scholarly journals Wildlife at Airports

2017 ◽  
Author(s):  
Travis L. DeVault ◽  
Bradley F. Blackwell ◽  
Jerrold L. Belant ◽  
Michael J. Begier
Keyword(s):  
Ground Level ◽  
Civil Aviation ◽  
Aviation Industry ◽  
Above Ground Level ◽  
Tools And Techniques ◽  
Developed World ◽  
The U.S

Collisions between aircraft and wildlife (wildlife strikes) are common occurrences across the developed world. Wildlife strikes are not only numerous, but also costly. Estimates suggest that wildlife strikes cost the civil aviation industry in the U.S. up to $625 million annually, and nearly 500 people have been killed in wildlife strikes worldwide. Most wildlife strikes occur in the airport environment: 72 percent of all strikes occur when the aircraft is ≤500 ft (152 m) above ground level, and 41 percent of strikes occur when the aircraft is on the ground during landing or takeoff. Thus, management efforts to reduce wildlife hazards are focused at the airport. There are many techniques used to reduce wildlife hazards at airports, and these usually work best when used in an integrative fashion. Here, we discuss the available data on wildlife strikes with aircraft, summarize legal considerations, explain why wildlife are attracted to airports and how to identify important wildlife attractants, describe commonly-used tools and techniques for reducing wildlife hazards at airports, and explain how airports can enlist the help of professional wildlife biologists to manage wildlife hazards.

A direct method for determining the altitude variation of the uranium stripping ratio in airborne gamma‐ray surveys

Geophysics ◽  
1989 ◽  
Vol 54 (10) ◽  
pp. 1350-1353 ◽  
Author(s):  
S. S. Raghuwanshi ◽  
B. K. Bhaumik ◽  
S. G. Tewari
Keyword(s):  
Potassium Channels ◽  
Gamma Rays ◽  
Gamma Ray ◽  
Direct Method ◽  
Ground Level ◽  
Above Ground Level ◽  
Ground Clearance ◽  
Detector Distance ◽  
A Direct Method ◽  
The U.S

In airborne gamma‐ray spectrometric surveys, it is essential to calculate the net counts in the thorium, uranium, and potassium channels for quantitative analysis. The net uranium, thorium, and potassium counts are given by [Formula: see text], (1a) [Formula: see text] (1b) and [Formula: see text], (1c) where [Formula: see text], [Formula: see text], and [Formula: see text] are the background corrected counts per second for uranium, thorium, and potassium channels, respectively; α and β are the Compton contributions of thorium gamma rays in the uranium and potassium windows, respectively; and γ is the contribution of uranium gamma rays in the potassium window. In some countries, such as the U.S., Canada, and India, it is common practice to compute the stripping ratios by taking measurements over a set of calibration pads with known and varying amounts of uranium, thorium, and potassium (Grasty and Darnley, 1971; Grasty, 1975; Lovborg, 1984). These factors are determined by keeping the detector system inside the survey aircraft over the calibration pads. The stripping coefficients do not have fixed values but vary with source‐detector distance. Because most airborne surveys are conducted at about 120 m above ground level, the stripping ratios measured over the pads should be corrected for variations with ground clearance. In practice, the ground clearance in airborne gamma‐ray surveys may vary from about 40 m to 200 m depending upon the topography of the area flown. It is, therefore, necessary to know the values of the stripping coefficients as a function of ground clearance at least within the range of investigations. If this is known, it is possible to apply proper corrections while converting all data to a uniform datum of 122 m.

scholarly journals Impact of COVID -19 on Pilot Proficiency – A Risk Analysis

2021 ◽  
Vol 6 (3) ◽  
pp. 001-013
Author(s):  
Rajee Olaganathan ◽  
Roli Angelo H Amihan
Keyword(s):  
Research Study ◽  
Aviation Safety ◽  
Air Traffic ◽  
Asia Pacific ◽  
Civil Aviation ◽  
Aviation Industry ◽  
Flight Operations ◽  
Incident Reports ◽  
The Impact ◽  
The U.S

Pilot proficiency is essential in the aviation industry to maintain a safety record for successfully operating airlines. The current COVID-19 scenario has made it practically difficult for pilots to achieve the federal requirements stated in Title 14 CFR 121.439 (a) and 14 CFR 61.57 (a) (1). It has placed a burden on pilots to maintain their currency and proficiency related to cost and lack of aircraft access due to furloughs and lay-offs. The purpose of the first part of this study was to assess the impact of COVID-19 on global air traffic based on the data collected from the International Civil Aviation Organization (ICAO) and the U.S. Bureau of Transportation Statistics (BTS). The second part of this research study aims to assess the pilot’s proficiency before and after COVID-19 was officially declared as pandemic to identify any threats to aviation safety based on the incident reports submitted in the Aviation Safety Reporting System. The findings show that the highest reduction in flight operations was observed during May 2020 with -70.67 % compared with May 2019 at the global level. Middle East region witnessed a -57.35 % reduction in flight operations. Based on the number of flights operated in the year 2020, the Asia-Pacific region was the most affected region with 4,913,303 fewer flights than in the year 2019. For the U.S. domestic air traffic, a severe impact occurred in May 2020 with a -70.88 % reduction and 532,834 fewer flights than in May 2019 which was similar to the global air traffic trend. The number of incident reports filed by pilots regarding proficiency-related to COVID-19 issues in the ASRS data analysis increased by 1000% during this pandemic period. The results and recommendations of this research study will provide valuable information to the aviation industry that can aid in developing mitigation measures to decrease future aviation accidents related to pilot proficiency.

Importance of Personal Data Protection Law for Commercial Air Transport

2017 ◽  
Vol 2017 (1) ◽  
pp. 35-44
Author(s):  
Dawid Zadura
Keyword(s):  
Data Protection ◽  
Public Information ◽  
Personal Data ◽  
Air Transport ◽  
Civil Aviation ◽  
Aviation Industry ◽  
Personal Data Protection ◽  
It Systems ◽  
Data Protection Law ◽  
The Law

Abstract In the review below the author presents a general overview of the selected contemporary legal issues related to the present growth of the aviation industry and the development of aviation technologies. The review is focused on the questions at the intersection of aviation law and personal data protection law. Massive processing of passenger data (Passenger Name Record, PNR) in IT systems is a daily activity for the contemporary aviation industry. Simultaneously, since the mid- 1990s we can observe the rapid growth of personal data protection law as a very new branch of the law. The importance of this new branch of the law for the aviation industry is however still questionable and unclear. This article includes the summary of the author’s own research conducted between 2011 and 2017, in particular his audits in LOT Polish Airlines (June 2011-April 2013) and Lublin Airport (July - September 2013) and the author’s analyses of public information shared by International Civil Aviation Organization (ICAO), International Air Transport Association (IATA), Association of European Airlines (AEA), Civil Aviation Authority (ULC) and (GIODO). The purpose of the author’s research was to determine the applicability of the implementation of technical and organizational measures established by personal data protection law in aviation industry entities.

Ghana ThinkTank

Transfers ◽  
2016 ◽  
Vol 6 (1) ◽  
pp. 115-121
Author(s):  
Christopher Robbins ◽  
Maria del Carmen Montoya ◽  
John Ewing
Keyword(s):  
El Salvador ◽  
Prison System ◽  
Think Tanks ◽  
Developed World ◽  
First World ◽  
The U.S

Ghana ThinkTank has been “Developing the First World” since 2006. We collect problems in the so-called developed world, and send them to think tanks we established in Cuba, Ghana, Iran, Mexico, El Salvador, and the U.S. prison system to analyze and solve. Our network continues to grow . . .

scholarly journals Spatial Analysis (Measurements at Heights of 10 m and 20 m above Ground Level) of the Concentrations of Particulate Matter (PM10, PM2.5, and PM1.0) and Gaseous Pollutants (H2S) on the University Campus: A Case Study

Atmosphere ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 62
Author(s):  
Robert Cichowicz ◽  
Maciej Dobrzański
Keyword(s):  
Spatial Distribution ◽  
Hydrogen Sulfide ◽  
Particulate Matter ◽  
Air Quality ◽  
Spatial Analysis ◽  
Ground Level ◽  
Leeward Side ◽  
High Concentration ◽  
Above Ground Level ◽  
High Concentrations

Spatial analysis of the distribution of particulate matter PM10, PM2.5, PM1.0, and hydrogen sulfide (H2S) gas pollution was performed in the area around a university library building. The reasons for the subject matter were reports related to the perceptible odor characteristic of hydrogen sulfide and a general poor assessment of air quality by employees and students. Due to the area of analysis, it was decided to perform measurements at two heights, 10 m and 20 m above ground level, using measuring equipment attached to a DJI Matrice 600 unmanned aerial vehicle (UAV). The aim of the measurements was air quality assessment and investigate the convergence of the theory of air flow around the building with the spatial distribution of air pollutants. Considerable differences of up to 63% were observed in the concentrations of pollutants measured around the building, especially between opposite sides, depending on the direction of the wind. To explain these differences, the theory of aerodynamics was applied to visualize the probable airflow in the direction of the wind. A strong convergence was observed between the aerodynamic model and the spatial distribution of pollutants. This was evidenced by the high concentrations of dust in the areas of strong turbulence at the edges of the building and on the leeward side. The accumulation of pollutants was also clearly noticeable in these locations. A high concentration of H2S was recorded around the library building on the side of the car park. On the other hand, the air turbulence around the building dispersed the gas pollution, causing the concentration of H2S to drop on the leeward side. It was confirmed that in some analyzed areas the permissible concentration of H2S was exceeded.

scholarly journals A Climatology of Nocturnal Low-Level Jets at Cabauw

2009 ◽  
Vol 48 (8) ◽  
pp. 1627-1642 ◽  
Author(s):  
P. Baas ◽  
F. C. Bosveld ◽  
H. Klein Baltink ◽  
A. A. M. Holtslag
Keyword(s):  
Wind Speed ◽  
Ground Level ◽  
Geostrophic Wind ◽  
Stable Stratification ◽  
Radiative Cooling ◽  
Inertial Oscillation ◽  
Stable Boundary Layers ◽  
Above Ground Level ◽  
Low Level ◽  
Low Level Jets

Abstract A climatology of nocturnal low-level jets (LLJs) is presented for the topographically flat measurement site at Cabauw, the Netherlands. LLJ characteristics are derived from a 7-yr half-hourly database of wind speed profiles, obtained from the 200-m mast and a wind profiler. Many LLJs at Cabauw originate from an inertial oscillation, which develops after sunset in a layer decoupled from the surface by stable stratification. The data are classified to different types of stable boundary layers by using the geostrophic wind speed and the isothermal net radiative cooling as classification parameters. For each of these classes, LLJ characteristics like frequency of occurrence, height above ground level, and the turning of the wind vector across the boundary layer are determined. It is found that LLJs occur in about 20% of the nights, are typically situated at 140–260 m above ground level, and have a speed of 6–10 m s−1. Development of a substantial LLJ is most likely to occur for moderate geostrophic forcing and a high radiative cooling. A comparison with the 40-yr ECMWF Re-Analysis (ERA-40) is added to illustrate how the results can be used to evaluate the performance of atmospheric models.

Commercial Aviation, A New Era: summary of the 2017 TQA workshop

2021 ◽  
Vol 263 (3) ◽  
pp. 3896-3899
Author(s):  
gregg fleming
Keyword(s):  
Environmentally Friendly ◽  
Federal Aviation Administration ◽  
Global Leadership ◽  
Aviation Industry ◽  
Engineering Technology ◽  
Commercial Aviation ◽  
New Era ◽  
Government Organizations ◽  
Aircraft Engineering ◽  
The U.S

More environmentally friendly aircraft designs, particularly with regard to noise, was a Technology for a Quieter America (TQA) workshop hosted by the National Academy of Engineering (NAE) held in May 2017. This workshop titled "Commercial Aviation: A New Era", centered on the importance of commercial aviation to the U.S. economy, and what it will take for the U.S. to maintain global leadership in the aviation sector, including a forward-looking topic on more environmentally friendly aircraft designs. A principal focus of the workshop was the necessary step-changes in aircraft engineering technology that must be addressed with the development and testing of flight demonstrators together with significantly increased funding of public-private partnerships. Government agencies which participated included NASA, the Federal Aviation Administration, and the Department of Housing and Urban Development (HUD). There was also substantial participation from the aviation industry, airports, airlines, non-government organizations and academia.

Earthquake in Papua New Guinea Results in New Concept for Securing Pipelines in Ridgeline Right-of-Way: The Micropile Contiguous Wall

2020 ◽  
Author(s):  
Christoph Ladenhauf ◽  
Frank Remmert ◽  
Christoph Prager ◽  
Rhyssheffer Birthwright ◽  
Daniel Cushing
Keyword(s):  
Ground Level ◽  
Climatic Conditions ◽  
Alpine Region ◽  
Third Party ◽  
Slope Stabilization ◽  
Earthquake Loads ◽  
Right Of Way ◽  
Safety Considerations ◽  
Tools And Techniques ◽  
Wall System

Abstract On February 25 (UTC), 2018, the project, a combine of wellpads, gathering lines, transport pipelines and its facilities, sustained a Mw7.5 earthquake, and ca. 300 aftershocks, epicentered directly under the key facilities. Around 150 km of high-pressure gas and condensate pipelines were affected. A number of design and construction decisions protected the pipelines, and prevented serious damage. However, the earthquake disturbed several sections of the pipeline Right-of-Way (ROW), which subsequently required intervention and stabilization. The challenges associated with re-occupying the remotely-situated, mountainous and disturbed ROW, and safely installing stabilization structures, led to the development of a new pipeline stabilization concept: the contiguous Micropile-Wall system. The concept, leveraging tools and techniques from the tunneling industry, and practices from the Alpine region, consists of 139.7 mm micro piles, installed in 3 m joints, in rows along either side of the pipeline. Once installed, opposing rows of these micropiles are attached to each other at ground level with steel tendons. This new concept can be installed using light equipment with minimal vibration and ground disturbance. It is designed to sustain significant earthquake loads, does not retain groundwater, and is resistant to corrosion and third-party damage. This concept was developed and selected in order to repair parts of the damaged ROW and ensure pipe integrity. Future deterioration of the adjacent slopes was taken into account, but slope stabilization for several dozens of landslides was not looked into, as this would have been too large an effort considering the remoteness of the terrain, climatic conditions, safety considerations and other constraints.

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