Dartmouth, Devon, about 9 am. "], The British Geological Survey, BGS, has undertaken thorough work on British earthquakes. "Portsmouth inhabitants have felt earthquake tremors on at least four occasions in 1692, 1734, 1750 and 1834." The British Geological Survey said the quake had a depth of 10km and its epicentre was south of Portsmouth, Hampshire. A much slighter shock than the preceding, felt in Chichester and the immediate vicinity. "A strong earthquake, felt especially at Portsmouth, Chichester and Lewes, and at intermediate places along and near to the coast, but apparently at no great distance inland. Attended with a rumbling noise. There was significant flux and reflux of a tsunami at Cape Finisterre at fifteen minutes past twelve. The earthquake in Bedfordshire is the largest in the UK so far in 2020. BGS. [the text here has been slightly modified], . 6 September 1834, page 4, Spectator Archive. Two or three shocks. The causes of earthquakes in the UK are unclear, but may include "regional compression caused by motion of the Earth�s tectonic plates, and uplift resulting from the melting of the ice sheets that covered many parts of Britain thousands of years ago." The 2007 Kent earthquake was initially thought to have occurred in the Dover Straits, but later analysis showed it to have occurred directly under the town of Folkestone in Kent. 1755: LISBON EARTHQUAKE, EFFECTS ON THE SOUTH OF ENGLAND.  The Channel Tunnel was therefore designed to withstand those tremors. Abstract: Although the UK is not a strongly seismic region, the study of earthquakes in Britain presents many interesting points. [3.9M quake, depth 10km, location - 85km south of Portsmouth, in the mid- English Channel.] de Chim. The British Geological Survey later referred to an earthquake of magnitude 5 in this (Chichester-Isle of Wight) area, 1882 - Tsunami at Hurst Spit? Chichester and Portsmouth. (not known whether this affected the south coast). 6th April. About 2.30 -. The original report is preserved in the Archives of the Royal Society, but there are extracts from it in One worker said it felt like a big lorry had gone by in a hurry." The report which he drew up was communicated to the Royal Society, but only a very brief summary was published (Roy. The Natural Environment Research Council said the earthquake began at 11.03pm on Friday." Faculty of Natural and Environmental Sciences, [Note there was another earthquake at Liskeard and surrounding area on the 1st June 2001. They end beneath the Gault unconformity and do not normally continue up through the Chalk. Bristol and other places in Somerset Arthur Beckett. At 9:18 am the earthquake struck, centred mainly in the villages of Wivenhoe, Abberton, Langenhoe, and Peldon causing the surrounding area to rise and fall violently as the waves spread, lasting for around 20 seconds. September 29th, Between 1 and 2 am. August 3rd. Southern England is not a location of major plate tectonics and it only shows some limited activity in terms of fault movement at the present time. 9.40am. Its effects covered an area of six million square miles - twice the size of Australia." (with some earthquakes affecting this area but also throughout England etc. The quake occurred just before midnight and its epicentre was in the Bristol Channel 25 miles (40kms) west of Bude on the Cornish coast, a spokesman for the British Geological Survey said. Injuries: no serious injuries; one person with minor head injury. An earthquake felt at different places, but especially at Southsea (seafront region south to Portsmouth), between Easter and Whitsuntide (Davison, 1924). DORSET AREA, INCLUDING POOLE AND BRIDPORT, DORSET AREA, INCLUDING POOLE AND BRIDPORT. [It is of interest that the oilfields in this area are generally limited by a Late-Cimmerian boundary fault, normal (hading northward) and originally extensional, not exactly straight, and which does not penetrate the Chalk. (Wikipedia List and also the West Sussex Info Website - http://www.westsussex.info/cocking.shtml)] (Wikipedia List and also the West Sussex Info Website - http://www.westsussex.info/cocking.shtml)]. (UK Historical Earthquake Database. "It lasted perhaps ten minutes, has retrospectively been measured at nine on the Richter scale, and unleashed the same day a tidal wave that wiped out much of the harbour area of town, and set off tremors that were felt in Hamburg, in Cork and even on Loch Lomond, where the water suddenly lurched upwards. They are listed here as "Davison intensity 5" and should not be confused with a modern magnitude system. Mallet. Ref. The shock was a tremulous motion and was preceded by a low rumbling sound." Cat. It follows a tremor of M3.9 earlier in July. Chichester, December 6th, centred around the town, (Davison Intensity 5). No. Mallet, 1858. Proceedings of the Geologists' Association, vol. (Probably an aurora)" [quoted from Mallet, 1858, p. 134; original source - Doddesley's Annual Register, vol. This phaenomena lasted fifteen minutes. Earthquakes - British Geological Survey Website. The shock is said to have been felt at Longleat. "A shock felt very generally in and near Portsmouth as far [east] as Arundel. Two later quakes in the Dover Strait, in 1776 and 1950, both thought to be around magnitude 4, were noted in the 1984 compilation by R.M.W. [- although check that this is the correct 1833 shock, since there was another, see below] It was felt at Havant. Mallet (1858).] (Wikipedia List and Earthquake Track) Depth 10km. Musson (1994) suggested a possible epicentre near Chichester on the basis of what is stated concerning places where the earthquake was felt. Chichester. 61. -------- Area affected 330 square miles (much smaller than the 1750 earthquake. (Mallet, 1852). Chichester is situated near a north-south fault system deep beneath the English Channel. Portsmouth at 10.35 a.m.. "At Portsmouth the agitation of the sea was so great that 70 and 86 gun-ships rolled to the extent of 3 feet." (Davison, 1924). The oilfield, only a few kilometres to the north, is licenced to iGas or Island Gas. About 4.3 ML. 1878. May 30th. [Further note re Chichester Earthquakes "In the autumn of 1833, a centre [earthquake centre] near Chichester, which had been in action from time to time for nearly two centuries, gave rise to a series of moderately strong earthquakes that continued for nearly two years. (Davison, 1924, p. October 1st, middle of the night. Most of these oilfields have a major boundary fault of Late Cimmerian, extensional type to the south. 1926. [.. continues. It has commented briefly regarding the Chichester area as follows, in a webpage - The ignis fatuus ["Will of the Wisp" - ignited methane] - had been often seen some days before the earthquake. Chichester. [i.e. 1274. This is probably the cause of the smell of pitch and sulphur and the cloud. 31st March. "I have had a violent attack of illness: but by keeping in my bed the whole of Wednesday, I am now, thank God, tolerable. Portions of several buildings and many chimneys were thrown down in London. They are not intended for assessment of risk to property or to life. See particularly: Mexico, Alaska and the English Channel: Earthquakes 23-30 July 2014. No. 2005, 16th July, Horsham, West Sussex. At Penzance beach it is interesting that water-escape structures were actually seen during their formation. No. Fig. There has to be a correction for distance of the seismometer from the focus of the earthquake, and certain types of waves are used for measurement. It was accompanied with such a noise, that it was supposed something must have happened in the large drawing room. No. Spectator article. Thus other earthquakes that have affected southern England are included. the Bembridge or Chichester - St. Valerie Line ) Cole, A. The Tale of One City - Portsmouth, Online. 1834. The list is not comprehensive. 1834, October 5th. 1821, p. 20). referred to by Mallet, 1858, p. 63], [1666. [Note added in the book: The shock of the earthquake here alluded to was the most severe of several which about that time were experienced on the line of coast from Portsmouth to Chichester. du Globe. By R.W.M. (Davison intensity 5). It lasted 5 hours. A copy of the book is available, free, online. [1692. "A smart shock of an earthquake was felt at Portsmouth on Wednesday night last week, about ten o'clock. The earth, the sea, the sky - and beyond. 3., p. 338). (no details). Several houses were much shaken, and some slight damage was sustained. (within an hour of the Lisbon Earthquake). [Note there was another earthquake at Liskeard and surrounding area on the 1st June 2001. (A very useful listing, with a map and a system of finding earthquake information by date. The Worthing Wobble: Teacups rattle on the south coast after earthquake strikes in the English Channel. Chichester. (it not known whether it affected the English Channel coasts). UK Historical Earthquake Database). 1834. The Natural Environment Research Council said the earthquake began at 11.03pm on Friday." It is not impossible that some faults have not been reactivated in Tertiary times and they might provide a pathway. In Pay de Galles (France) - Accompanied by a rain of blood [i.e. 111 (Milne, vol. The same happened at Dover. Also reported to have been recorded at Havant and Portsmouth. December 5th. Mallet, 1858. They have received 474 calls from people worried about the impact of the 4.3 magnitude tremor on their homes.