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Walking through the dune vegetation can destroy the plants, which in turn destabilises the dunes, furthering erosion. Find out more. Therefore, coastal landforms are built and maintained by deposition, as seen through the dune management at Collaroy beach. This was the first time that a hurricane-like storm had been observed in the upper atmosphere, and previously, it was uncertain whether they existed. Further understanding of them allows for predictions to be made about the response to these storms by the beach (Harley et al. Also the impacts and issues surrounding ongoing urban development. Transportation is when sediment is transported by currents, rivers, and constructive waves to a destination. This is seen in the literature where embayed beaches have been associated with severe erosion developing from the strong rips that develop in the beach morphology (Louriero et al 2012). The Gulf Stream is extremely important to the global climate because it provides moderating temperatures on neighboring land areas of the east coast of North America, the coasts of Western Europe and northwestern Africa, and other coastal areas along its path. Collaroy Beach has narrowed by up to 50m . The local community group has been protesting against a seawall for almost 30 years. Exclusive homes located on Sydney's Collaroy Beach are in danger of collapsing after high tides and huge waves caused severe erosion for a second night. We do everything we can to keep our dynamic coastline safe and acting naturally before and after erosion. But it's the many beachfront homes around Australia already losing a decades-long battle to erosion that are on borrowed time before their Australian dream becomes a Collaroy nightmare. A further spring tide is expected on Tuesday night. How much biotin should i take for facial hair growth. Storm surges, which cover a smaller area than hurricane winds, cause the most damage. 2011). Scientific reports,7(1), pp.1-9. Dune management is often utilized to maintain Collaroy beach. PABX- 09612120000, 8432361-3 FAX-88-02-8432094 Storm surge and large waves produced by hurricanes pose the greatest threat to life and property along the coast. Geological control on beach form: accommodation space and contemporary dynamics. The headlands of Narrabeen- Collaroy (Figure 1c) create a localised gradient of wave exposure (Harley et al. and Short, A.D., 2017. The impacts from the storm highlight the increasing vulnerabilities of coastal communities to high-intensity storms which are predicted to increase in frequency with climate change. Heavy coastal erosion at Collaroy-Narrabeen Beach after Sydney storm. There is very little cross-equatorial flow of wind, as the main winds steer the storm away from the equator. Northern beaches residents have been worried about how their beloved beach would fare when large swells and high tides hit the controversial Collaroy seawall. 0:00 / 2:04. Harley told Guardian Australia there were two realistic ways to protect beaches and nearby properties. There are also Coastal Erosion Emergency Action Sub Plans in place for each of these beaches. Appendix 1.2 Script to create function to use for plotting the graphs. If we get another big swell over the next few weeks, unless the council mechanically moves sand in, this beach will be impassable.. The scene after the storm damaged properties at Collaroy in 2016. Credit:Peter Rae, The bund extends approximately 10 metres seaward and has been inspected and is intact. But we had to build a wall and weve done it strictly by the book.. The major geographical processes that form and transform coastal environments are erosion, transportation, and deposition. In total, seven homes and a unit block in Collaroy were evacuated as 8m waves slammed the coast leading to major erosion, police said. The severe flooding along the east coast prompted the Insurance Council of Australia to declare the sixth catastrophe warning in five months. An Australian East Coast Low (ECL, also called an extratropical cyclone) hit the Northern Beaches area of Sydney, Australia in June 2016 at an anomalous wave direction. 2017) with sand orientated to the wave angle (Daley et al. This is used to maintain Collaroy beach through dune management. Since then, residents, council and the state government have been working to protect the properties and beach from storm surges, with current work including building a seven-metre-tall concrete wall. 2016). AFLW trailblazer Daisy Pearce retires, praised for pioneering role, 20 year anniversary of Canberra bushfires, Long covid in children often missed by doctors, Australian soldiers to train Ukrainian recruits, Australian troops on their way to UK to help train Ukrainian forces, Sydney heads for warmest day in almost a year. Pre-storm the Southern profiles are narrower and create a reduced ability of the sand to form a natural buffer in a non-modal wave direction. The common processes of erosion include: hydraulic action and corrasion. Narrabeen-Collaroy has been monitored by monthly beach profiles since 1976 (Short and Trembanis 2004) initially completed using the Emery method (Emery 1961) but since 2004 to be RTK- GPS (Real-Time Kinematic Global positioning system). Some of them have clearly suffered a degree of structural damage," Prof Turner said. To estimate the volume change in the sand on the profile by summing the heights of the sand elevations from the AHD and dividing by distance along the beach (Appendix 1.3). Most communities are built on the southern end of beaches but they will be more exposed to the impacts of erosion because of easterly storms. The European model is run by The European Centre for Medium-Range Weather Forecasts in Reading, England. Surges are rises in the sea level as the storm approaches the coastline. This process is exacerbated as climate change disrupts normal wind patterns, changing how much energy can whip up waves, particularly during storms. Urban development is at risk of damage from these coastal changes and by changing coastal stability, development itself can actually increase erosion risks. Another two big storms further eroded the sand dune in July 2020. Followed categories will be added to My News. President of the northern beaches branch of the Surfrider Foundation, Brendan Donohoe, surveys the damage on Tuesday. Brendan Donohoe from Surfrider Foundation is a local whose organisation has been fighting against the construction of a seawall for three decades. Boulders were also brought in to strengthen the sea defences. A shift in the direction of the wave approach can subsequently reverse this process (Harley et al. Manly Andrew 'Boy' Charlton Aquatic Centre, Collaroy-Narrabeen Beach Coastal Protection Assessment, Collaroy-Narrabeen Beach Coastal Protection Assessment Figures, Collaroy-Narrabeen-Fishermans Beach Criteria for Foundations, Collaroy-Narrabeen Beach Coastal Protection Works Design Specifications, Collaroy-Narrabeen Beach Coastal Protection Works Benefit Distribution Analysis, Coastal Erosion Emergency Action Sub Plan, Coastal Erosion Emergency Action Information Brochure - Mona Vale & Bilgola, 2012 Water Resources Laboratory Technical Report ~ Sea Level Rise Coastal Hazard Risk Areas. He says the vertical wall has a smaller footprint on that section of beach than a rock revetment would have had. The wave angle orientation of the beach seen Figure 1a where the profiles have a greater extent in the North compared to the South. Four people died in the storms and another three are still missing. Credit:Brook Mitchell. Email:sign up for ourdaily morning briefing newsletter, App:download the free appand never miss the biggest stories, or get our weekend edition for a curated selection of the week's best stories, Social:follow us on YouTube,Facebook,Instagram,Twitteror TikTok, Podcast:listen to our daily episodes onApple Podcasts,Spotifyor search "Full Story" in your favourite app. Northern beaches residents have been worried about how their beloved beach would fare when large swells and high tides hit the controversial Collaroy seawall. He said more research would be needed to determine the extent the seawall played in Tuesdays erosion event, but that north-easterly waves were certainly a key driver in drawing sand off the beach. Beach rotation is a process which is associated with a response to wave direction (ibid) (Harley et al. Advertisement Phone: 8432046 We do everything we can to keep our dynamic coastline safe and acting naturally before and after erosion. Erosion typically occurs when the wave energy is high, which is influenced by strong winds and low-pressure weather. Huge waves have swept away up to 25 metres of sand from Collaroy beach, above, and Narrabeen beach. Collaroy Beach has narrowed by up to 50m . ECMWF wins most days. The Coastal StormSafe Guide, produced by the NSW State Emergency Service, outlines steps to protect your property in storms. The June 2016Australian East Coast Low: Importance of Wave Direction for Coastal Erosion Assessment. Patrick Allan has continued an almost 100-year-old family tradition of living in Collaroy, spending years surfing the waves, but hes planning on leaving the small seaside suburb. After the Sydney area experienced its wettest weekend in more than 20 years, beach erosion and massive amounts of sea foam can be seen at Collaroy on the Nor. Da Fontoura Klein, A., Fliho L.B., Schumacher, D., 2002. Coastal Zone Management Plan for Collaroy-Narrabeen-Collaroy Beach and Fishermans Beach Available at https://files.northernbeaches.nsw.gov.au/sites/default/files/finalczmpfor_collaroy-Narrabeen-Collaroybeachandfishermansbeach2016.pdf (Accessed 27/03/2021). It is associated with high-pressure weather where there is a low wave energy. I havent got a doubt in the world [that it will work], and no one has any doubts along here. The common processes of erosion include: hydraulic action and corrasion. Beach response to Australian East Coast Lows: A comparison between the 2007 and 2015 events, Narrabeen-Collaroy- Collaroy Beach. For instance, a current issue of Narrabeen headlands is how the hydraulic action of waves causes weaker layers of stone to be dissolved by the ocean. Sign up here. Embayment: the presence at their extremities of large physical barriers (i.e., headlands) trap alongshore-moving sediment. A record wave of 17.7m was recorded off the New South Wales south coast near Eden on Monday, smashing the existing state record, the NSW Nearshore Wave Transformation project reports. Beaches represent a dynamic interface between the coastline and the ocean. Which greek island features two pink beaches? For the latestflood and weather warnings, search onABC Emergency, Keep up with all the action on day 3of the Australian Open, Keep across all the live scores and results from the Australian Open at Melbourne Park. 2017). This forms a foredune and a backdude. The building of the seawall was the final nail in the coffin. Corrasion is when weaker layers of materials disintegrate or dissolve into the ocean. The project stretches 1.3 kilometres from Collaroy to South Narrabeen, encompassing 49 private properties dotted with 11 public land areas, which include a car park and a surf club. 2016). As the hurricane approaches, animals are moved into appropriate holding areas; smaller birds, mammals and reptiles may be housed in temporary kennels in main buildings, and larger animals bunker down in their normal indoor enclosures. D Day Storm Lessonslearnt, In proceedings of the NSW Coastal Conference, Coffs Harbour, Australia, 9-11November 2016. Conditions eased in the state of Tasmania on Tuesday and the worst of the weather has passed. A second spring tide hit the beach on Monday night, eroding the sand by another 5m and causing additional damage to the houses. Affected residents have since been placed in emergency accommodation until the situation can be resolved. Flood warnings remain in place for three rivers in Tasmania, with residents of Invermay and Longford told to evacuate. 2016). Can you use xbox 360 turtle beaches on xbox 1? Exclusive homes located on Sydney's Collaroy Beach are in danger of collapsing after high tides and huge waves caused severe erosion for a second night. The storm was observed during a period of low solar and geomagnetic activity. The ECL experienced on Narrabeen-Collaroy demonstrates the vulnerability of the Southern end of Narrabeen-Collaroy to erosion from a non-modal wave angle. Hurricane Dorian missed Puerto Rico, but thanks to Trump and others its future remains stormy. The storm waves have also affected nearby areas between Manly and Shelly beach, with waves crashing over the walkway. How long before the beaches are open after a hurricane? This service may include material from Agence France-Presse (AFP), APTN, Reuters, AAP, CNN and the BBC World Service which is copyright and cannot be reproduced. Collaroy-Narrabeen Beach is thebeach most vulnerable to erosion from coastal storms on the Northern Beaches. A seven-metre-high structure is being built below Collaroy residents properties, which overlook a beach that has become notorious for dramatic erosion. 2016) and the sand in front of the existing works in the Southern section of Narrabeen-Collaroy had been removed (Morrison et al. Don't miss out on the headlines from Nth Beaches. Therefore, coastal landforms are continuously shaped by geographical processes that present environmental issues to Narrabeen-Collaroy. Beachfront homes along Pittwater Road, Collaroy damaged by storms in 2016. Foaming six-metre waves clawed away 25m from the Collaroy-Narrabeen beach, one of Australia's worst erosion hot spots. Prof Turner said surveys indicated sand levels on the beach had dropped between 2m and 5m, with 150 cubic metres of sand stripped for every metre along the beach. 2011) which can lead to the process of rotation which is associated with the dominant wave direction of the beach (Castelle and Coco 2012). Collaroy Beach 50m narrower than it was on Saturday Killed attempting U-turn in NSW storms Collaroy Beach before and after photos show huge erosion from Sydney storms. Homes were damaged and a swimming pool was pulled into the ocean, costing homeowners and local government almost $25 million to fix. We acknowledge Elders past, present and emerging and the spirits and ancestors of the Clans that lived in this area. Please try again later. This will allow the properties to be protected and the sediment quantity increase within the embayment to form part of a long-term coastal protection programme. High winds and rain swept over the region, frightening many who lived here. The devastating toll of storm erosion on Sydney beaches has been captured in a series of before-and-after photos by an Australian aerial image company. Journal of Coastal Research , pp 442-458. Police make emergency declaration after shots fired in Tara, Breakthrough after hundreds of Legionnaires fall sick at once, 'Wow': Kokkinakis stunned by what he's called by reporter, After the sun comes the storms: 'Majority' of state to be lashed. State governments have been reluctant to step in, leading many property owners to call for the construction of seawalls to defend homes and businesses. This includes controlling new developments that could be damaged during storms, maintaining the protective vegetation on sand dunes, constructing and maintaining properly designed seawalls, as well as undertaking beach scraping and nourishment. They were concerned the sand directly in front of the seawall would be washed away, eroding their beach, and, on Tuesday, thats exactly what happened. High in the upper atmosphere, a spiral of plasma stretching more than 600 miles (1,000 kilometers) across, swirled above the magnetic North Pole for nearly eight hours. But the sand needed for beach nourishment is mined at a depth of 20 to 30 metres, and Australia has neither the policies to enable that nor the equipment to conduct it. For example, during sunny conditions in Collaroy beach, constructive waves transport eroded sediments from cliffs and headlands to build up the beach. Action to preserve and protect this beach is already underway including development and planning considerations regarding future hazards of wave impact and coastal erosion. These are Collaroy-Narrabeen Beach, Bilgola Beach and Basin Beach at Mona Vale. They are predicted to be more likely and more intense. 2002) to the beach planform (Harley et al. According to the research published by a team of international scientists, the first documented space hurricane occurred on Aug. 20, 2014. Decadal scale patterns in beach oscillation androtation Narrabeen-Collaroy Beach, Australiatime series, PCA and waveletanalysis. Harley warned that south Palm beach, Coogee and Stockton beach in Newcastle were at particular risk of erosion, as well as Collaroy. E- profile 8 shows a 56% reduction in the extent from 18/06/16 to 07/06/16. This presents a vital problem at Collaroy beach. University of Sydney coastal geomorphologist Professor Andrew Short said coastal erosion events were likely to become more frequent as climate change increased the likelihood of tropical cyclones and east coast lows. The Bureau of Meteorology issued another warning at midday on Monday for abnormally high tides, damaging winds, damaging surf and heavy rain for much of the NSW coast, including the metropolitan area. We acknowledge the Traditional Custodians, the Gayamaygal and Garigal and their Country on which we gather today. The multi-million dollar waterfront properties on Collaroy Beach lost backyards, decks and a swimming pool after 13m-high waves and a spring tide - known as a king tide in Australia - pummelled the beach. Passion fruit juice and orange juice make up the juice portion of the drink. The higher energy state is not common for the southern profiles (Harley et al. No other construction material has been observed washing into the sea. BEACHFRONT property owners saw water within a few metres of their backyards and heavy erosion after huge waves swept away part . 2017). Erosion transforms coastal landforms through hydraulic action and corrosion. Mr Donohoe and other concerned residents will attend a council development application meeting opposing plans to build the next section of the seawall in the coming months. Builders and architects of hurricane-resistant buildings should include four design features to combat moisture infiltration and accumulation during and after a hurricane event: deflection, drainage, drying, and durability. Action to preserve and protect this beach is already underway including development and planning considerations regarding future hazards of wave impact and coastal erosion. I believe that everyone should have free access to a wealth of information, which is why I started my blog jacanswers.com. Incredible drone footage of the destruction along Collaroy captured by our coastal monitoring team this morning after last nights king tide and massive waves. 2017) in the alongshore and the across-shore directions from the two extremities of the beach (da Fontoura Klein et al. Follow building regulations, and cooperate with Council requests for works around your property to make it safer. At least six homes in Collaroy were left on the brink of destruction after king tides eroded sand directly beneath them. They are domes of water that are about 40-50 miles (65 to 85 kilometers) wide. 2017). 2002). Waves swept up to the foot of houses on beaches where storm in 2016 destroyed a private pool and caused serious erosion. He added that, while Tuesdays conditions had been moderate, there were real concerns about how the coastline would fare during larger erosion events. Without the wall built here, wed be ripped into with the next storm, Orth says. Jackson, D.W.T. CCECC-led JV bags Bangladeshs first-ever Micro Tunneling Sewerage Project, Donald Lus Dhaka Visit: AL, BNP trying to take mileage, International tourist doubled in 2022: UN. The Hurricanes. This presents an environmental issue for Narrabeen as the sand fills up the lagoon making it unsuitable for the fauna and flora inhabitants. Holman, R.A., Symonds, G., Thornton, E.B. Northern Beaches Council, 2016. The storm weather brought abnormally high tides and strong winds and the citys heaviest rainfall in up to two decades, the Bureau of Meteorology said. Based on the reports received, Honduras and Nicaragua were the countries most damaged by Hurricane Mitch, followed by Guatemala and El Salvador and, to a lesser extent, Costa Rica and Belize. 2017). Men sand-bag properties on Collaroy beach Arlington Building and a run of houses to the north circa 1922. Using the MATLAB script based on (Gallop et al. A second spring tide hit the beach on Monday night, eroding the sand by another 5m and causing additional damage to the houses. Are you 6th form or undergraduate geographer? Figure 4; A- shows that Profile 1 reduced the overall extent of extent by 20m and a reduction in volume. Towards an everyday epistemology of economicgeography, To analyse the impact of the June 2016 ECL upon the shape of the beach profiles using empirical data from a long-term open-access database on MATLAB and to determine if the beach underwent rotation. Firstly, this report will outline the storm and the nature of Narrabeen- Collaroy and the methodology was undertaken to investigate impacts from the 2016 ECL using programming data from MATLAB. As a result, dried out sediments are carried by the wind towards the land. A common process of transportation is longshore drift. Profiles 6 and 8 show a steepening in shape due to loss of sand causing a reduction in the beach width. This is an issue because once the headlands are eroded, the beach will take the full force of the wave and its sand will be completely eroded. The non-modal wave angle caused a partial rotation of the sediment Southwards but lacked a full rotation due to the formation of a rip current from the Long Reef head which transported the sediment offshore. President of the northern beaches branch of the Surfrider Foundation, Brendan Donohoe, said Tuesdays conditions had been treacherous to beachgoers, leaving Collaroy Beach a hellscape. "They will require a very careful look before people can go back inside them.". The other option is beach nourishment, where you inject large amounts of sand, up to hundreds of thousands of cubic metres of sand, straight into the beach on a regular basis.. Earlier this year, residents lined the beach in a bid to encourage the council to invest in alternative measures to protect the beach, including a nourishment plan that would artificially replace the sand. Advertisement: [emailprotected], Gas prices hiked for power plants, industries and commercial users with effect from Feb 1, Donal Lu praises low extrajudicial killings in Bangladesh last year, Obaidul Quader pays courtesy call on Bashundhara Group Chairman, Collaroy Beach 'loses 50 metres' after Australia storm. The New South Wales government's Beachwatch program advises people avoid swimming at ocean beaches for one day after heavy rainfall, or for as long as storm water is present. Residents, including Orth, will cover 80% of the cost, with the rest paid for by the New South Wales government and the Northern Beaches council. Grenadine and simple syrup are added in for additional sweetness. A review conducted in 2009 by the then Department of Climate Change and Energy Efficiency, found that up to 247,600 homes were at risk of inundation if sea levels rose by 1.1 metres. Coastal erosion wears and breaks off materials along the coastline. Covered by sand, theyre usually only visible after major erosion events. A concrete seawall designed to stop coastal erosion is being built from Collaroy to South Narrabeen on Sydney's northern beaches. (2017) from due to the collision of the littoral cell with Long Reef point from increased wave energy changing the beach state (Wright and Short 1985;Harley et al. Required fields are marked *. (2022) Examining the impact of the East Coast Low Storm, June 2016 on Narrabeen-Collaroy Beach, Sydney, Australia. This Sub-plan identifies the risks and actions we can take before, during and after a coastal erosion emergency. The waves swash moves materials upwards and its backwash pulls the materials down. Bishop-Taylor says Point Stuart, a marshy area near Darwin, has lost roughly 500 metres over three decades, but this erosion was balanced by growth in the Gulf of Carpentaria, where the land is growing at a rate of 10 metres a year. How the material gets carried depends on its size. Ruth Park sketched a vivid first-hand account, during which two further storms have hit the beach, wiped away the sand at Main beach in Byron Bay, satellite data taken since the 1980s to map changes in the coast. Ive watched council do everything, dump truck loads of asbestos and everything here over the years, but now theyve let this private development application come through which is going to kill this beach, he said. To illustrate this, plants, such as the coastal wattle and coastal banksia are planted to maintain Collaroy beach. Large storms can move significant quantities of sand offshore, which can cause greater erosion on the beach. The Arena Media Brands, LLC and respective content providers to this website may receive compensation for some links to products and services on this website. To exemplify this, the sand from Collaroy is being transported by longshore drift to Narrabeen lagoon, which is an unprotected region. The damage caused to Southerly properties along Narrabeen-Collaroy raises further questions about the effectiveness of the beach management strategy employed by the Northern Beaches council to East Coast Lows, which are predicted to increase in frequency with climate change (Mortlock et al. What is so great about the british virgin island beaches? the citys heaviest rainfall in up to two decades, declare the sixth catastrophe warning in five months. Journal of Geophysical Research: Oceans,111(C1). Water and EnvironmentJournal, 14(2), pp.79-88. Most of the time this erosion occurs in remote places but increasingly it is affecting areas of high development too. The row of 10 houses along Collaroy's Pittwater Road, bought for a collective $22 million over the past 15 years, offered a rare opportunity to access a slice of ocean-front real estate in . Harley, M.D, Turner, L, Splinter, K, Phillips, M, Simmons, 2016. profiles = {PF1,PF2,PF4,PF6,PF8};dates = {07/01/2016,15/04/2016,29/04/2016,18/05/2016,03/06/2016}; for j = 1:5DataBeach = FindData(profiles{i},dates{j},T); Volume = sum(DataBeach(:,2)); HeatMapx(i,j) = Volume; xvalues={07/01/2016,15/04/2016,29/04/2016,18/05/2016,03/06/2016}; yvalues={PF1,PF2,PF4,PF6,PF8};heatmap(xvalues,yvalues,HeatMapx). How long should i leave my hair down after braids? Our beach is the thing we should be trying to insure not in the monetary sense but in the sense of its continued existence.. Did Hurricane Dorian affect Puerto Rico? King tides and the after-effects of ex-tropical cyclone Seth have caused erosion at Collaroy Beach. Scientific data,3(1), pp.1-13. Routes2(2): 80- 90. The low pressure cell, which developed last weekend, caused violent winds, flooding, rough surf and king tides. Auto news:Uber of the future revealed - drive.com.au, Your web browser is no longer supported. This level of erosion is not uncommon during large swell and tide events of this nature and is not a direct result of the seawall under construction. Watch on. Collaroy normally gets waves from the south and has a big headland that protects the beach from waves, but the combination of large tides and unusually north-east waves make beaches that would normally be protected, exposed, he said. By 7am AEDT on Monday, insurers had received 10,000 claims estimated to be worth $45m, the insurance council said. 2016) and creates beach profiles which have steeper faces (Wright and Short 1985). Showers are forecast to continue after Queensland's south east copped a drenching over the weekend. Nick Moir Most of the damage occurred on Saturday and Sunday nights, but a further five metres of erosion occurred during Monday night's king tide, Professor Turner said. Profile 2 located in the north of the beach is estimated to have lost 38% of its pre-storm sand volume. How long before the beaches are open after a hurricane? B of Profile 2 shows a greater amount of narrowing from 100m on the 3rd to 59m on the 6th . Harley, M.D., Turner, I.L., Short, A.D. and Ranasinghe, R., 2011. Oceanography,30(3), pp.120-125. Daly, C.J., Bryan, K.R., Roelvink, J.A., Klein, A.H.F., Hebbeln, D. and Winter, C., 2011. carbon paper asda, 560 lexington avenue kpmg, ark fjordur fenrir spawn command, python find second occurrence in string, dorman transmission drain plug kit, ivan drago wife actress, sarah benton married to mark benton, recollection road narrator, apollo 11 missing 2 minutes audio, burlesque examples in catcher in the rye, prospect high school football record, brent douglas biography, eaiaiqobchmiob_yqova givdo7tch2e3aqpeaayasaaegk44vd_bwe, who wrote let your living water flow, syracuse college of visual and performing arts,

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