A northern Cordilleran ocean–continent transect: Sitka Sound, Alaska, to Atlin Lake, British Columbia

1991 ◽  
Vol 28 (6) ◽  
pp. 840-853 ◽  
Author(s):  
David A. Brew ◽  
Susan M. Karl ◽  
David F. Barnes ◽  
Robert C. Jachens ◽  
Arthur B. Ford ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
High Rate ◽  
Granitic Rocks ◽  
Coast Mountains ◽  
Glacier Bay ◽  
Denali Fault ◽  
Queen Charlotte Islands ◽  
Sitka Sound ◽  
Almost All ◽  
Alexander Terrane

The 155 km wide, 310 km long Sitka Sound – Atlin Lake continent–ocean transect includes almost all the geologic, geophysical, and geotectonic elements of the Canadian Cordillera. It crosses the Chugach, Wrangellia, Alexander, Stikine, and Cache Creek terranes, the Gravina and Laberge overlap assemblages, intrusive and metamorphic belts, and neotectonic faults that bound major blocks. Linear belts of magnetic highs are associated with Jurassic and Cretaceous granitic belts in Wrangellia and the western and central parts of the Alexander terrane and with the granitic rocks of the Coast plutonic–metamorphic complex (CPMC). The Border Ranges fault may be expressed at depth on either side of the Peril Strait fault. An enigmatic northeast-trending gradient in the CPMC and adjacent rocks separates a regional magnetic low to the northwest from a 300 nT high field to the southeast. The Bouguer gravity field decreases in broad steps from Pacific crust high values to lows at the international boundary, with pronounced gradients at the east edge of Chugach terrane and west edge of of CPMC. It indicates that the crust thickens from about 20 to 40 km from southwest to northeast. Ultramafic bodies in the Chugach, Alexander, and Wrangellia terranes and Gravina assemblage underlie local highs. Most of the accumulated seismic strain is released by large earthquakes on the Fairweather – Queen Charlotte Islands plate-margin fault, but the northern part of the Glacier Bay region, the Denali fault zone, and the Coast Mountains also have significant seismicity. Part of the Glacier Bay region is being uplifted at a high rate. Most of these features are related to the joining of (i) Wrangellia to Alexander terrane (Carboniferous), (ii) Stikine to Cache Creek terrane (Early Jurassic), (iii) Alexander terrane and Gravina assemblage to Stikine (Late Cretaceous), and (iv) Chugach to Wrangellia and Alexander terrane (Late Cretaceous or Paleogene).

Seismicity in the St. Elias region of northwestern Canada and southeastern Alaska

1983 ◽  
Vol 73 (4) ◽  
pp. 1117-1137
Author(s):  
Robert B. Horner
Keyword(s):  
British Columbia ◽  
Recurrence Relation ◽  
Active Zone ◽  
Monitoring Program ◽  
High Rate ◽  
Fault System ◽  
Glacier Bay ◽  
Low Level ◽  
Denali Fault ◽  
Level Monitoring

abstract Low-level monitoring in the St. Elias region between September 1978 and March 1981 has identified two principal zones of seismicity that are consistent with the historical pattern of seismicity at higher magnitude levels. The most active zone follows the plate boundary along the coast of southeast Alaska. A recurrence relation based on completeness over varying time intervals is log(N ≧ M) = −0.74M + 3.77. A less active zone is observed generally following the Duke River and Dalton segments of the Denali fault system through the southwest Yukon. Instead of continuing into Chatham Strait, this trend of seismicity turns south into the Glacier Bay region to connect with the Fairweather fault north of Cross Sound. The seismicity and high rate of uplift observed in the Glacier Bay region is probably the result of convergence across the Fairweather fault north of Cross Sound. The recurrence relation for the Denali zone is log(N ≧ M) = −0.90M + 3.77. A similiar recurrence curve is found for activity with magnitudes down to about 2.0 observed over the 39-month low-level monitoring program. The rate of activity in the Denali zone appeared to decrease for a period of about 1 yr following the 28 February 1979, M 7.2 St. Elias earthquake. The rate of aftershock activity was also found to vary, with the b value decreasing throughout the sequence. Only minor seismicity is observed northeast of the Denali fault system in the southwest Yukon and east of Chatham Strait in northwest British Columbia. A prominent cluster east of Juneau near the British Columbia border may be related to volcanic activity. A 5-week microearthquake survey over a 40-km segment of the Denali fault system found activity in a highly faulted zone about 15 km wide at depths of less than about 15 km. A composite P-nodal solution indicates motion on either east-west or north-south striking planes, neither of which are consistent with the general trend of the Denali system in the area. An average slip rate of no more than about 1 mm/yr is estimated from the seismicity for the Denali fault system through the southwest Yukon. An estimate of the minimum present accumulated elastic strain suggests the potential for a magnitude 612 earthquake.

III.—Recent Observations on the Glaciation of British Columbia and Adjacent Regions

1888 ◽  
Vol 5 (8) ◽  
pp. 347-350 ◽  
Author(s):  
Geo. M. Dawson
Keyword(s):  
British Columbia ◽  
Glacial Period ◽  
Coast Range ◽  
Coast Mountains ◽  
One Stage ◽  
Queen Charlotte Islands ◽  
Glacier Ice ◽  
Inland Ice ◽  
Great Valley ◽  
The U.S

Previous observations in British Columbia have shown that at one stage in the Glacial period—that of maximum glaciation—a great confluent ice-mass has occupied the region which may be named the Interior Plateau, between the Coast Mountains and Gold and Eocky Mountain Kanges. From the 55th to the 49th parallel this great glacier has left traces of its general southward or southeastward movement, which are distinct from those of subsequent local glaciers. The southern extensions or terminations of this confluent glacier, in Washington and Idaho Territories, have quite recently been examined by Mr. Bailley Willis and Prof. T. C. Chamberlin, of the U.S. Geological Survey. There is, further, evidence to show that this inland-ice flowed also, by transverse valleys and gaps, across the Coast Range, and that the fiords of the coast were thus deeply filled with glacier-ice which, supplemented by that originating on the Coast Range itself, buried the entire great valley which separates Vancouver Island from the mainland and discharged seaward round both ends of the island. Further north, the glacier extending from the mainland coast touched the northern shores of the Queen Charlotte Islands.

BINDING OF 17-SUBSTITUTED 16-NITRILE 16,17-SECOESTRANE COMPOUNDS TO ESTROGEN RECEPTORS – „IN VITRO“ AND „IN SILICO“ STUDY

2021 ◽  
Author(s):  
Suzana S. Jovanović-Šanta ◽  
◽  
Esma Isenović ◽  
Julijana A. Petrović ◽  
Yaraslau U. Dzichenka
Keyword(s):  
Amino Acids ◽  
Estrogen Receptors ◽  
Nuclear Translocation ◽  
Binding Mode ◽  
High Rate ◽  
Dynamics Simulation ◽  
Breast Cancers ◽  
Number Of Binding Sites ◽  
Almost All

About 75% of breast cancers express estrogen receptors (ERs), which is a good base for an efficient endocrine therapy. This gives the opportunity for the treatment of patients with antiestrogens, compounds that bind to the ERs and thus compete to estradiol (E2), preventing its action in progression of estrogen-depending cancers. Here we present results of testing the effect of the modified steroids, namely 17-substituted 16-nitrile 16,17-secoestrane compounds on the E2-ER complex forming, its stability, nuclear translocation and binding to DNA. Almost all compounds in moderate to high rate induced lower forming of this complex, destabilizing it – they increased Kd of this complex and decreased number of binding sites. Complex formed in the presence of some test secosteroids could pass to the nucleus, while other compounds inhibited translocation. In the presence of some compounds binding of the formed complex E2-ER to DNA was noticed. Docking followed molecular dynamics simulation was performed to reveal binding mode of E2 to ER in the presence of test secosteroids. Amino acids important for binding process and complex stabilization were detected. Analysis of the simulation data allowed identifying key amino acids and type of binding of the secoestrane compounds, important for high affinity binding of the steroidal compounds.

Coronavirus and Fingerprint Technology

2021 ◽  
Vol 13 (4) ◽  
pp. 1-16
Author(s):  
Gabriel B. Iwasokun
Keyword(s):  
Severe Acute Respiratory Syndrome ◽  
Viral Infection ◽  
Virus Disease ◽  
High Rate ◽  
Corona Virus ◽  
The World ◽  
Almost All

The corona virus disease, otherwise known as COVID-19, is an extremely communicable and pathogenic viral infection caused by severe acute respiratory syndrome corona virus 2 (SARS-CoV-2), which emerged in Wuhan, China in December 2019 and has spread to almost all the countries in the world. The transmission of the virus is through touching of the nose, eyes, or mouth by a finger that has been contaminated through droplets on a surface when a carrier sneezes or coughs. Since the existing fingerprint devices are predominantly contact based, it implies that they can aid in the transmission of the virus. This paper discusses the application of fingerprint devices in notable places with high rate of COVID-19 infection as well as the threats to fingerprint technologies and the countermeasures. The need to change focus and orientation towards contactless biometric technologies as sure solution to the fear and animosity expressed towards contact-based fingerprint technology is also expatiated.

scholarly journals Boater Safety: Communicating Weather Forecast Information to High-Stakes End Users

2012 ◽  
Vol 4 (1) ◽  
pp. 7-19 ◽  
Author(s):  
Sonia Savelli ◽  
Susan Joslyn
Keyword(s):  
Pacific Northwest ◽  
Online Survey ◽  
Puget Sound ◽  
Weather Forecast ◽  
High Rate ◽  
False Alarms ◽  
High Stakes ◽  
Precautionary Action ◽  
Time Of Year ◽  
Almost All

Abstract Recreational boaters in the Pacific Northwest understand that there is uncertainty inherent in deterministic forecasts as well as some of the factors that increase uncertainty. This was determined in an online survey of 166 boaters in the Puget Sound area. Understanding was probed using questions that asked respondents what they expected to observe when given a deterministic forecast with a specified lead time, for a particular weather parameter, during a particular time of year. It was also probed by asking respondents to estimate the number of observations, out of 100 or out of 10, that they expected to fall within specified ranges around the deterministic forecast. Almost all respondents anticipated some uncertainty in the deterministic forecast as well as specific biases, most of which were born out by an analysis of local National Weather Service verification data. Interestingly, uncertainty and biases were anticipated for categorical forecasts indicating a range of values as well, suggesting that specifying numeric uncertainty would improve understanding. Furthermore, respondents’ answers suggested that they expected a high rate of false alarms among warning and advisory forecasts. Nonetheless, boaters indicated that they would take precautionary action in response to such warnings, in proportions related to the size of boat they were operating. This suggests that uncertainty forecasts would be useful to these experienced forecast consumers, allowing them to adapt the forecast to their specific boating situation with greater confidence.

Model of evolution of the Bella Coola – Ocean Falls Region, Coast Mountains, British Columbia

1968 ◽  
Vol 5 (6) ◽  
pp. 1429-1441 ◽  
Author(s):  
A. J. Baer
Keyword(s):  
British Columbia ◽  
Granitic Rocks ◽  
Coast Mountains ◽  
Early Tertiary ◽  
Upper Paleozoic ◽  
Late Tertiary ◽  
Bella Coola

Granitic rocks and metavolcanics underlie most of the Coast Mountains of British Columbia between the fifty-second and the fifty-third parallel, about half-way between Vancouver and Prince Rupert. The age of most rocks is unknown. The area has been involved in at least two orogenic cycles. The oldest known supracrustal rocks (Upper Paleozoic?) have been metamorphosed to gneisses, deformed along northeasterly trends, and intruded by granitic plutons, probably early in the Mesozoic Era. These rocks formed the basement of disconformable Mesozoic sediments and volcanics. The basement and its Mesozoic cover were metamorphosed and deformed along northwesterly trends in the early Tertiary. In the late Tertiary (Pliocene?) post-kinematic granites were emplaced and basalts were extruded for a period extending to postglacial times. The model is possibly applicable to all of the Coast Mountains in Canada.

scholarly journals Revisiting comorbidities in gout: a cluster analysis

2013 ◽  
Vol 74 (1) ◽  
pp. 142-147 ◽  
Author(s):  
Pascal Richette ◽  
Pierre Clerson ◽  
Laure Périssin ◽  
René-Marc Flipo ◽  
Thomas Bardin
Keyword(s):  
Cluster Analysis ◽  
Renal Failure ◽  
Large Cohort ◽  
High Rate ◽  
Cross Sectional ◽  
High Prevalence ◽  
History Of ◽  
Obesity Hypertension ◽  
Almost All

ObjectivesThe reciprocal links between comorbidities and gout are complex. We used cluster analysis to attempt to identify different phenotypes on the basis of comorbidities in a large cohort of patients with gout.MethodsThis was a cross-sectional multicentre study of 2763 gout patients conducted from November 2010 to May 2011. Cluster analysis was conducted separately for variables and for observations in patients, measuring proximity between variables and identifying homogeneous subgroups of patients. Variables used in both analyses were hypertension, obesity, diabetes, dyslipidaemia, heart failure, coronary heart disease, renal failure, liver disorders and cancer.ResultsComorbidities were common in this large cohort of patients with gout. Abdominal obesity, hypertension, metabolic syndrome and dyslipidaemia increased with gout duration, even after adjustment for age and sex. Five clusters (C1–C5) were found. Cluster C1 (n=332, 12%) consisted of patients with isolated gout and few comorbidities. In C2 (n=483, 17%), all patients were obese, with a high prevalence of hypertension. C3 (n=664, 24%) had the greatest proportion of patients with type 2 diabetes (75%). In C4 (n=782, 28%), almost all patients presented with dyslipidaemia (98%). Finally, C5 (n=502, 18%) consisted of almost all patients with a history of cardiovascular disease and renal failure, with a high rate of patients receiving diuretics.ConclusionsCluster analysis of comorbidities in gout allowed us to identify five different clinical phenotypes, which may reflect different pathophysiological processes in gout.

CCTV and robbery in high-rise public housing in Hong Kong

2020 ◽  
Vol 19 (3) ◽  
pp. 119-130
Author(s):  
Lina Chow ◽  
Rob I. Mawby
Keyword(s):  
Hong Kong ◽  
High Rate ◽  
Community Safety ◽  
Content Type ◽  
High Rise ◽  
Police Statistics ◽  
Almost All ◽  
The Impact ◽  
Industrial Societies ◽  
Practical Implications

Purpose In Hong Kong, robberies occurring in the elevators in high-rise buildings were identified as a particular problem and the purpose of this paper is to address a dedicated programme aimed at reducing such offences. Design/methodology/approach A comparison of elevator-based robbery statistics over a ten-year policy-implication period, in two police districts, one with a high rate of public ownership and a traditionally high rate of elevator robberies, the second with a higher rate of private ownership and a traditionally lower rate of such robberies. Findings The evidence suggests that the programme was successful, with such robberies declining significantly and with no evidence of displacement. Research limitations/implications This research is based on police statistics. There is a need for more research, for example, investigating residents’ involvement with the system and the extent to which it encouraged shared ownership of the initiative. Practical implications What is clear is that, where in the West the Newman legacy led to the demonisation of high-rise public sector housing, in Hong Kong, where there is no viable alternative, the use of CCTV helped transform such areas into safer communities. Social implications The rate of robbery, most notably elevator-based robbery, fell dramatically, improving community safety. Originality/value Though there has been a considerable amount of research on the impact of CCTV on crime, almost all of this has focussed on Western industrial societies and little of it has addressed robbery. To the best of authors’ knowledge, this research is the first in Hong Kong, and the first to evaluate the impact of CCTV on robbery.

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