Presentation on theme: "10 th June, 2010, Baja, Hungary Szilárd SÁRKÖZI expert on meteorology Solutions for supplying meteorological information to inland waterways – based on."— Presentation transcript:
10 th June, 2010, Baja, Hungary Szilárd SÁRKÖZI expert on meteorology Solutions for supplying meteorological information to inland waterways – based on experiences from accident investigations
2 10 th June, 2010 Baja, Hungary Whether the present-day radar equipped and highly powered ships are affected by the weather on inland waterways – calmer than seas –, and whether the skippers require such information at all? If accident investigations state that it can be a factor in casualties – no matter in what relation and in how many cases – the answer should be: yes!
3 TSB No :25, 21 st November, 2006, Budapest, 1643 rkm towboat collided to a city bridge-pier, foundered sinking avoided by manoeuvreing onto the riverbank Experiences from accident investigations on the Danube by the TSB of Hungary 10 th June, 2010 Baja, Hungary TSB No :20, 1 st January, 2007, Vác, 1679 rkm tugboat with two barges collided to a ferry, one barge’s skin ripped sinking avoided as ripped over the water-line TSB No :45, 9 th December, 2007, Dunaföldvár, 1561 rkm pushboat with eight barges collided to bridge-pier, one barge foundered sinking could be avoided by pumping Casualties can happen with radar equipped vessels too, while switching over visual navigation to radar and approaching an obstacle at the same time. … with FOG PATCHES:
4 10 th June, 2010 Baja, Hungary ( continued ) Experiences from accident investigations on the Danube by the TSB of Hungary … with WIND -channels: TSB No :4x, 2 nd January, 2010, Dunaföldvár, 1561 rkm 3-by-3 formation of barges collided to bridge-pier, formation scattered out blocking of fairway luckily avoided (in progress) (in progress) TSB No :55, 17 th May, 2010, Tass, 1586 rkm barge pontoon of a formation sunk(!) in the middle of the int’l fairway blocking of fairway avoided only by high-water (in progress) (in progress) Affect unloaded vessels (or) with big lateral surface, and/or where violent wind blows and a reach of the lowland meanders falls parallel with the wind it can intensify the current line, results in an effect, not necessarily from the direction of the wind.
5 10 th June, 2010 Baja, Hungary Σ: 1. Fog patches and wind-channels seem to be the typical weather factors affecting inland waterways 2. One casualty per year respectively and repeatedly relating to these two weather phenomena X. Consequences can be – long-period blocking of international waterway due to turning sideways or sinking – endangering water supplies of big cities by the river in case of leaking dangerous materials into water, and mostly avoided by chance... ( summarising ) Experiences from accident investigations on the Danube by the TSB of Hungary
– can be moved by light winds 6 10 th June, 2010 Baja, Hungary Shallow and occasionally moving FOG PATCHES – having distinct edges while the ambient visibility is still perfect the so called calm, slowly changing element has actually a sudden and sly feature !
7 10 th June, 2010 Baja, Hungary low-level WIND-CHANNELS of relief origin and related currents Local amplification of a bigger scale low-level air-stream due to – small, kilometre-size, some 10-metre-high horsebacks ( being more of them by the lowland reaches as well between 1590 and 1450 rkm ) – lateral cuts in a long riverside feature ( horseback or forest ) – the river’s surface itself among its bordering features A complex example in the ”Danube Triangle”: in case of strong north-westerly winds 1. westerly components cross the riverside horseback only laterally, beyond the bridge, 2. northern components intensify the current line heading to the right bank so thus both results in an anticlockwise turning force right under the bridge.
8 10 th June, 2010 Baja, Hungary (The initial problem) Weather data representative to waterways – from the NMS – only three stations right at the Danube’s bank – with not a satisfactory spatial distribution... – and only basic automats not reporting visibility neither the forecasts can focus on rivers’ local weather characteristics...
Today visibility is measured on two Mx bridges and currently planning to install onto all of them – they are on-line at the competent road engineerings, so can relay to any database th June, 2010 Baja, Hungary (Solution 1) Weather data representative to waterways – from the road meteo’ Involving other bridges for subsequent installations would result a distribution – in every 40 rkms on average – not having a gap longer than 60 – satisfactory resolution of e.g. foggy areas.
10 (Solution 2) Wind measurements representative to waterways 10 th June, 2010 Baja, Hungary Another feature of low-level wind-channels that gusts arising on the surface in the morning can be measured at 100 m height hours before therefore, measuring winds at that height has a preventive value. having a similar spatial distribution by the river as bridges. – onto high-voltage line spans
11 10 th June, 2010 Baja, Hungary (Solution 3) Weather data representative to waterways – new installations... should be considered too, since locations mentioned above do not necessarily follow the distribution of weather phenomena. The costs of one easily fits in the budget of e.g. a RIS radio relay transmitter. For surveying these features preliminary mobile monitoring measurements should be carrying out on vessels sailing the same longer passage regularly.
12 10 th June, 2010 Baja, Hungary (Solution 4) Sharing observations on a common interest base – via RIS services – skippers would readily share their own observations on hazardous weather in order to receive other vessels’ ones – dispatchers would happy as well to handle in order to be able answering meteo’ questions coming on air – skippers would readily share their own observations on hazardous weather in order to receive other vessels’ ones – dispatchers would happy as well to handle in order to be able answering meteo’ questions coming on air Involving e.g. – ferry-men, – river-police, etc. into such a movement would broadly enrich data e.g. on the existence fog.
13 10 th June, 2010 Baja, Hungary For establishing such a system, the following steps should be worked out: – a simplified observation scheme of weather phenomena hazarduos to inland waterways, which can be carried out easily by any skipper – how such data to be broadcasted among skippers via RIS, in order to avoid engaging marine radio channels and to be able to relay automatic real-time measurements as well – a skipper friendly visualisation of such data. ( continued ) Sharing observations on a common interest base – via RIS services Remarks: 1. such an operative system works in the field of aviation where weather phenomena hazardous to flights are obligatory to report in states involved in int’l aviation 2. there are working examples among amateur meteorologists on a voluntary base as well.
14 1. According to accident investigations weather can be a factor in casualties on inland waterways as well. 2. Since general meteorological networks cannot supply representative data and products initiative solutions may come from – other branches of state-owned transportation and industry by bilateral cooperation; – and/or voluntary activity of marine partners themselves on a common interest base. 3. To induce such collaborations we suggest to establish meteorological task forces, both on regional and European levels at competent organisations – for surveying local potentials – and to set international guidelines and standards on the interchange and presentation of river related weather data. 4. For future improvement investments should be done as well into sample systems and surveying measurements, preferably by RIS providers from development funds. 10 th June, 2010 Baja, Hungary CONCLUSIONS