Journal of Geography and Cartography最新文献_第6页

A brief demonstration of a tool for SARAL/AltiKa waveform clustering 一个SARAL/AltiKa波形聚类工具的简短演示

Journal of Geography and Cartography Pub Date : 2019-06-01 DOI: 10.24294/jgc.v2i1.751

Surajit Dutta, Suvajit Ghosh, P. Thakur

引用次数: 0

Techniques and methods of seismic data processing in active volcanic areas: some applications to multichannel seismic profiles (Gulf of Naples, Southern Tyrrhenian sea, Italy) 活火山地区地震资料处理技术与方法:在多道地震剖面上的应用(意大利南第勒尼安海那不勒斯湾)

Journal of Geography and Cartography Pub Date : 2019-03-25 DOI: 10.24294/JGC.V0I0.1101

A. Gemma

{"title":"Techniques and methods of seismic data processing in active volcanic areas: some applications to multichannel seismic profiles (Gulf of Naples, Southern Tyrrhenian sea, Italy)","authors":"A. Gemma","doi":"10.24294/JGC.V0I0.1101","DOIUrl":"https://doi.org/10.24294/JGC.V0I0.1101","url":null,"abstract":"The techniques of seismic surveying, especially reflection seismic, considerably varied during last year’s. The contribution to this variation mainly came from the oil industry, which has developed the geophysical methods for oil searching. The basic techniques of seismic exploration consist of the generation of seismic waves artificially in the ground (source) and of the measurement of the requested times to cover the source-receiver path. Seismic data processing of three multichannel seismic profiles located in the Gulf of Naples for an overall length of 150 kilometers is herein presented. The techniques of seismic processing used for the elaboration of the seismic data are up-to-date. Some of them are based on complex mathematical models, allowing obtaining good velocity analysis for the production of stacked sections, ready to be interpreted. In this paper the procedures of processing of multichannel seismic data starting from the field data are shown. Sketch diagrams of the elaboration processes applied during several phases of the whole processing have been constructed. The used software are the Promax2D (Landmark Ltd.) and the Seismic Unix (Colorado School of Mines). The steps of the seismic data processes included the pre-processing, the sorting, the velocity analysis, the normal move-out (NMO), the stacking, the band-pass filtering, the multiple removals, the predictive de-convolution and the spiking de-convolution.","PeriodicalId":363659,"journal":{"name":"Journal of Geography and Cartography","volume":"442 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122825334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Morris method with improved sampling strategy and Sobol’ variance-based method, as validation tool on numerical model of Richard’s equation 采用改进采样策略的Morris方法和基于Sobol方差的方法，作为Richard方程数值模型的验证工具

Journal of Geography and Cartography Pub Date : 2019-03-01 DOI: 10.24294/JGC.V2I1.763

Sunny Goh

{"title":"Morris method with improved sampling strategy and Sobol’ variance-based method, as validation tool on numerical model of Richard’s equation","authors":"Sunny Goh","doi":"10.24294/JGC.V2I1.763","DOIUrl":"https://doi.org/10.24294/JGC.V2I1.763","url":null,"abstract":"Richard’s equation was approximated by finite-difference numerical scheme to model water infiltration profile in variably unsaturated soil. The published data of Philip’s semi-analytical solution was used to validate the simulated results from the numerical scheme. A discrepancy was found between the simulated and the published semi-analytical results. Morris method as a global sensitivity tool was used as an alternative to local sensitivity analysis to assess the results discrepancy. Morris method with different sampling strategies were tested, of which Manhattan distance method have resulted a better sensitivity measures and also a better scan of input space than Euclidean method. Moreover, Morris method at and Manhattan distance sampling strategy, with only 2 extra simulation runs than local sensitivity analysis, was able to produce reliable sensitivity measures ( , ). The sensitivity analysis results were cross-validated by Sobol’ variance-based method with 150,000 simulation runs. The global sensitivity tool has identified three important parameters, of which spatial discretization size was the sole reason of the discrepancy observed. In addition, a high proportion of total output variance contributed by parameters and is suggesting a greater significant digits is required to reduce its input uncertainty range.","PeriodicalId":363659,"journal":{"name":"Journal of Geography and Cartography","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131860174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Determination of Fire Extent in Forest Zones Using Remote Sensing Data Case Study: Golestan Province of Iran 利用遥感数据确定林区火情——以伊朗戈列斯坦省为例

Journal of Geography and Cartography Pub Date : 2019-03-01 DOI: 10.24294/JGC.V2I1.753

A. Karimi, Meysam Madadi, Sara Abdollahi, K. Ostad‑Ali‑Askari, S. Eslamian, V. Singh

{"title":"Determination of Fire Extent in Forest Zones Using Remote Sensing Data Case Study: Golestan Province of Iran","authors":"A. Karimi, Meysam Madadi, Sara Abdollahi, K. Ostad‑Ali‑Askari, S. Eslamian, V. Singh","doi":"10.24294/JGC.V2I1.753","DOIUrl":"https://doi.org/10.24294/JGC.V2I1.753","url":null,"abstract":"Fire is one of the most serious hazards, which causes many economic, social, ecological, and human damages every year in the world. Fire in forests and natural ecosystems destroys wood, regeneration, forest vegetation, as well as soil erosion and forest regeneration problems (due to the dryness of the weather and the weakness of the soil). Awareness of the extent of the zones that have been fired is important for forest management. On the other hand, the difficulty of fieldwork due to the high cost and inaccessible roads, etc. reveals the need for using remote sensing science to solve this problem. In this research, MODIS satellite images were used to detect and determine the fire extent of Golestan province forests in northern Iran. MID13q1 and MOD13q1 images were used to detect the normal conditions of the environment. The 15-year time series data were provided for the NDVI and NDMI indicators in 2000-2015. Then, the behavior of indicators in the fire zone was studied on the day after the fire. The burned zones by the fire were specified by determining the appropriate threshold and then, they were compared to long-term normals. In the NDMI and NDVI indicators, the mean of the numeric value threshold limit for determining the burnt pixels was respectively 1.865 and 0.743 of the reduction in their normal long-term period, which are selected as fire pixels. The results showed that the NDMI index could determine the extent of the burned zone with the accuracy of 95.15%.","PeriodicalId":363659,"journal":{"name":"Journal of Geography and Cartography","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130232852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Earthquake Response Control of Ground Soft Storey 地基软层地震反应控制

Journal of Geography and Cartography Pub Date : 2019-03-01 DOI: 10.24294/JGC.V2I1.564

Sakshi A Manchalwar

引用次数: 0

Predicting Fire Hazard Areas Using Vegetation Indexes, Case Study: Forests of Golestan Province, Iran 利用植被指数预测火灾危险区域，案例研究:伊朗戈列斯坦省森林

Journal of Geography and Cartography Pub Date : 2019-03-01 DOI: 10.24294/JGC.V2I1.451

A. Karimi, Sara Abdollahi, K. Ostad‑Ali‑Askari, S. Eslamian, V. Singh

{"title":"Predicting Fire Hazard Areas Using Vegetation Indexes, Case Study: Forests of Golestan Province, Iran","authors":"A. Karimi, Sara Abdollahi, K. Ostad‑Ali‑Askari, S. Eslamian, V. Singh","doi":"10.24294/JGC.V2I1.451","DOIUrl":"https://doi.org/10.24294/JGC.V2I1.451","url":null,"abstract":"Every year, hundreds of fires occur in the forests and rangelands across the world and damage thousands hectare of trees, shrubs, and plants which cause environmental and economical damages. This study aims to establish a real time forest fire alert system for better forest management and monitoring in Golestan Province. In this study, in order to prepare fire hazard maps, the required layers were produced based on fire data in Golestan forests and MODIS sensor data.At first, the natural fire data was divided into two categories of training and test samples randomly. Then, the vegetation moisture stresses and greenness were considered using six indexes of NDVI, MSI, WDVI, OSAVI, GVMI and NDWI in natural fire area of training category on the day before fire occurrence and a long period of 15 years, and the risk threshold of the parameters was considered in addition to selecting the best spectral index of vegetation. Finally, the model output was validated for fire occurrences of the test category. The results showed the possibility of prediction of fire site before occurrence of fire with more than 80 percent accuracy.","PeriodicalId":363659,"journal":{"name":"Journal of Geography and Cartography","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131258955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Marine geological maps of the Campania Region (Southern Tyrrhenian sea, Italy): considerations and contributions to a different scale of geological survey 坎帕尼亚地区(意大利南第勒尼安海)的海洋地质图:对不同规模地质调查的考虑和贡献

Journal of Geography and Cartography Pub Date : 2018-11-05 DOI: 10.24294/JGC.V1I3.507

G. Aiello

{"title":"Marine geological maps of the Campania Region (Southern Tyrrhenian sea, Italy): considerations and contributions to a different scale of geological survey","authors":"G. Aiello","doi":"10.24294/JGC.V1I3.507","DOIUrl":"https://doi.org/10.24294/JGC.V1I3.507","url":null,"abstract":"Marine geological maps of the Campania region have been constructed both to 1:25.000 and to a 1:10.000 scales in the frame of research projects financed by the Italian National Geological Survey, focusing, in particular, on the Gulf of Naples (Southern Tyrrhenian sea), a complex volcanic area where volcanic and sedimentary processes strongly interacted during the Late Quaternary and on the Cilento Promontory offshore. In this paper the examples of the geological sheets n. 464 “Isola di Ischia” and n. 502 “Agropoli” have been studied. The integration of the geological maps with the seismo-stratigraphic setting of the study areas has also been performed based on the realization of interpreted seismic profiles, providing interesting data on the geological setting of the subsurface. The coastal geological sedimentation has been studied in detail in the Ischia and Agropoli offshore. The mapped geological units are represented by: i) the rocky units of the acoustic basement (volcanic and/or sedimentary), ii) the deposits of the littoral environment, including the deposits of submerged beach and the deposits of toe of coastal cliff, iii) the deposits of the inner shelf environment, including the inner shelf deposits and the bioclastic deposits, iv) the deposits of the outer shelf environment, including the clastic deposits and the bioclastic deposits, v) the Lowstand System Tract, vi) the Pleistocene relict marine units, vii) different volcanic units, Pleistocene in age. The seismo-stratigraphic data, coupled with the sedimentological and environmental data provided by the geological maps, allow to give new insights on the geologic evolution of this area during the Late Quaternary. ","PeriodicalId":363659,"journal":{"name":"Journal of Geography and Cartography","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115910163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Analysis of shoreline changes along the coast of Tiruvallur district, Tamil Nadu, India 印度泰米尔纳德邦Tiruvallur地区海岸线变化分析

Journal of Geography and Cartography Pub Date : 2018-11-05 DOI: 10.24294/JGC.V1I3.764

K. Jayakumar

{"title":"Analysis of shoreline changes along the coast of Tiruvallur district, Tamil Nadu, India","authors":"K. Jayakumar","doi":"10.24294/JGC.V1I3.764","DOIUrl":"https://doi.org/10.24294/JGC.V1I3.764","url":null,"abstract":"Shoreline change is considered as one of the most dynamic process, which was mapped along the coast of Tiruvallur district by using topographic maps of 1976 and multi-temporal satellite images. The satellite images were pertaining to 1988, 1991, 2006, 2010, 2013 and 2016 which were used to extract the shorelines. It is important to map and monitor the HTL (High Tide line) at frequent time interval as it considered as shoreline, which was demarcated by using visual interpretation technique from satellite images and topographic maps. Followed by this, an overlay analysis was performed to calculate areas of erosion and accretion in the study area. The results revealed that the coast of Tiruvallur district lost 603 ha and gained 630 ha due to erosion and accretion respectively. It was confirmed after the ground truth survey carried out in the study area. The high accretion of 178 ha was found nearby Pulicat Lake and low accretion of 19 ha seen between Pulicat lake to Kattupali port. The high erosion area was found along the Pulicat lake, Kattupali and Ennore ports, and Ennore creek mouth and south of Ennore such as Periya Kuppam, Chinna Kuppam, Kasi Koil Kuppam, and Thyagarajapuram. It may be concluded that the main causes of coastal erosion and accretion in the study area are anthropogenic and natural factors, which alter the coastal environment. ","PeriodicalId":363659,"journal":{"name":"Journal of Geography and Cartography","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132822172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Genetic optimization mapping applied to medical image segmentation 遗传优化映射在医学图像分割中的应用

Journal of Geography and Cartography Pub Date : 2018-11-05 DOI: 10.24294/JGC.V1I3.830

P. Cornely

{"title":"Genetic optimization mapping applied to medical image segmentation","authors":"P. Cornely","doi":"10.24294/JGC.V1I3.830","DOIUrl":"https://doi.org/10.24294/JGC.V1I3.830","url":null,"abstract":"A number of important optimization problems have been classified as mapping applied towards segmentation of important features. The segmentation of important features can be formulated as configurational mapping problems by representing mapping configurations as solutions to problems of interest. One example of such configuration mapping is found in image segmentation where an image can be represented as unique subsets of a complete image and then evolved through mapping to become a segment of specific interest within an image. An effective segmentation mapping algorithm must determine the specific image subsets of an image field that best exhibit an a priori set of quantitative and qualitative characteristics. In this paper, a Genetic Optimization Mapping Algorithm is used to produce a population of sub-images, characteristic of specific image subsets of interest that were tested via a quantitative objective function, ranked using a linear fitness scheme, and modified using a genetic Crossover operator. The mapping algorithm is found to converge, within fifty to one hundred generations of maps, to a good fit to the targeted mapping configuration in a very robust and efficient manner.","PeriodicalId":363659,"journal":{"name":"Journal of Geography and Cartography","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127167631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

STUDY THE BIOPOTENTIAL PARAMETER FOR DETECTION OF SEISMIC AND ENVIORNMENTAL CHANGES IN INDIAN REGION 研究生物电位参数在印度地区地震和环境变化探测中的应用

Journal of Geography and Cartography Pub Date : 2018-11-05 DOI: 10.24294/JGC.V1I3.765

R.K.Tiwari, Vinod Kushwah

{"title":"STUDY THE BIOPOTENTIAL PARAMETER FOR DETECTION OF SEISMIC AND ENVIORNMENTAL CHANGES IN INDIAN REGION","authors":"R.K.Tiwari, Vinod Kushwah","doi":"10.24294/JGC.V1I3.765","DOIUrl":"https://doi.org/10.24294/JGC.V1I3.765","url":null,"abstract":"The changes in the magnetic flux generated (electric, magnetic and electromagnetic waves) on the surface of earth due to sudden changes is a matter of discussion. These emissions occur along the fault line generated due to geological and tectonic processes. When sudden changes occur in the environment due to seismic and atmospheric variations, these sensing was observed by creatures and human bodies because the animals and trees adopt the abnormal signals and change the behavior. We have analyzed the changing behavior of recorded signal by live sensors (i.e. banyan tree). So we use the deep rooted and long age’s banyan tree. Banyan tree (long ages) in which root has been working as a live sensor and record the geological and environmental changes. We record the low frequency signals which propagated through solar-terrestrial environment affect directly the root system of the banyan tree and changes has been observed by live sensors. Then, VLF signal ma(y propagate to the earth-ionosphere waveguide. We have also analyzed the different parameters of live cells which is inbuilt in latex of the tree, so we record the dielectric parameters of green stem latex and found some parameters i.e., dielectric constant (ε) and dielectric loss (ε’) of various trees to verify these natural hazards and found good correlation. Therefore, we can say by regularly monitoring the bio-potential signal and dielectric properties of banyan tree we can able to find the precursory signature of seismic hazards and environmental changes.","PeriodicalId":363659,"journal":{"name":"Journal of Geography and Cartography","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126326800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0