πŸ’§πŸŒ Greg CocksFeb 23, 2024
Wall Under The Baltic Sea - A 'Megastructure' Built By Stone Age Hunter-Gatherers
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https://www.npr.org/2024/02/22/1232694592/blinkerwall-stone-age-megastructure-hunting-underwater-baltic-sea <-- shared media article
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https://doi.org/10.1073/pnas.2312008121 <-- shared paper
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#GIS #spatial #mapping #remotesensing #sonar #marine #balticsea #baltic #seafloor #hydrospatial #archaeology #Mecklenburg #Germany #bay #seafloor #StoneAge #hunting #reindeer #hunters #huntergatherers #researchvessel #3dmodel #megastructure #holocene #UAV #hydroacoustic #imagery #sediment #sampling #paleolake #humandevelopment #Paleolithic #iceage #wall #blinkerwall
Steven J GibbonsDec 1, 2022

Magnitude 5.3 #earthquake on the mid-Atlantic ridge 20 minutes ago (2022-12-01Z11:02) These signals are not on seismometers but on hydrophones nearly a kilometer below the sea surface.
The stations are part of the United Kingdom contribution to the CTBT monitoring system. I have written about this network and how to obtain #hydroacoustic data: https://www.tandfonline.com/doi/full/10.1080/25751654.2022.2129948 (#OpenAccess)

https://earthquake.usgs.gov/earthquakes/eventpage/us6000j608/executive

The Hydroacoustic Network of the CTBT International Monitoring System: Access and Exploitation

The hydroacoustic network of the International Monitoring System for verifying compliance with the Comprehensive Nuclear-Test-Ban Treaty consists of six hydrophone array stations and five land-base...

Taylor & Francis
Steven J GibbonsNov 7, 2022
A few weeks ago I published an #OpenAccess paper in the Journal for Peace and Nuclear Disarmament. I examine the #hydroacoustic network of the #CTBTO and find which data is currently open via #IRIS
and show processing examples. I want to encourage exploitation of this data. https://doi.org/10.1080/25751654.2022.2129948 (thread)