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Posts tagged Severn Estuary

Sediments and Phytoplankton Bloom by United Kingdom Coast – May 23rd, 2012

52.6N 0.8E

May 23rd, 2012 Category: Image of the day, Phytoplankton, Rivers, Sediments

United Kingdom - May 22nd, 2012

A bright blue phytoplankton bloom, separated into two close yet separate areas, can be observed in the North Sea off the coast of the United Kingdom. Also visible by the coast are sediments from several rivers. Southwest of the phytoplankton bloom are sediments from the rivers Witham, Welland, Nene and Great Ouse, in the Wash, the square-mouthed bay and estuary on the northwest margin of East Anglia on the east coast of England, where Norfolk meets Lincolnshire. It is among the largest estuaries in the United Kingdom. Further down the coast are sediments from the River Thames, east of London. On the opposite side of the island are sediments from the River Severn in the Severn Estuary and the Bristol Channel.

Sediments in the Bristol Channel, United Kingdom

51.4N 2.5W

October 31st, 2011 Category: Rivers

United Kingdom - October 28th, 2011

The Bristol Channel is a major inlet in the island of Great Britain, separating South Wales from Devon and Somerset in South West England. Here, it appears brown in color due to sediments. It extends from the lower estuary of the River Severn to the North Atlantic Ocean. It takes its name from the English city of Bristol, and is over 30 miles (50 km) across at its widest point.

The upper limit of the Channel is between Sand Point, Somerset and Lavernock Point in South Wales. East of this line is the Severn Estuary. Western and northern Pembrokeshire, and north Cornwall are outside the defined limits of the Bristol Channel, and are considered part of the seaboard of the Atlantic Ocean, more specifically the Celtic Sea.

Sediments from the River Severn, United Kingdom

May 2nd, 2009 Category: Rivers

United Kingdom - April 21st, 2009

United Kingdom - April 21st, 2009

Here, Wales and southwestern England are visible on a rare, cloud-free April day. The River Severn is spilling dark brown sediments towards the Celtic Sea.

The city of Cardiff, Wales, can be seen on its northern shore, and Bristol, England, on its southern shore. The Brecon Beacons mountain range can be seen in Wales, appearing as a brown area not far from the coast.

The River Severn is the longest river in Great Britain, at 220 miles (354 km). With an average discharge of 107 m³/s at Apperley, Gloucestershire, the Severn is England’s greatest river in terms of water flow, and is considered one of the ten major rivers of the United Kingdom.

The river becomes the Severn Estuary after the Second Severn Crossing between Severn Beach, South Gloucestershire and Sudbrook, Monmouthshire.

The river then discharges into the Bristol Channel which in turn discharges into the Celtic Sea and the wider Atlantic Ocean.

The Severn’s drainage basin area is 11,420 square kilometres (4,409 sq mi), excluding the River Wye and Bristol Avon which flow into the Bristol Channel. The major tributaries to the Severn are the Vyrnwy, Teme, Warwickshire Avon and Stour.

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