Introduction

Wyckoff, H. O.; Allisy, A.; Fränz, H.; Jennings, W. A.; Kellerer, A. M.; Lidén, K.; Rossi, H. H.

doi:10.1093/jicru/os17.2.1

Cited by 2 publications

(5 citation statements)

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“…The (13) plotted for dose option ICRP-103 in Figure 4 was the main goal of this work, because it can be very useful for health concerned pilots and passengers. However we did an additional analysis, returning to the amazing result E OMAA-KLAX 430 (t) = (8.1587 µSv/h) • t, we generalize the procedure and take the transformation 13 for all the simulated data and we could be able to obtain dE/dt = f (z) for all routes, where z represents the alitude in units of FL.…”

Section: Resultsmentioning

confidence: 99%

“…Analyzing in depth the simulation data for one flight in each route at every altitude z Figure 3, we could derive (13). Applying this for all the simulated data we get numerical tables for the EARDR dE/dt as function of altitude z in the range 20000 ft to 50000 ft. By requiring reduced chi squared minimum and doing the fits according to functions ( 14), ( 15), ( 16), ( 17) and ( 18), we could find the cosmic aeroradiation polynomials displayed in Table 7 and plotted in Figure 5 We did a ranking with the aerial flight routes according to their irradiation rates, the first four of this ranking have in common that all start from middle east and arrive at Los Angeles passing over the true north pole of the Earth.…”

Section: Discussionmentioning

confidence: 99%

“…The calibration for w R , w T , and Q are in such a way that deaths by a long time risk radiation exposure should not be higher than 3% in 10 years. The International Commission on Radiological Protection, ICRP [4], [6], had defined the radiation assessment quantities based on a human phantom reference called the ICRU sphere, with diameter of 30 cm, density of 1 g/cm 3 , made by oxygen 76.2%, carbon 11.1%, hydrogen 10.1%, and nitrogen 2.6% [13], [14]. The ambient equivalent radiation dose, H * (10), indicates the absorbed radiation dose of the radiation field aligned radially onto the ICRU sphere with a penetration distance of 10 mm.…”

Section: Statistical Weightsmentioning

confidence: 99%

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Radiation Dose Charts for Long Geodetic and Polar Flights with CARI-7A

Quiñonez,

Núñez,

Casallas

et al. 2018

Preprint

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We have calculated by using CARI-7A the effective and ambient radiation doses absorbed by a reference human phantom inside aircrafts with cruise speed, and averaged ascent/descent rates as presented by real airplanes such as: Airbus 380, Boeing 777, 787, Hercules C-130 and Twin Otter DHC-6, in a sample of flight aerial routes. The sample is composed of sixteen flight aerial routes and two special cases of one route. From the routes sample fifteen are between the longest non-stop flight routes around the world, where four flights pass over the Arctic and we have considered one air route involving the Antarctica with two additional special cases. The Earth curvature was taking into account for points in the constructed flight routes, by using the INVERSE3D software, which is based on the model WGS84. We also have constructed radiation dose charts according to the ICRP-103, by using the radiometric results for one flight in each flight aerial route coming from CARI-7A simulations. These charts present the effective absorbed radiation dose as a function of the flight level and the flight time in a year of normal operations of the crew as recommended by FAA. We have characterized geographically and kinematically the cosmic effective radiation absorption rates at Earth atmosphere in terms of the structure and order of polynomials in the altitude. We discuss about the threshold values for absorption of radiation, the flight hours per year, and the model of statistical radiation and tissue weights established by the ICRP-103 and its relation with the radiation charts for aviation shown in this work. From the flight with the leading rate of irradiation we found a thumb rule to estimate the effective absorbed radiation dose and the ambient equivalent dose that gives a superior threshold for any flight of the sample and perhaps on Earth, valid in interval [20000, 50000] ft.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Statistical Weightsmentioning

confidence: 99%

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Radiation Dose Charts for Long Geodetic and Polar Flights with CARI-7A

Quiñonez,

Núñez,

Casallas

et al. 2018

Preprint

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show abstract

“…As discussed in earlier chapters, the primary contribution involves adding a considerable amount of information to the existing body of information about the Calf Creek horizon. This important horizon (Thurmond and Wyckoff 1999) has been defined across most of Oklahoma (Wyckoff 1994(Wyckoff , 1995, areas of Texas where Plains-type grassland habitats were present during this period (Collins 1995), and parts of Kansas and Missouri. Within Texas, Calf Creek-period point types include Andice (Prewitt 1983) and Bell (Sorrow et al 1967).…”

Section: Results Of Isotope Studiesmentioning

confidence: 99%

“…These dates begin to define the Calf Creek horizon (Wyckoff 1994(Wyckoff , 1995 as it occurred at Spring Lake. The present study adds important chronometric, stylistic, and geoarchaeological context to the Calf Creek component at Spring Lake.…”

Section: Early Archaicmentioning

confidence: 99%