Regis
08	Lyme Regis to West Bay
09	West Bay to Portland Bill
10	Isle of Portland and Weymouth Bay
11	Redcliff Point to Durlston Head (Purbeck)
12	Durlston Head to Handfast Point
13	Handfast Point to South Haven Point (Studland Bay)
14	Poole Harbour
15	Poole Harbour Entrance to Hengistbury Head (Poole Bay)
16	Hengistbury Head to Hurst Spit (Christchurch Bay)

Quaternary History of the Solent
17	Hurst Spit to Calshot Spit (Western Solent Mainland)
18	Southampton Water
19	River Hamble to Portsmouth Harbour Entrance
20	Portsmouth, Langstone and Chichester Harbours
21	Portsmouth Harbour Entrance to Chichester Harbour Entrance
22	North West Isle of Wight
23	North East Isle of Wight
24a	South West Isle of Wight
24b	South East Isle of Wight
25	East Head to Pagham, West Sussex
26a	Pagham to Littlehampton
26b	Littlehampton to Shoreham-by-Sea
27a	Shoreham-By-Sea to Newhaven
27b	Newhaven to Beachy Head