scholarly journals Depreciation factor equation to evaluate the economic losses from ground failure due to subsidence related to groundwater withdrawal

2014 ◽  
Vol 06 (03) ◽  
pp. 108-113 ◽  
Author(s):  
Víctor Manuel Hernández-Madrigal ◽  
Jesús Arturo Muñiz-Jáuregui ◽  
Víctor Hugo Garduño-Monroy ◽  
Netzahualcoyotl Flores-Lázaro ◽  
Sócrates Figueroa-Miranda
2019 ◽  
Vol 13 (02) ◽  
pp. 1950008 ◽  
Author(s):  
M. Capozzo ◽  
A. Rizzi ◽  
G. P. Cimellaro ◽  
M. Domaneschi ◽  
A. Barbosa ◽  
...  

It has been observed in different parts of the world that offshore earthquakes occurred in coastal regions were followed by tsunamis and catastrophic damages due to cascading effects. In this paper, an innovative methodology for the estimation of direct damage losses and resilience for a given community is presented. It combines two existent methodologies, including both earthquake and tsunami hazards. In detail, fragility functions related to earthquake intensity, ground failure and tsunami inundation are combined with regional hazard data to estimate damages and direct economic losses of buildings and bridges. The coastal city of Seaside in Oregon has been used as a case study and as one of the most vulnerable town in the Pacific North United States due to the proximity of a nearfield Cascadia Subduction Zone. The results indicate that, when the earthquake and the subsequent tsunami inundation are considered together, there is an overwhelming increase in the loss estimates in comparison to the case when the tsunami is separately considered.


Author(s):  
Xi-Cun He ◽  
Tian-Liang Yang ◽  
Shui-Long Shen ◽  
Ye-Shuang Xu ◽  
Arul Arulrajah

Land subsidence was once a major geo-hazard in the city of Shanghai, China. From 1921 to 1965, the maximum cumulative land subsidence in the urban areas of China reached 2.6 m. This large subsidence has resulted in high economic losses for Shanghai. The Regulation of Prevention and Control of Land Subsidence of Shanghai Municipality was published in 2013 (simply cited as the 2013-regulation in the following context). The characteristics of the 2013-regulation included the combination of the subsidence monitoring network and the groundwater detection network due to both the effects of groundwater withdrawal and construction. In addition, the setting up of a supervision system was also incorporated in the 2013-regulation. To control the land subsidence, Shanghai demarcated three land subsidence control zones, where special measures have been implemented. From a strategic environmental assessment (SEA) point of view, the 2013-regulation attains a high total score, indicating that the control of groundwater withdrawal and recharge is effective. The observed land subsidence over the past six years also confirms the effectiveness of the 2013-regulation with the most consideration of SEA for sustainable environment protection in Shanghai. However, more effort should be made in the implementation of SEA in land subsidence control in the future.


1997 ◽  
Vol 13 (4) ◽  
pp. 703-720 ◽  
Author(s):  
Charles A. Kircher ◽  
Robert K. Reitherman ◽  
Robert V. Whitman ◽  
Christopher Arnold

This paper describes methods for estimating building losses that were developed for the FEMA/NIBS earthquake loss estimation methodology (Whitman et al., 1997). These methods are of a new form and represent a significant step forward in the prediction of earthquake impacts. Unlike previous building loss models that are based on Modified Mercalli Intensity, the new methods use quantitative measures of ground shaking (and ground failure) and analyze model building types in a similar manner to the engineering analysis of a single structure. Direct economic losses predicted by these new methods for typical single-family homes compare well with observed losses to Los Angeles County residences damaged by the 1994 Northridge Earthquake.


Author(s):  
B. L. Redmond ◽  
Christopher F. Bob

The American Elm (Ulmus americana L.) has been plagued by Dutch Elm Disease (DED), a lethal disease caused by the fungus Ceratocystis ulmi (Buisman) c. Moreau. Since its initial appearance in North America around 1930, DED has wrought inexorable devastation on the American elm population, triggering both environmental and economic losses. In response to the havoc caused by the disease, many attempts have been made to hybridize U. americana with a few ornamentally less desirable, though highly DED resistant, Asian species (mainly the Siberian elm, Ulmus pumila L., and the Chinese elm Ulmus parvifolia Jacq.). The goal is to develop, through breeding efforts, hybrid progeny that display the ornamentally desirable characteristics of U. americana with the disease resistance of the Asian species. Unfortunately, however, all attempts to hybridize U. americana have been prevented by incompatibility. Only through a firm understanding of both compatibility and incompatibility will it be possible to circumvent the incompatibility and hence achieve hybridization.


ENTOMON ◽  
2020 ◽  
Vol 45 (1) ◽  
pp. 81-86
Author(s):  
Mohammad Yosof Amini ◽  
Ahamad Shah Mohammadi ◽  
Srinivasa N ◽  
Onkarappa S

False spider mites are serious pests of pomegranate and frequently cause considerable economic losses in other fruit crops as well. A field experiment conducted to evaluate eleven acaricides against Tenuipalpus aboharensis infesting pomegranate plants, revealed that wettable sulphur at 2.5 g and dicofol at 2.5 ml per litre were very effective and other acaricides viz. propargite, fenpyroximate, chlorfenapyr and buprofezin were also found effective against T. aboharensis.


2020 ◽  
Vol 139 ◽  
pp. 153-160
Author(s):  
S Peeralil ◽  
TC Joseph ◽  
V Murugadas ◽  
PG Akhilnath ◽  
VN Sreejith ◽  
...  

Luminescent Vibrio harveyi is common in sea and estuarine waters. It produces several virulence factors and negatively affects larval penaeid shrimp in hatcheries, resulting in severe economic losses to shrimp aquaculture. Although V. harveyi is an important pathogen of shrimp, its pathogenicity mechanisms have yet to be completely elucidated. In the present study, isolates of V. harveyi were isolated and characterized from diseased Penaeus monodon postlarvae from hatcheries in Kerala, India, from September to December 2016. All 23 tested isolates were positive for lipase, phospholipase, caseinase, gelatinase and chitinase activity, and 3 of the isolates (MFB32, MFB71 and MFB68) showed potential for significant biofilm formation. Based on the presence of virulence genes, the isolates of V. harveyi were grouped into 6 genotypes, predominated by vhpA+ flaB+ ser+ vhh1- luxR+ vopD- vcrD+ vscN-. One isolate from each genotype was randomly selected for in vivo virulence experiments, and the LD50 ranged from 1.7 ± 0.5 × 103 to 4.1 ± 0.1 × 105 CFU ml-1. The expression of genes during the infection in postlarvae was high in 2 of the isolates (MFB12 and MFB32), consistent with the result of the challenge test. However, in MFB19, even though all genes tested were present, their expression level was very low and likely contributed to its lack of virulence. Because of the significant variation in gene expression, the presence of virulence genes alone cannot be used as a marker for pathogenicity of V. harveyi.


Author(s):  
R. Horrell ◽  
A.K. Metherell ◽  
S. Ford ◽  
C. Doscher

Over two million tonnes of fertiliser are applied to New Zealand pastures and crops annually and there is an increasing desire by farmers to ensure that the best possible economic return is gained from this investment. Spreading distribution measurements undertaken by Lincoln Ventures Ltd (LVL) have identified large variations in the evenness of fertiliser application by spreading machines which could lead to a failure to achieve optimum potential in some crop yields and to significant associated economic losses. To quantify these losses, a study was undertaken to calculate the effect of uneven fertiliser application on crop yield. From LVL's spreader database, spread patterns from many machines were categorised by spread pattern type and by coefficient of variation (CV). These patterns were then used to calculate yield losses when they were combined with the response data from five representative cropping and pastoral situations. Nitrogen fertiliser on ryegrass seed crops shows significant production losses at a spread pattern CV between 30% and 40%. For P and S on pasture, the cumulative effect of uneven spreading accrues, until there is significant economic loss occurring by year 3 for both the Waikato dairy and Southland sheep and beef systems at CV values between 30% and 40%. For nitrogen on pasture, significant loss in a dairy system occurs at a CV of approximately 40% whereas for a sheep and beef system it is at a CV of 50%, where the financial return from nitrogen application has been calculated at the average gross revenue of the farming system. The conclusion of this study is that the current Spreadmark standards are a satisfactory basis for defining the evenness requirements of fertiliser applications in most circumstances. On the basis of Spreadmark testing to date, more than 50% of the national commercial spreading fleet fails to meet the standard for nitrogenous fertilisers and 40% fails to meet the standard for phosphatic fertilisers.Keywords: aerial spreading, crop response, economic loss, fertiliser, ground spreading, striping, uneven application, uneven spreading, yield loss


Author(s):  
I.V. Velikanova ◽  

The article presents an objective assessment of the extent of economic losses in the flax complex of Russia, including indirect ones, caused by the violation and imperfection of the technologies for growing, harvesting and primary processing of flax, as well as the rationale for minimizing them. It has been established that the most relevant of these methods should include the most complete restoration of the functions of the weakest links in the technological, technical and organizational - economic systems of the flax subcomplex.


2019 ◽  
Vol 7 (6) ◽  
pp. 188-190
Author(s):  
Nikhil Bhardwaj ◽  
Shubham Jaiswal ◽  
Ananya Singh ◽  
S.B Nikam
Keyword(s):  

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