{"id":51,"date":"2026-03-04T23:48:00","date_gmt":"2026-03-04T23:48:00","guid":{"rendered":"https:\/\/192.168.1.91\/?page_id=51"},"modified":"2026-05-20T11:28:15","modified_gmt":"2026-05-20T10:28:15","slug":"the-project","status":"publish","type":"page","link":"https:\/\/echo.arditi.pt\/?page_id=51","title":{"rendered":"ECHO project"},"content":{"rendered":"\n
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E<\/strong>arthquakes, C<\/strong>urrents, H<\/strong>ydroacoustics, and O<\/strong>ceanography with Distributed Acoustic Sensing<\/h1>\n\n\n\n

Project ECHO<\/strong> (2024.13655.PEX)<\/a> is a short-duration experiment aimed at determining empirical transfer functions between apparent strain observed with Distributed Acoustic Sensing and ground motion, temperature, and pressure.<\/p>\n\n\n\n

Distributed Acoustic Sensing (DAS<\/a>)<\/strong> is a technology that can turn ordinary fibre-optic cables into long chains of sensors that measure apparent deformation (or strain), allowing to monitor the environment with high detail over large distances. Because many fibre-optic cables already exist, DAS can provide a relatively low-cost way to observe places that are otherwise difficult to monitor, such as the seafloor.<\/p>\n\n\n\n

However, to use this technology reliably in seismology<\/a> or oceanography<\/a>, we must first understand exactly how the signals recorded in the cable relate to different physical quantities.<\/p>\n\n\n\n

The ECHO project<\/strong> aims to solve this problem. It will study how different environmental factors, such as ground motion, temperature, water pressure, and ocean currents, affect the signals recorded in the GeoLab<\/a><\/strong> fibre-optic cable. To achieve this, the project will place different scientific instruments along the cable, including seismometers, hydrophones, current meters, and temperature, pressure, and conductivity sensors. By comparing the measurements from these instruments with the signals recorded by the cable, we will determine how to translate DAS apparent strain measurements into accurate information about the physical world.<\/p>\n\n\n\n

The project will collect and analyse these data to better understand earthquakes, ocean conditions, and underwater sound<\/a>. It will also explore additional applications, such as building earthquake catalogues from DAS data, detecting marine mammals<\/a> through their vocalizations, and estimating sea conditions from cable measurements.<\/p>\n\n\n\n

By improving the way fibre-optic cables can be used as sensors, the ECHO project<\/strong> will expand the tools available to study the Earth and the oceans, helping to improve our understanding of natural hazards and marine environments.<\/p>\n\n\n\n

All results and selected datasets<\/a> produced by the ECHO project<\/strong> will be openly shared at the conclusion of the project, under F.A.I.R. principles.<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Earthquakes, Currents, Hydroacoustics, and Oceanography with Distributed Acoustic Sensing Project ECHO (2024.13655.PEX) is a short-duration experiment aimed at determining empirical transfer functions between apparent strain observed with Distributed Acoustic Sensing and ground motion, temperature, and pressure. Distributed Acoustic Sensing (DAS) … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":112,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-51","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/echo.arditi.pt\/index.php?rest_route=\/wp\/v2\/pages\/51","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/echo.arditi.pt\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/echo.arditi.pt\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/echo.arditi.pt\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/echo.arditi.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=51"}],"version-history":[{"count":23,"href":"https:\/\/echo.arditi.pt\/index.php?rest_route=\/wp\/v2\/pages\/51\/revisions"}],"predecessor-version":[{"id":837,"href":"https:\/\/echo.arditi.pt\/index.php?rest_route=\/wp\/v2\/pages\/51\/revisions\/837"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/echo.arditi.pt\/index.php?rest_route=\/wp\/v2\/media\/112"}],"wp:attachment":[{"href":"https:\/\/echo.arditi.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=51"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}