Ian G. Stimpson

@hypocentre.bsky.social

2418 Followers 619 Following

Seismologist, geophysicist, structural geologist, geoconservationist, not necessarily in that order.

Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
A MacBook Air laptop running linux mint.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
On this day, June 7th, back in 1931 was the UK’s largest earthquake for which we can reliably estimate the magnitude. Occurring below the Dogger Bank in the North Sea, to the east of Bridlington was an earthquake with a magnitude estimated at 6.1. This would correspond to about 20 centimetres of slip on a fault 20 kilometres long. The felt area included the whole of the British Isles and much of northwest Europe, as far away as Denmark. The church spire at Filey was twisted with chimneys and plaster damaged around Bridlington Beverly and Hull. There are also reports of ‘earthquake lights’. The only recorded fatality was one Ellen Bradley in Hull, "unnerved as a result of the shakes”, apparently had heart attack the next day and died. Approximate location of 1931 Dogger Bank earthquake. Background Image: BGS 1:1,500,000 Tectonic map of Britain, Ireland and adjacent areas, Pharaoh et al. 1996.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
"You've got a man whose support is off the Richter scale in unpopularity at one end," says Mancunian Labour MP Graham Stringer. "And a man whose popularity is off the Richter scale at the other end."
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
Quarry face (c1580) in woodland. Tunnel entrance on left part of later landscaping (c1840).
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
A robin on a post.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
A variety of letter stencils. What we used to use before computers for labelling diagrams.
Line drawing of a rock thin section about 5mm across of a graphitic schist with crystals of garnet, chlorite, staurolite, kyanite and quartz in a folded biotite matrix
A red cap with ‘Make America Great Britain Again‘ embroidered on it.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
GPR depth slice at around 1m down showing a blue circle highlighting a ring barrow ditch and a red linear feature from a powerline cutting the northeast part of the structure.
Person pushing a radar kart across a green field.
Duo lingo 2500 day streak
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
Cover of book Charles Darwin, Geologist by Sandra Herbert
Rock face in woodland. Dark red Namurian Chatsworth Grit bleached yellow by fluids (probably hydrocarbons) flowing through fault zones.
Quarry face with steep-dipping limestones and a large rounded block in upper right. Near-vertical calc-turbidities with an inverted olistolith of carbonate mudmound reef.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
My ‘home’ for the last thirty-eight years - the ‘Will Smith’, a building actually named after two William Smiths, one the Father of Stratigraphy, the other an earlier cartographer and drawer of town plans. My office is in the older, white part of the building to the left behind the metasequoia, the newer brick-faced part is on the right behind a low hedge. The university still hasn’t replaced the single-glazed windows with metal frames, that don’t shut properly, in all that time.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 08:49:14 UTC 2025/09/07 M2.6 earthquake Pontefract, North Yorkshire, UK
Black needle-like crystals of stibnite in grey gypsum. Cotton Collection, Keele University.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 16:53:47UTC 2025/08/10 M6.1 western Türkiye earthquake
Schematic diagram of the formation of the Kamchatka tsunami from The Times with all sorts of issues.
Helicorder plot of Kamchatka earthquake 2025/07/29 recorded at Keele University, UK. Each line is one hour of data
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 23:24:50 UTC 2025/07/29 M8.8 Off East Coast Kamchatka earthquake
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 22:10:32UTC 2025/07/28 M6.9 Macquarie Islands region earthquake
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 01:29:02UTC 2025/07/25 M5.2 Azores earthquake
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 06:49:01UTC 2025/07/20 M7.4 Kamchatka earthquake
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 20:37:39UTC 2025/07/16 M7.3 Alaska earthquake
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 13:08:05UTC 2025/06/08 M6.3 Colombia earthquake
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 04:15:38UTC 2025/05/14 M6.4 Tonga Islands
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 09:49:10UTC 2025/04/23 M6.2 Türkiye earthquake
Location of 1884 Colchester earthquake. Background Image: BGS 1:1,500,000 Tectonic map of Britain, Ireland and adjacent areas, Pharaoh et al. 1996.
Green-coloured estuarine Gray Sandstone Group and red-coloured fluviatile Lower Old Red Sandstone rocks on a sandy beach with headlands in the middle and far distance. Turquoise sea and clear bluesky above.
Coal Measure strata dipping towards a sandy beach. Turquoise sea behind and bluesky above.
Foreground: steep dipping and folded grey Carboniferous Limestone (Blackrock subgroup). Middleground: Napoleonic fort on Thorne Island on Upper Old Red Sandstone (Skrinkle Sandstone). Background: Turquoise water of Milford Haven and Lower Old Red Sandstone. Bluesky above.
A yacht at anchor in a turquoise bay beneath a bluesky.
Pillow lavas as far as the eye can see. Three rocky headlands, turquoise sea and clear bluesky.
Coastal rocks, cliff path to left, turquoise sea to right and bluesky above.
approximate location of 1580 Dover Straits earthquake. Background Image: BGS 1:1,500,000 Tectonic map of Britain, Ireland and adjacent areas, Pharaoh et al. 1996.
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 20:04:38UTC 2025/04/04 M6.9 New Britain Region, Papua New Guinea earthquake
Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 14:09:29UTC 2025/04/03 M6.9 Reykjanes Ridge earthquake
Location of 1990 Clun Earthquake. Background Image: BGS 1:1,500,000 Tectonic map of Britain, Ireland and adjacent areas, Pharaoh et al. 1996.
Resistivity surveying with Keele church spire in background.
Prunus Martine. Small cherry tree covered with white blossom.