Meghan Hodges
Noise pollution, also known as sound pollution, is caused by unwanted or excessive sound that has harmful effects on human health, wildlife, and environmental quality. The two primary types of noise are man-made and environmental. Man-made noise, caused by human activities, can include construction work, noise from automobiles, and household appliances. Environmental noise is caused by natural events such as animal sounds, thunderstorms, cyclones, and hurricanes. Noise pollution can have a range of negative effects on humans, such as hearing loss, high blood pressure, heart disease, sleep disturbances, and stress. It can also negatively impact wildlife, such as marine animals that rely on echolocation, and vulnerable organisms that rely on sound for navigation, finding food, and avoiding predators.
| Characteristics | Values |
|---|---|
| Definition | Unwanted or excessive sound that can have harmful effects on humans, wildlife, and environmental quality |
| Sources | Machines, transport, propagation systems, industrial facilities, road, rail, air traffic, construction activities, shipping, and other human activities |
| Effects on Humans | Hearing loss, high blood pressure, heart disease, sleep disturbances, stress, anxiety, mental fatigue, irritability, headaches, respiratory agitation, gastritis, colitis, type 2 diabetes, myocardial infarction, heart failure, stroke |
| Effects on Wildlife | Interference with ability to attract mates, communicate, navigate, find food, avoid predators, reproduce, survive; existential threat to vulnerable organisms |
| Prevention | Insulating homes with noise-absorbing materials, installing noise insulation in new buildings, creating pedestrian areas, replacing traditional asphalt, legislation to protect parks and natural spaces, separating residential areas from sources of noise |
| Weighted Levels | A-weighting, C-weighting, Z-weighting |
| Metrics | LAeq, LAmax, C-weighted peak sound level, time-weighted average (TWA), dose, projected dose |
| Recommended Noise Levels | Below 65 dB during the day, below 30 dB at night |
| Examples | Thunderclap (120 dB), siren (120-140 dB), power lawn mowers (90 dB), subway trains (90-115 dB), rock concerts (110-120 dB), car horn (90 dB), bus (100 dB), aircraft (130 dB), pneumatic drill (110 dB), barking dog (60-80 dB) |
Explore related products
What You'll Learn
Anthropogenic noise and marine life
Sound pollution, or noise pollution, is any unwanted or disturbing sound that affects the health and well-being of humans and other organisms. Oceans have become substantially noisier since the Industrial Revolution, with shipping, resource exploration, and infrastructure development increasing the anthrophony (sounds generated by human activity). Anthropogenic underwater noise is now recognized as a worldwide problem, with studies showing a broad range of negative effects on various marine taxa.
Marine organisms have come to rely on sound production, transmission, and reception for key aspects of their lives, such as navigating, foraging, communicating, and reproductive activities. Sound travels faster and farther in water than in air, making it the most efficient means of communication underwater. However, noise from vessels, active sonar, synthetic sounds, and acoustic deterrent devices are found to affect marine animals. These noises can compromise hearing ability and induce physiological and behavioral changes in marine animals. For example, sonar sounds can interfere with whales' ability to use echolocation, causing mass strandings and altered feeding behavior. Similarly, seismic surveys produce loud blasts of sound within the ocean that can damage the ears of marine animals and cause serious injury.
Whales and dolphins are particularly impacted by noise pollution as they rely on echolocation to communicate, navigate, feed, and find mates. Excess noise interferes with their ability to effectively echolocate. Additionally, noise from energy and construction infrastructure can also affect marine animals. While there is lower confidence that anthropogenic noise increases mortality in marine animals and the settlement of their larvae, it is still considered a stressor for them.
To address the impacts of noise on marine life, organizations like NOAA Fisheries conduct research and develop strategies. They use passive acoustic techniques to monitor marine mammals and human-made noise in the environment, helping establish baseline information for managing marine resources. Other initiatives include the Ocean Noise Strategy Roadmap, which aims for a comprehensive understanding of ocean noise impacts on marine life, and the International Workshop on Soundscape Mapping, which focuses on managing anthropogenic noise and its effects on cetaceans.
Noise pollution also extends beyond the marine realm, affecting both humans and wildlife on land. In urban environments, sources of noise pollution include transportation, construction, lawn care, electrical generators, wind turbines, explosions, and people. Research indicates that noise pollution disproportionately affects low-income and racial minority neighborhoods in the United States. Additionally, noise from aircraft flying over cities can have a greater impact than road traffic, with a single aircraft producing 130 dB. Noise pollution can lead to various health issues, including hearing loss, high blood pressure, heart disease, sleep disturbances, stress, and even cardiac problems in the elderly. It can also negatively impact individuals with Autism Spectrum Disorder (ASD), causing unpleasant emotions and physical sensations in noisy environments.
Ozone Pollution: Is the US Leading or Lagging?
You may want to see also
Explore related products
Urban planning and noise pollution
Noise pollution, also referred to as sound pollution, is defined by the harmful effects it has on humans and animals. Sources of noise pollution include machines, transport, and propagation systems. Poor urban planning can also contribute to noise pollution. For example, industrial and residential buildings that are in close proximity can result in noise pollution in residential areas. Common sources of noise in these areas include loud music, transportation, lawn care maintenance, construction, electrical generators, wind turbines, explosions, and people.
Urban planning can play a crucial role in mitigating noise pollution. China's "Urban Planning Compilation Measures" published in 2005, identified urban planning as a vital tool for managing spatial resources, with a focus on addressing traffic noise. The shape of buildings, street orientations, the positioning of parks, and the construction of earth embankments can all be factors in reducing noise levels for citizens.
To optimize urban planning for noise reduction, various strategies can be employed. These include the use of acoustic simulations and spatial statistics to evaluate and compare the impact of planning variables on noise levels. This allows for the identification of roads that require interventions to reduce future noise exposure for residents. Additionally, new technologies can be leveraged to simulate actions in the road network and built environment, further reducing noise pollution.
Urban planning can also contribute to noise prevention by implementing regulations and policies. This includes establishing mandatory separation between residential zones and sources of noise, such as airports, and enforcing fines for exceeding noise limits. Governments can also promote the use of noise insulation in new buildings, create pedestrian-only areas, and explore alternatives to traditional asphalt that can reduce traffic noise.
The impact of noise pollution on mental health is an important consideration for urban planners. Studies have shown that noise exposure during different times of the day, in various locations, and while engaging in specific activities can have varying effects on mental health. By understanding these thresholds, urban planners can develop more precise noise control standards and formulate effective policies to protect the well-being of residents.
The Ganges' Polluting Culprits: Factories Revealed
You may want to see also
Explore related products
Effects on human health
Noise pollution, also called "environmental noise", is any unwanted or disturbing sound that affects the health and well-being of humans and other organisms. According to the World Health Organization (WHO), noise above 65 decibels (dB) is considered noise pollution, and it becomes harmful when it exceeds 75 dB. Noise above 45 dB can prevent people from falling asleep or sleeping properly.
Noise pollution has been deemed "a growing danger to the health and welfare of the Nation's population" by US agencies such as the EPA. The European Environmental Agency reports that noise ranks second only to air pollution as the most harmful environmental exposure to public health. The WHO estimates that environmental noise features among the top environmental risks to health, with approximately 1 million healthy years of life lost annually from its effects.
Noise pollution can cause a range of health issues for humans, including:
- Hearing loss: Exposure to high decibels of sound can lead to permanent hearing loss, with approximately 10 million people in the US suffering from noise-induced hearing loss.
- Cardiovascular issues: Noise pollution has been linked to high blood pressure, heart disease, and ischaemic heart disease. It can also contribute to cardiovascular disease.
- Sleep disturbances: Unwanted or loud noises can interrupt sleep, reducing the depth and quality of rest and affecting people's moods and ability to concentrate.
- Stress and mental health: Continued exposure to noise pollution can trigger anxiety, stress, irritability, and frustration. It can also lead to more severe mental health issues and cognitive problems.
- Physical health: Loud sounds can directly cause hearing impairment and, in some cases, tinnitus and hypersensitivity to sound.
- Productivity: Noise may affect people's ability to focus, leading to low performance over time.
Noise pollution is particularly harmful in cities, where traffic noise is the most polluting sound. Certain groups, such as those in neighbourhoods with low socioeconomic status, may be disproportionately affected by noise pollution and may have limited options for reducing their exposure.
What is N2O? Primary or Secondary Pollutant?
You may want to see also
Explore related products
Sound pressure levels
Sound pressure level (SPL) is a measure of the effective pressure of a sound relative to a reference value. It is commonly used in acoustics and is expressed in decibels (dB). The commonly used reference sound pressure in air is 20 micropascals, which is often considered the threshold of human hearing. The lower limit of audibility is defined as a sound pressure level SPL of 0 dB. The normal human ear can detect sounds that range between 0 dB (hearing threshold) and about 140 dB, with sounds between 120 dB and 140 dB causing pain.
Sound pressure level is used in various applications, including environmental noise monitoring, occupational noise monitoring, audio engineering and production, product testing, and research and scientific studies. In environmental noise monitoring, SPL is used to measure and monitor noise levels in the environment, such as noise pollution in urban areas, industrial noise, and transportation noise. This information can be used by governments to implement measures to reduce noise pollution, such as protecting certain areas from noise, establishing regulations, and installing noise insulation in new buildings.
Occupational noise monitoring involves using SPL to measure noise levels in the workplace to protect workers from hearing damage and ensure compliance with health and safety regulations. In audio engineering and production, SPL is used to monitor sound levels in recording studios, concert halls, and other places where audio is made to maintain optimal sound quality and volume. Product testing involves using SPL to test the sound output of products such as speakers and headphones.
Research and scientific studies utilize SPL to measure and analyze sound levels in various contexts, such as studying animal communication, the effects of noise pollution on wildlife, and the impact of different frequencies of sound on the human ear. Understanding sound pressure levels is crucial for assessing measurements of noise pollution and its potential health impacts. For example, exposure to sound pressure levels above 85 dB for prolonged periods can cause hearing damage, while levels above 120 dB can result in immediate and permanent hearing loss.
Sound pressure is the local deviation from the ambient air pressure caused by a sound wave. It is typically measured using a microphone in the air and a hydrophone in water. The SI unit of sound pressure is the pascal (Pa). Sound intensity, which is influenced by both sound pressure and particle velocity, is measured in W·m−2 in SI units.
Purifying Polluted Oxygen in Oxygen Not Included
You may want to see also
Explore related products
Negative impacts on wildlife
Noise pollution, also known as sound pollution, is the propagation of noise or sound with potentially harmful effects on humans and animals. It is considered any unwanted or disturbing sound that affects the health and well-being of humans and other organisms. Sound levels during peak periods in a high-air-traffic corridor, such as Yellowstone's backcountry, can be elevated by up to 5 decibels, resulting in a significant reduction in the area where predators can hear their prey.
Noise pollution has negative impacts on wildlife, both on land and in the sea. It can cause hearing loss, stress, and high blood pressure in animals, similar to the effects on humans. Studies have shown that loud noises can cause caterpillars' dorsal vessels (the insect equivalent of a heart) to beat faster, and bluebirds to have fewer chicks. Animals use sound for various reasons, including navigating, finding food, attracting mates, and avoiding predators. Noise pollution disrupts these essential activities, affecting their ability to survive and causing behavioural changes.
Marine life is particularly vulnerable to noise pollution. Whales and dolphins rely on echolocation to communicate, navigate, feed, and find mates. Excess noise from ships, oil drills, sonar devices, and seismic tests interferes with their ability to echolocate effectively. Sonar sounds can be as loud as 235 decibels and travel for hundreds of miles underwater, contributing to mass strandings of whales and altering the feeding behaviour of endangered blue whales.
Additionally, noise pollution can disturb the natural sound environment of coral reefs, where marine organisms use sound for navigation, communication, and reproductive activities. Research has shown that male frogs adapt to traffic noise by calling at a higher pitch, which may be problematic for female frogs as they prefer lower-pitched calls, indicating larger and more experienced males. Human-caused noise has led to similar changes in multiple bird species, squirrels, primates, bats, and cetaceans.
Noise pollution from transportation, industry, and urban development can also impact wildlife in protected areas and natural habitats. It can reduce the area in which animals can effectively listen for prey or mates, forcing them to adapt to increasing noise levels. Overall, noise pollution is a growing concern for the health and survival of wildlife, with potential long-term effects on ecosystems and biodiversity.
Great Lakes Pollution: Understanding the Devastating Impact
You may want to see also
Frequently asked questions
Sound pollution, or noise pollution, is any unwanted or disturbing sound that affects the health and well-being of humans and other organisms.
Sound pollution can be categorised into two primary types: man-made noise and environmental noise. Man-made noise includes construction work, noise from automobiles, and household appliances. Environmental noise includes the sound produced by animals, thunderstorms, cyclones, and hurricanes.
Some examples of man-made sound pollution include traffic noise, loud music, transportation (aircraft, rail, etc.), lawn care maintenance, construction, electrical generators, wind turbines, and explosions.
Sound pollution can cause hearing loss, stress, high blood pressure, heart disease, sleep disturbances, mental fatigue, and interference with communication and recreation. It can also lead to psychological effects such as annoyance, anxiety, depression, and aggressive behaviour.
Sound pollution can interfere with animals' ability to navigate, find food, attract mates, and avoid predators. It can also cause stress and alter behaviour in wildlife. In the case of marine animals, sound pollution interferes with echolocation, which is crucial for communication, navigation, and feeding.
