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BEGIN:VEVENT
DTSTART;TZID=Australia/Adelaide:20231111T100000
DTEND;TZID=Australia/Adelaide:20231112T150000
DTSTAMP:20260725T152801
CREATED:20230926T054714Z
LAST-MODIFIED:20231016T035715Z
UID:10008541-1699696800-1699801200@pesa.com.au
SUMMARY:Sedimentary Evolution of a South Australian Cambrian Rift
DESCRIPTION:PESA SA Field Trip\nSedimentary Evolution of a South Australian Cambrian Rift\nFrom a carbonate ramp to siliciclastic fluvio-deltaics in a tectonically active Cambrian rift. How did the Delamerian clastic basin fill evolve and why? \nSaturday 11th and Sunday 12th November 2023 \nAn opportunity to investigate the Cambrian evolution of South Australia through the spectacular coastal exposures in the Fleurieu peninsula.  \nRhodri Johns and Elinor Alexander will lead the field trip. \nThe full excursion is two days. Participants will have the option of participating in either or both days. \nThe first day will be spent examining the carbonate ramp deposits of the Sellick Hill Formation and the clastic turbidites of the Carrickalinga Head Formation at Myponga and Carrickalinga. Here signs of the early evolution of the Delamerian rift will be viewed. \nThe second day will be spent viewing the spectacular outcrops of The Fishery Beach section on the south coast near Cape Jervis. Here a magnificently exposed prograding clastic sequence\, including Carrickalinga Head turbidites and the shallow marine deltaics of the Backstairs Passage Formation\, are overlain by the incised valley fill turbidites of the Cooalinga Member. \n  \n\nSaturday\, November 11th.\n\nSelf-drive to meet at the south Myponga Beach car park for a 10am start. \nOnce we have examined Sellick Hill Formation exposures\, it’s a short drive to Carrickalinga Head to spend more time looking at the turbidite facies\, to finish at about 4. \nAttendees may wish to partake of a cleansing ale at Fork Tree Brewery\, Carrickalinga\, on the way back to Adelaide – a separate purchase. \n  \nYou may also wish to make a weekend of it on the beautiful Fleurieu Peninsula – organizing your accommodation on Saturday 11th. \n  \n\nSunday\, November 12th.\n\nSelf-drive to meet at the Fishery Beach car park – 5km south of Cape Jervis\, for a 10am start. \nWe will then walk along the coastal sections to finish at about 3. \nAttendees may wish to partake of a cleansing ale at Kick Back Brewing\, Aldinga\, on the way back to Adelaide – a separate purchase. \n  \nPESA Members: $20 per day. Non-Members:  $30 per day. Students (limited places): no charge \n  \nSelf-drive field trip – carpooling encouraged. BYO lunch. \n  \nRegistrations are limited. \n  \nContact Alex Ross 0434 569 936 alexross@fastmail.fm \n  \nBookings close 5 pm Monday 6th November 2023
URL:https://pesa.com.au/events/sedimentary-evolution-of-a-south-australian-cambrian-rift/
LOCATION:SA
CATEGORIES:Excursion,SA / NT,Technical Lunch
ATTACH;FMTTYPE=image/avif:https://pesa.com.au/wp-content/uploads/2023/09/fieldTrip.avif
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Perth:20231026T120000
DTEND;TZID=Australia/Perth:20231026T143000
DTSTAMP:20260725T152801
CREATED:20231009T044411Z
LAST-MODIFIED:20231016T034703Z
UID:10008542-1698321600-1698330600@pesa.com.au
SUMMARY:PESA SA/NT October Technical Luncheon The CO2 Storage Resources Management System
DESCRIPTION:The CO2 Storage Resources Management System (SRMS): what it is and how it was applied at Moomba\nJohn Kaldi\nEmeritus Professor & CO2CRC Distinguished Scientist\nUniversity of Adelaide \nPaul Lyford\nReserves & Resources Manager\nSantos Limited \n  \nAbstract\n\nThis talk aims to create awareness of the recently published Guidelines for Applications of the CO2 Storage Resources Management System (SRMS). The SRMS was first published in 2017 and is now sponsored by the world’s foremost industry-focused professional societies\, including SPE\, AAPG\, SEG\, SPWLA\, EAGE\, SPEE and WPC. The Guidelines were released in June 2022 and are available from the SPE bookstore. Although a voluntary system\, the intent is that regulators\, government departments\, and financiers will be able to draw upon the experience of managing petroleum resources to advise on the management of carbon dioxide storage resources. \nThe SRMS is modelled on the Petroleum Resource Management System (PRMS). This was a deliberate choice aimed at making the development of storage resources clearer by drawing parallels with the well-known and well-understood process of maturing petroleum resources. The need to show that injected CO2 can be contained in a geologic formation is the key difference between exploring for CO2 storage resources and exploring for petroleum accumulations. \nAccording to the SRMS\, a CO2 storage resource is defined as the quantity (mass or volume) of CO2 that can be stored in a geologic formation. This storage can be in geologic structures (e.g.\, an anticline) or in regionally extensive dipping geologic formations. The storage mechanisms are geologic (structural and stratigraphic)\, residual\, solubility\, and mineral trapping\, and an inherent consideration in any storage resources is that displaced fluids (e.g.\, brine or hydrocarbons) are managed. \nA significant case study from Santos’ Moomba CCS project in the Cooper Basin is provided to demonstrate incorporation of SRMS in storage resource assessments. The Moomba project is the world’s first commercial CCS project to incorporate the SRMS system and to include the CO2 resource in a company’s annual report.   As more experience is gained through the development of commercial projects such as Moomba\, the SRMS and Guidelines undoubtedly will be updated. \n  \n\nEvent Details:\nThursday\,  October 26th\, 2023\nLuncheon: 12 pm for a 12:30 pm start \nPlace: Ayer’s House\, 288 North Tce\, Adelaide \nIncludes a 2-course lunch and drinks \nBookings close 1 pm Monday\, 23rd August\nAny late bookings will incur an additional $20 fee. Strictly no walk-ins.
URL:https://pesa.com.au/events/pesa-sa-nt-october-technical-luncheon-cretaceous-depositional-environment-interpretation-of-offshore-otway-basin-cores-and-wireline-logs-copy/
LOCATION:SA
CATEGORIES:SA / NT,Technical Lunch,Technical Talk
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20231022
DTEND;VALUE=DATE:20231028
DTSTAMP:20260725T152801
CREATED:20250521T085639Z
LAST-MODIFIED:20250521T085639Z
UID:10008688-1697932800-1698451199@pesa.com.au
SUMMARY:Field Geology Club Excursion: The Tate Museum and the secret life of crystals and minerals
DESCRIPTION:We invite you to the Field Geology Club-Hosted Event \nExplore The Tate Museum and learn about the secret life of crystals and minerals from Frances Williams (half day excursion) \nPlease note that this event has been organized externally – please reach out to the Field Geology Club for more information: \n contact@fieldgeologyclubsa.org.au or via their website http://fieldgeologyclubsa.org.au. \nDate: 27th July 2025
URL:https://pesa.com.au/events/field-geology-club-excursion-the-tate-museum-and-the-secret-life-of-crystals-and-minerals/
LOCATION:SA
CATEGORIES:Excursion,SA / NT
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20231022
DTEND;VALUE=DATE:20231028
DTSTAMP:20260725T152801
CREATED:20230623T044840Z
LAST-MODIFIED:20230623T044840Z
UID:10008518-1697932800-1698451199@pesa.com.au
SUMMARY:Field Geology Club October Excursion: The Grampians – Their Geological Evolution
DESCRIPTION:We proudly invite you to the Field Geology Club-Hosted Event: \nOctober excursion day to The Grampians to learn about the geological evolution that had occurred in and around the area. \nOrganised by Peter Briggs\, as part of the Field Geology Club. Please note that this event has been organised externally – please reach out to the Field Geology Club for more information\, at: contact@fieldgeologyclubsa.org.au\, or via their website at: http://fieldgeologyclubsa.org.au. \nDate: 22nd (sunday) – 27th (friday) October
URL:https://pesa.com.au/events/field-geology-club-october-excursion-the-grampians-their-geological-evolution/
LOCATION:SA
CATEGORIES:Excursion,SA / NT
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Adelaide:20231008T084500
DTEND;TZID=Australia/Adelaide:20231008T170000
DTSTAMP:20260725T152801
CREATED:20230829T072536Z
LAST-MODIFIED:20230903T063949Z
UID:10008425-1696754700-1696784400@pesa.com.au
SUMMARY:PESA SA - Field Trip McLaren Vale: Geology of Wine
DESCRIPTION:We proudly invite you to this year’s Field Trip to McLaren Vale\nThe Geology of Wine\nReturning due to Popular Demand! \nSpend a day touring McLaren Vale – hear about the influence of geology on wine\, taste local wines and visit key outcrops with Professor Alan Collins. Enjoy a relaxing two-course lunch at the historic Victory Hotel\, Sellicks Hill. Includes coach to-from Adelaide\, Maxwells winery guided wine tasting and Victory Hotel two-course lunch. Additional wine available to be purchased separately. \n  \nCoach departs Beach Energy\, 80 Flinders St\, Adelaide \nDeparture: 8.45 am for a 9 am start \nReturn: Approx. 5 pm back to Beach Energy \n  \nPlease book early – this popular field trip sold out last year! Contact Alex Ross 0434 569 936 alexross@fastmail.fm for more info. \nBookings close 5pm Monday 2nd October
URL:https://pesa.com.au/events/pesa-sa-field-trip-mclaren-vale-geology-of-wine/
LOCATION:SA
CATEGORIES:Excursion,SA / NT,Technical Lunch
ATTACH;FMTTYPE=image/avif:https://pesa.com.au/wp-content/uploads/2023/08/pesa.avif
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20231005
DTEND;VALUE=DATE:20231006
DTSTAMP:20260725T152801
CREATED:20230623T043550Z
LAST-MODIFIED:20230623T043550Z
UID:10008516-1696464000-1696550399@pesa.com.au
SUMMARY:Field Geology Club Meeting: Extinct Megafauna at Lake Callabonna
DESCRIPTION:We proudly invite you to the Field Geology Club-Hosted Event: \nMeeting and discussion on extinct megafauna at Lake Callabonna. \nOrganised by Dr Aaron Camens & Associate Professor Trevor Worthy\, as part of the Field Geology Club. Please note that this event has been organised externally – please reach out to the Field Geology Club for more information\, at: contact@fieldgeologyclubsa.org.au\, or via their website at: http://fieldgeologyclubsa.org.au. \nDate: Thursday 5th October
URL:https://pesa.com.au/events/field-geology-club-meeting-extinct-megafauna-at-lake-callabonna/
LOCATION:SA
CATEGORIES:SA / NT,Technical Talk
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Adelaide:20230928T120000
DTEND;TZID=Australia/Adelaide:20230928T143000
DTSTAMP:20260725T152801
CREATED:20230904T000939Z
LAST-MODIFIED:20230928T011002Z
UID:10008427-1695902400-1695911400@pesa.com.au
SUMMARY:PESA SA/NT September Technical Luncheon  "Cretaceous depositional environment interpretation of offshore Otway Basin cores and wireline logs"
DESCRIPTION:Cretaceous depositional environment interpretation of offshore Otway Basin cores and wireline logs; application to the generation of basin-scale gross depositional environment maps\nPresented by: Chris Cubitt\nDeputy Director Geoscience & Exploration \nGeoscience and Exploration Branch | Energy Resources Division – DEM \nChris.Cubitt@sa.gov.au \n  \n  \nAbstract\n\nGas production from the Inner Otway Basin commenced in the early 2000s but the deep-water part of this basin remains an exploration frontier. Historically\, the understanding of plays in this region were largely model driven and therefore the ground-truthing of depositional environments (DE) and gross depositional environments (GDE) are critical. This aspect has been investigated for the Sherbrook Supersequence (SS) by the integration of legacy wireline and core data\, with regional 2D seismic facies mapping of new and reprocessed data from Geoscience Australia’s 2020 Otway Basin seismic program. Core observations were matched to wireline logs and seismic facies with resulting well based DE interpretations calibrated to seismic resolution Regional GDE intervals. Integration of well and seismic observations lead to the compilation of a basin-wide Regional GDE map for the Sherbrook SS. This GDE map indicates the distribution of Sherbrook SS play elements such as source rock\, seal and reservoir\, especially across the Deep Water Otway Basin where well data is sparse. \n\n\nEvent Details:\nThursday\,  September 28th\, 2023\nLuncheon: 12 pm for a 12:30 pm start \nPlace: Ayer’s House\, 288 North Tce\, Adelaide \nIncludes a 2-course lunch and drinks \nBookings close 1 pm Monday\, 25th August\nAny late bookings will incur an additional $20 fee. Strictly no walk-ins.
URL:https://pesa.com.au/events/pesa-sa-nt-september-technical-luncheon-cretaceous-depositional-environment-interpretation-of-offshore-otway-basin-cores-and-wireline-logs/
LOCATION:Ayers House – Ballroom\, 288 North Terrace\, Adelaide\, South Australia\, 5000
CATEGORIES:SA / NT,Technical Lunch,Technical Talk
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END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20230924
DTEND;VALUE=DATE:20230925
DTSTAMP:20260725T152801
CREATED:20230623T044328Z
LAST-MODIFIED:20230623T044429Z
UID:10008517-1695513600-1695599999@pesa.com.au
SUMMARY:Field Geology Club September Excursion: Maslin/Willunga
DESCRIPTION:We proudly invite you to the Field Geology Club-Hosted Event: \nSeptember excursion day to Maslin/Willunga. \nOrganised by Kym Dixon & Mike Burrell\, as part of the Field Geology Club. Please note that this event has been organised externally – please reach out to the Field Geology Club for more information\, at: contact@fieldgeologyclubsa.org.au\, or via their website at: http://fieldgeologyclubsa.org.au. \nDate: Sunday 24th September
URL:https://pesa.com.au/events/field-geology-club-september-excursion-maslin-willunga/
LOCATION:SA
CATEGORIES:Excursion,SA / NT
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20230907
DTEND;VALUE=DATE:20230908
DTSTAMP:20260725T152801
CREATED:20230623T043253Z
LAST-MODIFIED:20230623T043253Z
UID:10008515-1694044800-1694131199@pesa.com.au
SUMMARY:Field Geology Club Meeting: Ralph Tate Memorial Lecture - Fossils and Rocks\, Culture and Communication
DESCRIPTION:We proudly invite you to the Field Geology Club-Hosted Event: \nThe Ralph Tate Memorial Lecture on fossils and rocks\, culture and communication. \nOrganised by Dr Marissa Betts\, as part of the Field Geology Club. Please note that this event has been organised externally – please reach out to the Field Geology Club for more information\, at: contact@fieldgeologyclubsa.org.au\, or via their website at: http://fieldgeologyclubsa.org.au. \nDate: Thursday 7th September
URL:https://pesa.com.au/events/field-geology-club-meeting-ralph-tate-memorial-lecture-fossils-and-rocks-culture-and-communication/
LOCATION:SA
CATEGORIES:SA / NT,Technical Talk
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20230827
DTEND;VALUE=DATE:20230828
DTSTAMP:20260725T152801
CREATED:20230605T064915Z
LAST-MODIFIED:20230623T042004Z
UID:10008507-1693094400-1693180799@pesa.com.au
SUMMARY:Field Geology Club Excursion: Victor Harbor's Hot Granite & Cold Ice
DESCRIPTION:We proudly invite you to the Field Geology Club-Hosted Event: \nAugust excursion day to Victor Harbour to see the remains of the harbour’s hot granite & cold ice. \nOrganised by  Mark Dale and helpers\, as part of the Field Geology Club. Please note that this event has been organised externally – please reach out to the Field Geology Club for more information\, at: contact@fieldgeologyclubsa.org.au\, or via their website at: http://fieldgeologyclubsa.org.au. \nDate: Sunday 27th August
URL:https://pesa.com.au/events/field-geology-club-excursion-victor-harbors-hot-granite-cold-ice/
LOCATION:SA
CATEGORIES:Excursion,SA / NT
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Adelaide:20230824T120000
DTEND;TZID=Australia/Adelaide:20230824T143000
DTSTAMP:20260725T152801
CREATED:20230804T085614Z
LAST-MODIFIED:20230829T051151Z
UID:10008414-1692878400-1692887400@pesa.com.au
SUMMARY:PESA SA/NT August Technical Luncheon  "Critical Minerals in SA – The road to net zero"
DESCRIPTION:Critical Minerals in SA – The road to net zero\nPresented by: Bronwyn A Camac (Geological Survey of South Australia)\n\n  \nAbstract \n\nFor about 150 years\, the use of petroleum products has driven world economies and is the greatest influence on quality-of-life improvement.\nBefore then\, we burned whatever we could find\, to keep us warm\, to fuel our emerging technologies\, and to cook our food. But most of these fuels could not keep up with population growth. Our forests were being pillaged\, our health declined due to coal pollution and our oceans stripped of whales.\nOur societies turned to the emerging new fuel – oil and its cleaner partner\, natural gas. We found its value more than just a fuel – we could make things from it – plastic\, clothes\, medicines\, fertilisers\, cosmetics\, and the list goes on and on. So\, dependent upon these products\, it becomes difficult to imagine that we can ever do without them.\nBut that time has come\, just as with wood\, coal and whales\, the market has outgrown us\, demanding cleaner fuels and products which has no effect on the earth and its climate.\nThis single most disruptive event of the last 150 years is being addressed in all countries to drive our economies toward net-zero carbon emission. To support net-zero targets\, the market is moving towards new technologies\, such as electric vehicles\, renewable technologies\, space technology\, telecommunication and defence. All of these technologies need critical minerals.\nThis is space where the mineral resource industry and the energy resource industry collide!\nCritical minerals are described by Geoscience Australia as “minerals that are essential to our modern technologies\, economies and national security\, and whose supply chains are vulnerable to disruption.”\nSouth Australia is well-endowed with many of the minerals and metals projected to be in short supply as this energy transition progresses. SA is rich in copper and currently holds 69% of Australia’s copper resource. It is a major producer of mineral sands\, with their associated rare earth elements and is rich in graphite. A state-wide study is currently underway to uncover SA’s full resource potential\, putting us at the forefront of the world’s energy transformation. \n\n\nEvent Details:\nThursday\,  August 24th\, 2023\nLuncheon: 12 pm for a 12:30 pm start \nPlace: Ayer’s House\, 288 North Tce\, Adelaide \nIncludes a 2-course lunch and drinks \nBookings close 1 pm Monday\, 21st August\nAny late bookings will incur an additional $20 fee. Strictly no walk-ins.
URL:https://pesa.com.au/events/pesa-sa-nt-august-technical-luncheon-critical-minerals-in-sa-the-road-to-net-zero/
LOCATION:Ayers House – Ballroom\, 288 North Terrace\, Adelaide\, South Australia\, 5000
CATEGORIES:SA / NT,Technical Lunch,Technical Talk
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END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20230821
DTEND;VALUE=DATE:20230826
DTSTAMP:20260725T152801
CREATED:20230626T083902Z
LAST-MODIFIED:20230813T082957Z
UID:10008520-1692576000-1693007999@pesa.com.au
SUMMARY:Structural Geology training course by Prof. Ken McClay
DESCRIPTION:The PESA SA-NT Branch will be hosting a 5-day structural geology training course by Professor Ken McClay from Monday 21st to Friday 25th of August. Bookings are now OPEN!! \nThis five-day classroom course consists of lectures\, seismic interpretation exercises and case histories. The course presents modern concepts of structural geology focused on fault and fold systems that form hydrocarbon traps in sedimentary basins. Emphasis is placed on the integration of data in order to determine the 4D evolution of structures\, their seismic expressions as well as utilising case histories and natural examples that can be analogues for sub-surface hydrocarbon traps. \nThe lectures are extensively illustrated with field examples\, remote sensing examples\, seismic sections\, conceptual models and in particular analogue models of fault systems – many models are shown as movies that demonstrate the progressive evolution of fault and fold systems. Practical exercises and examples are excellent seismic examples of structural styles in a large format A3 workbook. \nKey Themes of the training are given below\, and more details are in the attached Programme: \n1. Fault systems in sedimentary basins – Tectonic regimes; fault mechanics; fault geometries; fault growth & segmentation patterns\n2. Extensional fault systems – Planar extensional faults – 2D & 3D geometries; rift systems & passive margins; folding associated with extension\nListric & ramp-flat listric extensional faults; delta tectonics – hydrocarbon systems\n3. Inversion tectonics – Positive inversion systems; inverted rift basins & thick-skinned fault systems\, hydrocarbon systems in inverted terranes\n4. Strike-slip terranes – Tectonic settings of strike-slip systems; oblique convergence; transform faults; characteristic styles of strike-slip structures\n5. Thrust fault systems – Thrust fault & fold geometries; key structural styles; 2D & 3D modelling of thrust fault systems; thrust-fault-related fold systems; foreland fold & thrust belts; deepwater fold & thrust faults – delta systems and accretionary prisms. \n  \nRegular prices of: \n\nPESA Member:   $5500\nNon-Member:    $6000\nStudent:               $75\n\n  \nFor this event we will only be selling: \n\nPESA Member: 10 tickets\nNon Member: 6 tickets\nStudent: 4 tickets\n\n*A couple ticket spaces are still available!* If the tickets below are listed as ‘sold out’\, please contact us to arrange a spot for you. \nTicket sales close Sun 13th Aug @6pm
URL:https://pesa.com.au/events/structural-geology-training-course-by-prof-ken-mcclay/
LOCATION:SA
CATEGORIES:SA / NT,Short Course
ATTACH;FMTTYPE=image/avif:https://pesa.com.au/wp-content/uploads/2023/06/structural_geology.avif
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20230803
DTEND;VALUE=DATE:20230804
DTSTAMP:20260725T152801
CREATED:20230605T065134Z
LAST-MODIFIED:20230623T041718Z
UID:10008508-1691020800-1691107199@pesa.com.au
SUMMARY:Field Geology Club Meeting: Carbon Capture - The Big Issues
DESCRIPTION:We proudly invite you to the Field Geology Club-Hosted Event: \nMeeting and discussion on hot topic carbon capture – and discussing the big issues around it. \nOrganised by Prof. John Kaldi\, as part of the Field Geology Club. Please note that this event has been organised externally – please reach out to the Field Geology Club for more information\, at: contact@fieldgeologyclubsa.org.au\, or via their website at: http://fieldgeologyclubsa.org.au. \nDate: Thursday 3rd August
URL:https://pesa.com.au/events/field-geology-club-meeting-flinders-ranges/
LOCATION:SA
CATEGORIES:SA / NT,Technical Talk
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20230730
DTEND;VALUE=DATE:20230731
DTSTAMP:20260725T152801
CREATED:20230605T064548Z
LAST-MODIFIED:20230623T040410Z
UID:10008505-1690675200-1690761599@pesa.com.au
SUMMARY:Field Geology Club Excursion: Indoor Laboratory Activities
DESCRIPTION:We proudly invite you to the Field Geology Club-Hosted Event: \n1/2-Day Indoor Laboratory Activities \nOrganised by Cynthia Pyle and helpers\, as part of the Field Geology Club. Please note that this event has been organised externally – please reach out to the Field Geology Club for more information\, at: contact@fieldgeologyclubsa.org.au\, or via their website at: http://fieldgeologyclubsa.org.au. \nDate: Sunday 30th July
URL:https://pesa.com.au/events/field-geology-club-excursion-indoor-laboratory-activities/
LOCATION:SA
CATEGORIES:Excursion,SA / NT
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Adelaide:20230727T120000
DTEND;TZID=Australia/Adelaide:20230727T143000
DTSTAMP:20260725T152801
CREATED:20230324T004429Z
LAST-MODIFIED:20230725T061545Z
UID:10008498-1690459200-1690468200@pesa.com.au
SUMMARY:PESA SA/NT July Technical Luncheon
DESCRIPTION:A seismic source field trial in the Bass Strait: Testing the impact of several different source configurations on geophysical quality\, received sound\, and direct impact on scallops and lobsters\nPresented by: John Cocker (Beach Energy)\n\n  \nAbstract:\nBeach Energy acquired a seismic source technology field trial in Dec 2021 in the shallow waters (50-80m) of the Bass Strait. The trial consisted of eight source tests acquired along two 2D lines\, including: a full-size array (2480 cu.in.) with Sercel G-GUN II in a wide-tow triple source configuration\, eSourceTM (2098 & 1049 cu. in.)\, reduced size (300\, 700 & 1260 cu.in.)\, and Distributed Source tests including Shearwaters Apparition test (140 & 340 cu.in.). A test of a 70 cu.in. airgun was also recorded during a whale mitigation procedure. The aim of the field trial is to investigate whether any of these source options: \n1. Provide the required geophysical data quality \n2. Significantly alter the received anthropogenic sound levels (SPL and SEL) \n3. Changes the impacts on benthic invertebrates via analysis of scallop and lobster specimens placed on the seafloor \nThis combined data will then be used to determine if any of the alternative source options are suitable replacements for conventional full-sized arrays and if any provide a meaningful reduction to potential impact on marine organisms. \nThe study was performed in conjunction with the Institute for Marine & Antarctic Studies\, Fisheries Research & Development Corporation\, Curtin University\, and the Department of Natural Resources & Environment Tasmania. \nScallop and lobster specimens as a model species for crustaceans and molluscs were placed on the seabed below the full array (triple and single source)\, both eSource arrays and one control location. The specimens were assessed over 6 months for physical damage\, chronic effects and survival\, pH\, refractive index\, total and differential haemocyte cell counts\, DNA damage and biochemistry. Lobsters were also assessed for righting ability. The results will not be available until Q4 2023. Noise loggers were collocated with the specimens to measure received sound. \nThe data processing was completed by Shearwater. The results show that all options result in lower S/N raw shot gathers; but also\, that modern processing algorithms are able to compensate for most of this through noise attenuation\, deblending and designature. eSource (2098 and 1049 cu.in.) and the reduced source size options provide very similar final stack and migrated gather quality to the full array. Both apparition tests (140 & 340 cu.in.) were very similar in 2D stack quality but with slightly lower S/N below 4Hz and above 64Hz. The data quality of the other distributed source tests was better in the shallow but worse in the deep due to poor randomisation achieved. There are differences in gather quality that require further investigation. These results demonstrate that alternative sources and/or smaller volumes have the potential to meet survey objectives whilst reducing impact on marine life. \n  \nEvent Details:\nThursday\, July 27th\, 2023 \nLuncheon: 12 pm for a 12:30 pm start \nPlace: Ayer’s House\, 288 North Tce\, Adelaide \nIncludes a 2-course lunch and drinks \nBookings close Tuesday\, 25th July\nAny late bookings will incur an additional $20 fee. Strictly no walk-ins.\n 
URL:https://pesa.com.au/events/pesa-sa-nt-julytechnical-luncheon-a-seismic-source-field-trial-in-the-bass-strait-testing-the-impact-of-several-different-source-configurations-on-geophysical-quality-received-sound-and-di/
LOCATION:Ayers House – Ballroom\, 288 North Terrace\, Adelaide\, South Australia\, 5000
CATEGORIES:SA / NT,Technical Lunch,Technical Talk
GEO:-34.921667;138.609444
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Ayers House – Ballroom 288 North Terrace Adelaide South Australia 5000;X-APPLE-RADIUS=500;X-TITLE=288 North Terrace:geo:138.609444,-34.921667
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