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</html><description>From the same first arrivals, a continuous velocity section, plus a new year of updates. An offer for Easy Refract customers. &#x34F;&#x200C;&#xA0;&#x34F;&#x200C;&#xA0;&#x34F;&#x200C;&#xA0;&#x34F;&#x200C; Trouble viewing this email? Open in browser New edition Easy Refract &#xB7; new edition EASY REFRACT + TOMO: SEISMIC TOMOGRAPHY FROM YOUR FIRST ARRIVALS Watch the video (2 minutes, in Italian): from first arrivals to the velocity section, with rays and classes. Dear {firstname}, EASY REFRACT + TOMO is now available: the new edition of the program you use for seismic refraction. It includes all of Easy Refract and adds SEISMIC REFRACTION TOMOGRAPHY: from the same first arrivals it builds a CONTINUOUS VELOCITY SECTION, cell by cell, instead of a layered model. NOTHING NEW HAS TO BE ENTERED: spread geometry, geophone elevations and first arrivals are the ones already in your projects. Archived surveys can be reprocessed too. What you see beyond the GRM The GRM describes the ground as layers, with constant velocity in each layer. Tomography shows what a layered model cannot represent: BEDROCK TROUGHS, LENSES, WEATHERED OR FRACTURED ZONES, gradual velocity increases with depth. The two methods complement each other: the GRM refractors are overlaid on the tomographic section, so you see at once where the two readings agree and where the ground departs from the layered model. Read the article on seismic tomography &#x2192; What the Seismic tomography tab offers &#x2713; VP SECTION ON TOPOGRAPHY &#x2014; the grid follows the ground profile; cell size and depth set automatically or by hand. &#x2713; ROBUST COMPUTATION &#x2014; travel times with the Fast Marching method, least-squares inversion with a smoothness constraint, stopping at the picking error so the model is not fitted to noise. &#x2713; RAYS AND COVERAGE &#x2014; ray paths show where the section is reliable; ray-free zones can be hidden. &#x2713; VELOCITY CLASSES &#x2014; to read the section by zones (cover, dense deposits, weathered rock, bedrock), with editable descriptions and colours. &#x2713; EXPORTS AND REPORT &#x2014; image, XYZ grid for Surfer and spreadsheets, layered DXF, and a dedicated chapter in the calculation report. &#x2713; PUBLISHED VALIDATION &#x2014; the computation was compared with exact solutions, a reference model from the literature and a commercial program: the dossier is public. Your offer as an Easy Refract customer TOMO-UPGRADE You move to EASY REFRACT + TOMO for &#x20AC;400 instead of &#x20AC;990 (VAT excluded), and the price includes A NEW YEAR OF UPDATES from the purchase date: together with tomography you are back on maintenance, with all Easy Refract improvements and technical support. The link below puts Easy Refract + Tomo in the cart with the discount already applied. The code works only with the email of your GeoStru account, once. Move to Easy Refract + Tomo &#xB7; &#x20AC;400 HOW TO MOVE TO THE NEW EDITION After purchase you receive a new activation code. Update Easy Refract to the latest version, then in the program deactivate the old code and activate the new one: projects and settings stay as they are. The tab is turned on from the Project menu. Learn more &#x2022; The video two minutes, from the Seismic tomography tab to the report (in Italian) &#x2022; The blog article what tomography is, when to use it, how to acquire data and read the section &#x2022; The online manual parameters, display, velocity classes, exports &#x2022; The computation validation analytical cases, synthetic model and comparison: the public dossier &#x2022; The product page Easy Refract + Tomo in the shop ------------------------- We are at your disposal for any information. Best regards, THE GEOSTRU TEAM GeoStru  Engineering, geotechnical and geology software www.geostru.eu &#xB7; Easy Refract + Tomo &#xB7; Help online &#xB7; info@geostru.eu {address}  You receive this email as a GeoStru licence holder. Unsubscribe &#xA9; GeoStru &#xB7; web</description><thumbnail_url>https://www.geostru.eu/wp-content/uploads/brevo/geostru-logo.png</thumbnail_url></oembed>
