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sealord > Coastal flooding and storm damage > Rocquaine beach wall damage 120308 3650 smg
sealord > Coastal flooding and storm damage > Rocquaine beach wall damage 120308 3648 smg
sealord > This image shows the St. Peter Port, Guernsey waterfront 27 minutes after high water on 10 March 2008. The high tide was already receding. High water was forecast for 9.8 metres at 0815 but because the barometric pressure had fallen to 973 mb Hg the tide rose to 10.7 metres according to the St. Peter Port harbour master, Captain Peter Gill. The wind was from the south-west and as St. Peter Port is on the east coast it was sheltered from the strong winds. The high tide closed the waterfront main road to vehicles for about one hour. File No. 100308 3562 ©RLLord fishinfo@guernsey.net
sealord > This image shows the St. Peter Port waterfront buildings reflected in the sea that rose to cover the coast road during the early morning high tide of 10 March 2008. High tide was forecast for 0815 at 9.8 metres. I photographed Havelet Bay during high tide and didn't arrive at the St. Peter Port waterfront until about half an hour after high water when the tide had already receded. The waterfront road was closed to traffic because cars driving through the sea had produced waves that entered some waterfront properties. The road remained closed for about one hour. Because of the low barometric pressure of about 973 mb Hg the high spring tide rose to a height of 10.7 metres according to St. Peter Port's harbour master, Captain Peter Gill. File No. 100308 3579 ©RLLord fishinfo@guernsey.net
sealord > This image was taken about 15 minutes after high water as a wave breaks against the granite wall protecting the coast road from Havelet Bay. Several waves did crash over the wall and seawater flowed to the opposite side of the road but the road remained open. High tide was forecast for 0815 at 9.8 metres but due to a low barometric pressure of 973 mb Hg the tide rose to a height of 10.7 metres according to Captain Peter Gill, St. Peter Port's harbour master. The wind was blowing from the south-west so the east coast was protected from the worst weather. Captain Peter Gill informed me that in 1948 the tide reached a height of 11.3 metres in St. Peter Port when the wind blew from the south-east. At that time the sea rose high enough to complete cover some of the St. Peter Port harbour quays. File No. 100308 3556 ©RLLord fishinfo@guernsey.net
sealord > Coastal flooding and storm damage > St Peter Port flooded waterfront 100308 3568 smg
sealord > This image shows the flooded St Peter Port, Guernsey waterfront during the morning high spring tide of 10 March 2008. High water was meant to reach 9.8 metres at 0815 but because the barometric pressure was only 973 mb Hg according to the Guernsey weather website the tide actually reached a height of 10.7 metres according to St. Peter Port harbour master Captain Peter Gill. This image was taken 27 minutes after high water as the tide was already receding. High water completely flooded the coast road, which was closed to vehicles for about one hour although several bicycles did manage to cycle through. File No. 100308 3561 ©RLLord fishinfo@guernsey.net
sealord > This image taken on the southern side of Belle Greve Bay on Guernsey's east coast shows a field of the brown kelp, Laminaria ochroleuca, exposed by an extreme low water spring tide on the 21st March 2007. The Laminaria ochroleuca kelps have cylindrical stipes (or stems). In the middle of the image in the foreground there are some kelps with broad, belt-like stipes. These belong to the furbelows, Laminaria hyperborea. In the background is Salerie Corner and the Salerie quay. File No. BG 210307 7547 ©RLLord fishinfo@guernsey.net
sealord > This image shows the lower shore of Belle Greve Bay after ormer (abalone) gatherers have turned over boulders looking for the elusive mollusc. All the pale boulders have been overturned and left upended. Many marine biologists visiting Guernsey from the UK have commented on the damage done to the shore by shore gatherers not returning boulders back to their original position after turning them over to look for the ormer. The tops of the boulders are covered by algae and particularly the pink crustose coralline algae, which issues pheromones which attract settling ormer, Haliotis tuberculata, larvae. The base of boulders are covered in many sessile invertebrate species including spirorbid tubeworms, bryozoan colonies, and ascidian colonies. When boulders and cobbles are turned over and not returned to their original position the algae that were growing on the top die and the invertebrate colonies from the base of the rock die too. The boulder quickly becomes colonised by opportunistic green algae and gradually over time and through succession a more complex community of species adheres to the boulders. If the boulders are turned over too often and the shore suffers too much disturbance macroscopic species diversity deceases. There is a hypothesis that intermediate disturbance allows for the greatest species diversity. File No. BG 210307 30-890 Copyright©RLLord fishinfo@guernsey.net Boulders turned over BG 210307 30-890
Rocquaine beach wall damage 120308 3650 smg
Coastal flooding and storm damage > Rocquaine beach wall damage 120308 3650 smg
Rocquaine beach wall damage 120308 3650 smg
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