Underwater Noise Identifying the Problem Although the worlds oceans - - PowerPoint PPT Presentation
Underwater Noise Identifying the Problem Although the worlds oceans - - PowerPoint PPT Presentation
Underwater Noise Identifying the Problem Although the worlds oceans play a dominant role in the planets ecosystem, they are possibly the least understood natural habitats. Hans-Uwe, D., & Jiang-Shiou, H. (n.d.). PERSPECTIVES OF
Identifying the Problem
Although the world’s oceans play a dominant role in the planet’s ecosystem, they are possibly the least understood natural habitats.
Hans-Uwe, D., & Jiang-Shiou, H. (n.d.). PERSPECTIVES OF UNDERWATER OPTICS IN BIOLOGICAL OCEANOGRAPHY AND PLANKTON ECOLOGY STUDIES. Retrieved 2010, from https://www.researchgate.net/profjle/Hans_Uwe_Dahms/publication/228623429_ Perspectives_of_underwater_optics_in_biological_oceanography_and_plankton_ecology_ studies/links/55b8651608aec0e5f4398d0d.pdf
Human activities introduce sound into the environment either incidentally (by-product of their activities e.g., shipping, construction, fjshing, windfarms) or intentionally for a particular purpose (e.g., sonars for bottom imaging, mapping and detection
- f objects or active seismic sources, such as airguns, for deep sub-
bottom imaging of geological structures).
“Researchers saw a complete absence of life around the air gun,”
- Mr Michael Jasny, director of marine mammal protection for the
Natural Resources Defense Council
“Researchers saw a complete absence of life around the air gun,”
- Mr Michael Jasny, director of marine mammal protection for the
Natural Resources Defense Council
“It’s ripping the communications system apart,” “And every aspect of their lives is dependent on sound, including fjnding food.”
- Mr Clark, who has listened to whales near Ireland from coastal Virginia
Why Underwater Noise?
Sound is a dominant feature of the underwater marine environment as a result of natural (biological sources, underwater earthquakes, wind) and human-made (anthropogenic) sound sources (Richardson et al. 1995; NRC 2003; Popper and Hastings 2009a,b) Marine mammals are especially at the forefront of the issues surrounding noise pollution in the ocean, as it is revealed often that many stranded and beached animals suffer from symptoms such as burst eardrums and internal bleeding. However, there is marine life that suffers in silence, and a recent study aims to reveal the damage that noise causes to the tiniest of marine life: plankton
- Awesome Ocean
We rely on sight on our daily life, while marine creatures mostly rely on sound as their main communication tool.
What is happening?
The amount of variety of anthropogenic noises has risen signifjcantly during the last few decades in both the open ocean and the highly- populated coastal areas due to increasing human activities . (Jones, 2019) In 2017, researchers reported that seismic-survey blasts could scythe through the water and kill zooplankton more than one kilometre away; the acoustic beam dispatches them “like mowing the lawn” (Jones, 2019)
Jones, N. (2019, April 10). Ocean uproar: Saving marine life from a barrage of noise. Retrieved September 10, 2020, from https://www.nature.com/articles/d41586-019-01098-6
Mr Christopher Clark, who has studied whale communication for 40 years, described the noise as a “living hell” for undersea life, which is exquisitely tuned to sound.
Mr Christopher Clark, a senior researcher in the bioacoustics program at the Cornell Lab of Ornithology
What is happening?
In the past, it has been assumed that planktons were safe from the effects of noise pollution as they were too small to refmect sound waves, but recent studies have suggested otherwise. For example, a team of researchers conducted a survey, before and after a seismic survey, on the population of zooplankton off the southeast coast of Tasmania. They found a 64% drop in zooplankton numbers just
- ne hour after the seissmic survey.
https://blogs.unimelb.edu.au/sciencecommunication/2017/09/20/ an-invisible-threat-to-an-invisible-victim-how-sound-is-affecting- zooplankton/
What is happening?
The widespread use of air guns in underwater seismic surveys could be dramatically reducing populations of the microscopic animals at the base of the marine food chain. Plankton are vital for the health of ocean ecosystems, but their sensitivity to human-made noise is not well understood. Robert McCauley at Curtin University in Perth, Australia, and his team decided to investigate the effects of air- gun signals, similar to those used for the detection of oil reserves, in a bay in
- Tasmania. They towed nets through the water before and after fjring an air gun,
and found that the abundance of collected zooplankton fell by more than 60% within an hour of the noise impulse, and that the number of dead animals more than doubled. Sonar measurements suggest that zooplankton abundance dropped more than a kilometre away from the source of the gun shot. Nature Ecol. Evol. (2017)
Sound behaves differently underwater than in air
Because water is denser than air, sound travels 4x faster and farther in the ocean. Its speed and distance depends on the density of the water (determined by its temperature, salinity, and depth) and the frequency of the sound, measured in hertz (Hz). Some sounds, particularly low-frequency ones, can cover vast distances, even across ocean basins. Characteristic of sound in the sea: The small amount of sound, or energy, has the ability to travel through great distances without disappearing signifjcantly.
Concept 1 Concept 2
Fast forward in time. Time remap backwards. The idea is to have the artistic approach by visualising and illustrating the outcome of the marine life (consequences) based on the research. The purpose is to let the audiences come to a realisation that what could happen if we don’t protect our current marine life habitat.
- Progression. To illustration and animate the noise
pollution create by human activities entering to the marine environment which affects the marine
- habitat. How different marine creatures / organism
will react differently and the ultimate outcomes. Showcasing the domino effect where the whole marine world will be intensifjed. Idea is to educate / create awareness through sharing the stories / suffering of individual marine creatures / organism as different group of marine species react differently.
Case Study 1 Noise Aquarium Artist: Victoria Vesna
An immersive installation that includes 3D animation and
- interactivity. It connects the audience to the diversity and beauty
- f the micro-creatures and by creating the noise and destruction
- f eco-system with our presence. We are asked to rethink our
approach to living on this planet. Microscopic organisms often go unnoticed because they are nearly invisible. However, they have a critical impact on many
- ecosystems. Noise Aquarium shows tiny plankton creatures
- n big screens around the world to create awareness of these
essential life forms and the threats they might face. In order to establish a connection to the reality of the actual organisms, they decided to use tomographic scans of actual plankton and use them in computer animation. The work process developed for this procedure enables them to present real living organisms as linear computer animations as well as in various interactive settings.
Case Study 2 The Aquatocene – Subaquatic Quest for Serenity Artist: Robertina
Explore themes such as interspecies communication, underwater sound pollution, the possible coexistence
- f animals and machines, chemical processes, the
- rigin of life, etc.
The audio compositions of Aquatocene / The subaquatic quest for serenit encourage us to refmect upon the anthropogenic sonic impact on the underwater habitat and marine life, as well as illuminate awareness and underscore the importance
- f maintaining safe sound environments for animals
living in the world’s oceans, seas, lakes and rivers. Over the last few years the artist had made a number
- f recordings using hydrophones in different locations
around the globe. Underwater noise effects a great number of marine life forms which depend on the sub-aquatic sonic environment to survive. Despite the broad availability of popular aquatic sounds, we aren’t really aware that the underwater soundscape is as rich as the one heard by terrestrial creatures above
- water. Aside from lacking experience in terms of the
fascinating diversity of marine sound, we are also not aware that sonic pollution caused by humans is already changing the soundscape of the waters and even the communication of its inhabitants.
Case Study 3 The Art of Listening Under Water Artist: Jana Winderen
“The Art of Listening: Under Water.” The installation provides visitors with a unique opportunity to listen closely to the ocean’s inhabitants and to refmect upon the ways in which human activity interferes with underwater life. Winderen has a background in mathematics, chemistry, and fjsh ecology, and her practice explores audio and environments that are diffjcult for humans to access on their own—whether aurally or physically. By looking at the way sound travels through various materials (like soil, stone, wood, and water), she began considering how natural noise from varying environs are affected by the interruption of human activity. From this, Winderen began creating multichannel auditory installations, and even concerts, which have been presented internationally, throughout America, Asia, and Europe. “When I make recordings in the environment, I record the whole ecosystem with the animals in it. When I am installing the sound piece, I work with the space as it is and not against it,” said Winderen. For the Miami project with Audemars Piguet, Winderen visited Miami, where she created recordings from across the city with the use of ultra-sensitive tools like hydrophones and an ultrasound
- detector. By using as her point of departure the sounds of the