Environmentalists say navy sonar hurts whales, but ignore impacts of offshore wind farms Paul Driessen and Mark Duchamp Between January 9 and February 4 this year, 29 sperm whales got stranded and …
The harmonics of Big Wind Horizontal Axis Wind Turbines HAWTs are well known and will radiate through the fixed mount structures of Europe’s offshore installations of Big MW Wind which rigidly mount the sea floor.
There is no question the frequencies emitted from these Big Wind HAWT mount structures are present and will disrupt and disorient the sonar communication of any whale, and as the article points out may even cause inner ear damage which will affect their navigation ability, leading to their beaching and deaths.
The Guardian in the UK has it wrong regarding these whale deaths in the English Channel and North Sea. The oceanic environmentalists and scientists need to take action right now and offer to work with Big Wind and Federal Governments to solve this problem.
Fortunately, there is a simple way to seriously reduce harmonic emissions into the water from fixed mount HAWTS, and that is to convert these Big Wind Turbines to Low Mount Vertical Axis Wind Turbines VAWTs which are tethered on floating platforms, even in near shore applications, which will dramatically reduce the amount of vibration which travels through the water, a low cost environmentally safe solution which for now, Big Wind developers chose to ignore as do the governments which regulate them to maintain current profit and job levels in this down economy.
For new projects not yet constructed, the environmentally safe way forward for Big and Small Wind offshore and near shore is to change the deployment model to Low Mount Wind Turbines of the VAWT type, mounted on floating platforms. Such low mount floating platform VAWTs will not cost any more because these low mount wind turbines are designed to operate in semi-turbulent winds with higher solidity designs. Better yet such low mount VAWTs can be universally mounted near shore in smaller sizes but in larger numbers with much lower mount and transmission costs, and much lower operating and maintenance O&M costs (being nearer to shore and at boat level, so no expensive aerial maintenance when using tilt mounts), and best of all these Low Mount VAWTS have much better power output per hectare of space, because the trailing wake characteristics of Low Mount VAWTs on floating platforms require only 4 to 5 working diameter spacing versus high Mount HAWTS which require much larger 12-17 diameter spacing to work efficiently (around 30-35% of Name Plate “NP”) and profitably.