SEISMIC EXPLORATION IN THE CANADIAN ARCTIC ISLANDS

Geophysics ◽  
1962 ◽  
Vol 27 (2) ◽  
pp. 253-273 ◽  
Author(s):  
George D. Hobson
Keyword(s):  
Canadian Arctic ◽  
Weather Conditions ◽  
High Arctic ◽  
Seismic Exploration ◽  
Efficient Operation ◽  
Reflection And Refraction ◽  
Adverse Weather Conditions ◽  
Adverse Weather ◽  
Sverdrup Basin ◽  
June July

The Polar Continental Shelf Project, a broad program of research in the Canadian Arctic, was started in 1959. Seismic studies were undertaken by the Geological Survey of Canada. Refraction and reflection techniques were employed in the first stages of a reconnaissance program during May, June, July, and August 1960. Certain new techniques were developed during this seismic program in the high Arctic. The crew operated from motor toboggans in 1960 but helicopters will be used more extensively in the future for a more efficient operation. Adverse weather conditions such as blizzards, low temperatures, white‐outs, wind, and rain are a hindrance to operations at various times of the year. The sea ice appears to present no great noise problem to standard recording techniques. Several air shots were recorded in direct comparison with surface shots but the gain in energy level is not enough to justify using the method. The records from various locations within the Sverdrup Basin indicate that both reflection and refraction techniques are satisfactory. A cross‐section illustrates the results of the 1960 program.

INSECTS AND ARACHNIDS OF BATHURST ISLAND, CANADIAN ARCTIC ARCHIPELAGO

1972 ◽  
Vol 104 (1) ◽  
pp. 81-88 ◽  
Author(s):  
H. V. Danks ◽  
J. R. Byers
Keyword(s):  
Climatic Factors ◽  
Canadian Arctic ◽  
Weather Conditions ◽  
High Arctic ◽  
Insect Species ◽  
Canadian Arctic Archipelago ◽  
Terrestrial Arthropods ◽  
Adverse Weather Conditions ◽  
Adverse Weather ◽  
Arthropod Fauna

AbstractTerrestrial arthropods collected from Bathurst Island in 1969 are listed: 78 species (4 spiders, 13 mites, and 61 insects, 30 of which are chironomids) have now been collected in this area of the high arctic. Notes on the overwintering of some of the commoner insect species are given. Although the collecting season was a poor one in 1969 because of adverse weather conditions, the list probably represents half or more of the island’s arthropod fauna. The nature of the list indicates that this fauna is impoverished compared to some other areas of the Queen Elizabeth Islands. This impoverishment may be largely explained by climatic factors.

scholarly journals Challenges of Poultry Farming In Makurdi Benue State, North-Central Nigeria

2020 ◽  
pp. 116-122
Author(s):  
Leo Daniel Ojabo ◽  
Tokshidung Rittongwe Yilji ◽  
Ibrahim Adah Okachi
Keyword(s):  
Weather Conditions ◽  
Poultry Production ◽  
Flock Size ◽  
Efficient Operation ◽  
North Central ◽  
Direct Observations ◽  
Adverse Weather Conditions ◽  
Adverse Weather ◽  
The Government ◽  
Structured Questionnaire

The study assessed challenges of poultry production in Makurdi Area of Benue State, North Central Nigeria. Information on production activities, management and problems were collected from 50 poultry farmers in the study area using structured questionnaire and assessment through direct observations. The data were analyzed using tables, frequency distribution and percentages. From the analysis, the poultry enterprises are confronted with a number of constraints mitigating against their efficient operation. Majority (66%) of the poultry farms in Makurdi were of low to medium scale with flock size of < 1000 birds. The problems of low capital, high input costs, diseases and adverse weather conditions were identified in the study area. High cost of feeds and at times scarcity of layer feeds are major problems. They also identified proper marketing outlets especially for broiler sales. All these problems can be tackled by making loans/grants easily accessible by the government and encouraging farmers to organise themselves into cooperatives. By so doing their resources can be pooled together for meaningful development of their farms and the poultry industry in Benue State. Extension services should include creating awareness of the importance of biosecurity measures on farms in order to limit infections.

scholarly journals Ship Handling in Unprotected Waters: A Review of New Technologies in Escort Tugs to Improve Safety

2021 ◽  
Vol 2 (1) ◽  
pp. 46-62
Author(s):  
Santiago Iglesias-Baniela ◽  
Juan Vinagre-Ríos ◽  
José M. Pérez-Canosa
Keyword(s):  
High Performance ◽  
New Technologies ◽  
Weather Conditions ◽  
Hull Form ◽  
Best Available Technologies ◽  
Adverse Weather Conditions ◽  
Adverse Weather ◽  
New Type ◽  
Technological Challenge ◽  
And Performance

It is a well-known fact that the 1989 Exxon Valdez disaster caused the escort towing of laden tankers in many coastal areas of the world to become compulsory. In order to implement a new type of escort towing, specially designed to be employed in very adverse weather conditions, considerable changes in the hull form of escort tugs had to be made to improve their stability and performance. Since traditional winch and ropes technologies were only effective in calm waters, tugs had to be fitted with new devices. These improvements allowed the remodeled tugs to counterbalance the strong forces generated by the maneuvers in open waters. The aim of this paper is to perform a comprehensive literature review of the new high-performance automatic dynamic winches. Furthermore, a thorough analysis of the best available technologies regarding towline, essential to properly exploit the new winches, will be carried out. Through this review, the way in which the escort towing industry has faced this technological challenge is shown.

Statistical analysis and critical review of navigational accidents in adverse weather conditions

2018 ◽  
Vol 163 ◽  
pp. 502-517 ◽  
Author(s):  
N.P. Ventikos ◽  
A.D. Papanikolaou ◽  
K. Louzis ◽  
A. Koimtzoglou
Keyword(s):  
Statistical Analysis ◽  
Critical Review ◽  
Weather Conditions ◽  
Adverse Weather Conditions ◽  
Adverse Weather

Gendered Experiences of Mobility

Transfers ◽  
2013 ◽  
Vol 3 (3) ◽  
pp. 79-98 ◽  
Author(s):  
Shahnaz Huq-Hussain ◽  
Umme Habiba
Keyword(s):  
Middle Class ◽  
Travel Behavior ◽  
Weather Conditions ◽  
Capital City ◽  
Mobility Patterns ◽  
Security Issues ◽  
Adverse Weather Conditions ◽  
Adverse Weather ◽  
The City ◽  
Detailed Picture

This article examines the travel behavior of middle-class women in Dhaka, the capital city of Bangladesh and one of the world's largest and most densely populated cities. In particular, we focus on women's use of non-motorized rickshaws to understand the constraints on mobility for women in Dhaka. Primary research, in the form of an empirical study that surveyed women in six neighborhoods of Dhaka, underpins our findings. Our quantitative and qualitative data presents a detailed picture of women's mobility through the city. We argue that although over 75 percent of women surveyed chose the rickshaw as their main vehicle for travel, they did so within a complex framework of limited transport options. Women's mobility patterns have been further complicated by government action to decrease congestion by banning rickshaws from major roads in the city. Our article highlights the constraints on mobility that middle-class women in Dhaka face including inadequate services, poorly maintained roads, adverse weather conditions, safety and security issues, and the difficulty of confronting traditional views of women in public arenas.

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