SRS Tech Media Relations’ Post

Here's today's nugget ;) What is OBN 4C components in brief? OBN (Ocean Bottom Node): Seismic sensors placed on the ocean floor to record seismic data. They are used to gather high-quality WAZ long offset seismic data. 4C (Four Component): Refers to the four components of data recorded by the OBN: P and Z => PP Upgoing and downgoing wavefields: ------------------------------------------------------------------------- P Component (Hydrophone): Measures the pressure changes in the water, which are predominantly caused by P-waves (primary or compressional waves). P-waves are the fastest seismic waves and travel through both liquid and solid media. Z Component (Vertical Geophone): Measures the vertical component of ground motion, which is also predominantly influenced by P-waves as they cause ground particles to move in the direction of wave propagation (which includes a significant vertical component). The Z component records the vertical motion, capturing both upgoing and downgoing P-waves, thus reflecting the PP (primary-primary) wavefield. Why PP? Both P and Z components are primarily sensitive to P-waves. The PP wavefield consists of P-waves that travel from the source, reflect off subsurface layers, and return as P-waves. The gathers for these components show the propagation of P-waves, making them PP gathers. X and Y => Radial (PS) wavefields: ------------------------------------------------------------------------- X Component (Horizontal Geophone 1): Measures the horizontal component of ground motion in one direction (often inline with the survey line). Sensitive to shear waves (S-waves) and converted waves (PS waves). Y Component (Horizontal Geophone 2): Measures the horizontal component of ground motion in the orthogonal horizontal direction (often crossline to the survey line). Also sensitive to shear waves (S-waves) and converted waves (PS waves). Why PS? Both X and Y components are sensitive to shear waves (S-waves), which do not travel through liquids but are generated when P-waves reflect off a boundary and convert to S-waves. The PS wavefield consists of waves that start as P-waves, convert to S-waves upon reflection, and then return as S-waves. The gathers for these components show the propagation of converted waves, making them PS gathers. Radial (PS) wavefields ?? The X and Y components are initially recorded in the instrument's local coordinate system. These coordinates might not align with the actual source-receiver geometry. Rotation aligns the horizontal components with the source-receiver line, They are decomposed into radial and transverse components relative to the source-receiver direction. The radial component aligns with the direction of wave propagation, while the transverse component is perpendicular to it.

New geophysical solutions can’t just be better…….they must be cheaper. Talaria was set up to directly address technical solutions required by clients which could not only offer improved technical solutions but do so at a much lower cost-base than anything before. This to enable a much broader application across a number of industries especially in engineering and new energies. The tools didn't exist, so Talaria have built a development portfolio to start to change this. • Semi-autonomous seabed node - seismic and more from any vessel. • 3rd order derivative seismic wave field sensor - something beyond 6C. • 6C ferro-fluid capacitance based passive seismic sensor - 0.1-15Hz. • Land node for passive seismic and electrical surveying in real-time. • Full column PAM with pressure and particle velocity and real-time alerts. • Lorentz Force high energy shear source - forget solenoids. • 3DHPR streamer - holographic imaging brings <1m bins with 100m swaths. ....and married with new integrated processing and inversion systems with ML driven inference for real-time analytics. Superlatives are overused in our business so I don't use them. Rather I think it is enough to say that we see the opportunity to reduce some survey costs by a factor of four and deliver a better technical solution. #TalariaTechnology #node #seabedseismic #seismicsensor #offshorewind #ccus #geothermal #geotechnical #mineralexploration

Innovation in a conservative industry - yes better can be cheaper. Battery power? A bit yes, but generally no. So, there has been a significant response to the post I made last week (https://lnkd.in/d24Z_JWq) Lots of questions and interest which I am very appreciative of and a request for some more information. It is not simple to address these publicly without upsetting some folks especially my patent lawyers, but I think useful to at least try to help explain the nature of the innovation process. One key query was on the power system for the semi-autonomous seabed node. First, this device does not 'swim' around, it travels vertically (true) at high speed thus enabling much improved seabed coupling than even the latest seabed recording systems (also addressing some of the S/N queries). There was also a presumption that it must use a huge battery and/or have very limited endurance on the seabed. No! It does not use a battery to principally power its way to the seabed. These features also help make the system compact (40cm tall) and cheaper to build and use. The reason for pointing these things out is that the presumptions in some of the queries point to a somewhat 'traditional' way of thinking we see in systems development in our industry which ultimately end in not achieving what our clients need. Better data at a significantly lower cost base.

Summit SAEDACCO’s seismic refraction services are a unique geophysical technique used to study subsurface properties Generally speaking, seismic waves travel faster through dense or rigid materials and slower through less dense or malleable material. By analyzing the refractions of these waves, Summit SAEDACCO’s geophysicists can map subsurface structures and identify potential infrastructure and other underground assets. Seismic Refraction is a valuable geophysical technique that provides insights into the geological and geotechnical characteristics of an area. It’s applications are diverse and include site investigations for environmental assessments as well as construction. By better understanding the subsurface, our customers can make more informed decisions to increase safety and efficiency of their various projects. The Summit SAEDACCO Geophysical Division is supported by one of the industry’s largest teams of full-time, highly experienced geophysicists with multiple crews dispatched daily. Each crew is equipped with the latest in geophysical technology, including GPR, electromagnetic scanning, radio frequency line locating equipment, and high-tech drones. Summit SAEDACCO’s combination of equipment and experience is unequalled. Customers count on us for a wide range of services from near-surface infrastructure detection to precise downhole geophysics and logging. We are a trusted source for pre-drilling or pre-excavation clearance, private utilities, underground storage tanks (tank sweeps), drums, septic structures, rebar, landfill and buried waste delineation, karst terrain and bedrock mapping, and electrical resistivity profiling. For more information on Summit SAEDACCO’s multi-faceted approach and geophysical solutions, call Lauren DiVello at 609-238-2815 or email LDivello@summitdrilling.com. You can also use our convenient “Start-a-Project” page https://lnkd.in/gzC6y_BG to provide details about your scope of work and upload reference documents. A Summit SAEDACCO representative will respond promptly. To get more posts about Summit SAEDACCO’s Geophysical services, FOLLOW US when you visit our company LinkedIn page. #utilitylocation #USTdetection #Septicsystemdetection #boreholegeophysics #electricalresistivity #seismicrefraction

Ground Penetrating Radar (GPR) is a non-destructive method that uses radar pulses to image the subsurface. Here are some key points about GPR surveys: Transmission: A GPR system transmits high-frequency radio waves (usually in the range of 10 MHz to 2.6 GHz) into the ground through an antenna. Reflection: When these waves encounter different subsurface structures or materials, they are reflected back to the surface. Reception: The reflected signals are captured by a receiver antenna. Analysis: The time it takes for the signals to return, and their strength, provide information about the subsurface structures. Applications of GPR: Archaeology: Detecting and mapping buried artifacts, structures, and graves. Geology: Investigating bedrock, groundwater, and ice. Construction: Locating utilities like pipes and cables, and assessing the condition of roads and bridges. Environmental Studies: Identifying and mapping contaminants or voids. Forensics: Locating buried bodies or evidence. Military: Detecting tunnels, mines, and unexploded ordnance. Conducting a GPR Survey: Preparation: Obtain necessary permissions and identify any potential hazards. Equipment Setup: Choose the appropriate antenna frequency based on the survey depth and resolution requirements. Calibrate the GPR equipment. Data Collection: Move the GPR system over the survey area in a grid pattern. Ensure consistent speed and coverage. Data Processing: Use specialized software to process the collected data. Create images or maps of the subsurface features. Interpretation: Analyze the processed data to identify and characterize subsurface structures. Advantages of GPR: Non-destructive and non-invasive. Can provide high-resolution images of the subsurface. Versatile and applicable in various fields. #GPRSaudiArabia #GroundPenetratingRadarKSA #GeophysicsSaudiArabia #SubsurfaceExplorationKSA #SaudiInfrastructure #SaudiGeophysics #SaudiTechnology #SaudiDevelopment #GroundPenetratingRadar #Geophysics #SubsurfaceExploration #GeophysicalSurvey

Subsurface Utility Mapping #SUM #SIM #DGT Locating and mapping the underground involves multiple remote sensing technologies working in unison to achieve the desired results from a subsurface investigation. The final result is a comprehensive digital file that depicts the underground environment in great detail. However, while the mapping systems we use become more robust and sophisticated, the ability to decipher the results becomes more complicated. As a utility survey, we need to extract the data from our various sensors and correlate all the data, including the source data, into a single source document.  For example, our wide-array Ground-Penetrating_Radar is a powerful tool that allows us to map the underground more quickly than ever. However, the skill sets and competency required to extract the necessary details require significant effort and knowledge of these geophysical tools and the underground networks. To a highly trained and qualified geophysics expert, it's easy, but extracting the details from radar data can be like reading ancient hieroglyphics. Fortunately, one of the significant exports of radar data software is a top-down view of the underground, slice by slice, inch by inch. These video examples are not only great to view, but they can also be excellent QA/QC tools for performing a final review in the final stages of a project. The multiple road scars in this video tell a compelling story about the new utility installations over the past 100 years. #SIM #SUM #utilitymapping #campus #gpr #utilitylocating #bridges #transportationdesign #submersibe #undergroundutilities #facilitiesmanagement #highereducation #damageprevention #riskmanagement #campussafety #mobilemapping #mappingthefuture #digitaltwin #subsurface #subsurfacesolutions #surveying #survey #mapping #gis #environment #team #CFTA2024

It is always a great delight to see your work accepted and published in a peer reviewed journal like Near Surface Geophysics. André Bredeck, Volkmar Schmidt, and I would like to share our findings with those interested in #UXO #detection, #geophysics, #borehole and #GPR. We hope it helps with open questions, in case of upcoming problems, and inspires more research in this field. The article is open access and can be found at https://lnkd.in/e4BDngdG