Geofizika最新文献_第3页

Biexponential decrease of PAR in coastal waters (Northern Adriatic) 沿海水域标准杆数的双指数下降（亚得里亚海北部）

IF 1 4区地球科学

Geofizika Pub Date : 2022-03-31 DOI: 10.15233/gfz.2022.39.2

Borut Umer, V. Malačič

{"title":"Biexponential decrease of PAR in coastal waters (Northern Adriatic)","authors":"Borut Umer, V. Malačič","doi":"10.15233/gfz.2022.39.2","DOIUrl":"https://doi.org/10.15233/gfz.2022.39.2","url":null,"abstract":"The attenuation coefficients of photosynthetically active radiation (PAR) were extracted from the vertical profiles of PAR in coastal waters (the Gulf of Trieste, Northern Adriatic). The vertical profiles were collected roughly twice per month from July 2011 to December 2015, and the PAR values just above the sea surface were compared with the PAR data measured on a buoy.This research supports the nonlinear fit with the biexponential expression for the dependence of PAR with depth, yielding a much better match with the data than the fit with a mono-exponential expression. However, another reasoning for biexponential attenuation is because it functions as a solution for a homogeneous differential equation of a second order. The method for estimating the water type is offered with an analysis of the attenuation coefficients of PAR. It was found that for a particular location (the Gulf of Trieste), the attenuation coefficient in a mono-exponential decrease of PAR is 0.19-0.21 m-1, while for a biexponential decrease of PAR, the coefficient of the long-range attenuation is 0.12-0.14 m-1 and that of short-range attenuation is 0.8-0.9 m-1. This leads to the conclusion that most water columns match coastal water type 1, while the surface layer is represented by coastal water types 7 or 9. From the estimate of the water types, the coefficients of downward irradiation were inferred as 0.19 m-1∓0.01 m-1 (long-range attenua-tion) and 3.0 m-1∓0.7 m-1 (short-range attenuation). These coefficients can determine the heat source inside the water column.","PeriodicalId":50419,"journal":{"name":"Geofizika","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46329874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A review of forest fire research directions 森林火灾研究方向综述

IF 1 4区地球科学

Geofizika Pub Date : 2022-03-31 DOI: 10.15233/gfz.2022.39.7

Diana Škurić Kuraži, Ivana Nižetić Kosović, Ivana Herceg-Bulić

{"title":"A review of forest fire research directions","authors":"Diana Škurić Kuraži, Ivana Nižetić Kosović, Ivana Herceg-Bulić","doi":"10.15233/gfz.2022.39.7","DOIUrl":"https://doi.org/10.15233/gfz.2022.39.7","url":null,"abstract":"Forest fires cause environmental and economic damages every year, especially in the southern part of Europe. Approaches to estimate the fire risk vary from practical to scientific, since different professions as firefighters, meteorologists, soldiers and foresters are involved. The Internet of Things enables to connect different sources of information in one place, however, the understanding of usage and processes that caused the disaster sometimes is missing. The aim of this article is to give a comprehensive overview of nowadays possibilities for fighting with the fires and categorization of different methods, techniques and approaches. Considering the timeline of the information about fires we are dealing with, we propose three categories: past which mostly refers to analysis, present which encompasses monitoring and future covering forecasting. Each of the categories is described in detail, confirmed with related work and examples, and enriched with challenges and future directions. Dealing with forest fires is very complex, therefore it is difficult to deal with all proposed categories at the same time. However, due to the growing amount of available information and increasing interest of scientists from different research fields, there are more examples of intertwined areas dealing with forest fires. It is expected that in the future it will be possible, in real time, to handle various sources of data and forecast fire danger and risk with high spatial and temporal resolution.","PeriodicalId":50419,"journal":{"name":"Geofizika","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45229128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Interpretation of the magnetic anomalies over the Mid-Atlantic Ocean Ridge using Swarm-A satellite Swarm-A卫星对大西洋中脊磁异常的解释

IF 1 4区地球科学

Geofizika Pub Date : 2022-03-31 DOI: 10.15233/gfz.2022.39.3

Ilkin Özsöz, Ankaya Pamukçu

引用次数: 0

Development of a NWP based Integrated Block Level Forecast System (IBL-FS) using statistical post-processing technique for the state Jharkhand (India) 利用统计后处理技术为贾坎德邦（印度）开发基于NWP的综合区块水平预测系统（IBL-FS）

IF 1 4区地球科学

Geofizika Pub Date : 2022-03-31 DOI: 10.15233/gfz.2022.39.6

S. D. Kotal, R. Sharma

{"title":"Development of a NWP based Integrated Block Level Forecast System (IBL-FS) using statistical post-processing technique for the state Jharkhand (India)","authors":"S. D. Kotal, R. Sharma","doi":"10.15233/gfz.2022.39.6","DOIUrl":"https://doi.org/10.15233/gfz.2022.39.6","url":null,"abstract":"A statistical post-processing forecast system for medium range predictions using the GFS model has been developed for Jharkhand (India) with the aim of improving rainfall and temperature predictions for agricultural applications. The basis of the integrated block level forecast system (IBL-FS) build includes (i) Decaying weighted mean (DWM) bias correction technique, (ii) Value addition and (iii) Inverse distance squared weighted (IDSW) interpolation. In the first step, model bias corrected district level forecast for 24 districts of Jharkhand is generated from the output of numerical GFS model (T1534L64) by applying DWM bias correction technique. In the second step, these bias corrected forecasts are value-added using forecast from various NWP models and synoptic methods. Finally in the third step, the IDSW interpolation method is used to generate the forecast at an unmeasured block from the value-added district level forecast of the surrounding districts. The value-added forecast for 263 blocks for the state Jharkhand is prepared up to medium range time scale (120h). The performance skill of IBL-FS is evaluated for rainfall during monsoon season 2018 and 2019, for minimum temperature during winter season 2019, and for maximum temperature during summer season 2019 using different statistical metrics. The skill of IBL-FS is found to be higher than the direct model forecast (DMFC) by 15% to 43% for minimum temperature, by 18% to 41% for maximum temperature, and by 22% to 30% for rainfall forecast for day1 to day5 forecasts. This study concludes that the integrated approach is more skillful than DMFC for real time forecasts and useful for farming for the blocks of Jharkhand.","PeriodicalId":50419,"journal":{"name":"Geofizika","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49520584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Korištenje Varimax Norm metode za poboljšanje i prepoznavanje rubnih podataka polja potencijala 使用Varimax范数方法改进和识别势场的边际数据

IF 1 4区地球科学

Geofizika Pub Date : 2022-03-31 DOI: 10.15233/gfz.2022.39.1

Jiayong Yan, Xu Wang, Yongqian Zhang, Chong Zhang, Fan Luo, Zhihui Wang

引用次数: 0

PM10 and the air quality stress index in an industrial city of Eastern Mediterranean 东地中海某工业城市PM10与空气质量压力指数

IF 1 4区地球科学

Geofizika Pub Date : 2022-03-31 DOI: 10.15233/gfz.2022.39.4

Eleni Verouti, Dimitrios Gavathas, Anastasios Mavraki

引用次数: 0

Long-term measurements at Bakar tide-gauge station (east Adriatic) 巴卡尔潮汐计站(东亚得里亚海)的长期测量

IF 1 4区地球科学

Geofizika Pub Date : 2022-03-21 DOI: 10.15233/gfz.2022.39.8

Iva Međugorac, M. Pasarić, M. Orlić

引用次数: 2

Calibration of shaking intensity models of the “Extremum” system to simulate loss due to the 2020 Croatia earthquakes 校准“极值”系统的震动强度模型，以模拟2020年克罗地亚地震造成的损失

IF 1 4区地球科学

Geofizika Pub Date : 2022-01-24 DOI: 10.15233/gfz.2021.38.8

S. Markušić, N. Malaeva, S. Suchshev, I. Gabsatarova, N. Frolova

引用次数: 0

The public response and educational outreach through social media after the Zagreb earthquake of 22 March 2020 2020年3月22日萨格勒布地震后通过社交媒体的公众反应和教育宣传

IF 1 4区地球科学

Geofizika Pub Date : 2022-01-24 DOI: 10.15233/gfz.2021.38.7

M. Mustać, I. Dasović, Helena Latečki, I. Cecić

{"title":"The public response and educational outreach through social media after the Zagreb earthquake of 22 March 2020","authors":"M. Mustać, I. Dasović, Helena Latečki, I. Cecić","doi":"10.15233/gfz.2021.38.7","DOIUrl":"https://doi.org/10.15233/gfz.2021.38.7","url":null,"abstract":"Following the 22 March 2020 ML 5.5 earthquake near Zagreb, Croatia, the citizens became increasingly interested in earthquakes and the multitude of simultaneous visitors caused the webpage with Croatian Seismological Survey reports on earthquakes to crash. To remedy the situation, seismologists used social network accounts to provide information, using the opportunity to educate the citizens on basic concepts of seismology, earthquake preparedness and the occurring seismic sequence. Citizens’ feedback was useful to improve the communication, but required extensive moderation. In July 2020, three seismologists from the Department of Geophysics, Faculty of Science, University of Zagreb, one from the Slovenian Environment Agency, and a psychologist from the Croatian Catholic University conducted a poll to find out which sources of information citizens mostly use, their knowledge about earthquakes, and the level of fear they were experiencing due to the earthquakes. Most respondents relied on institutional sources of information and their knowledge on different aspects of earthquake preparedness increased relatively compared to the time before the earthquake. The majority of respondents was extremely worried on the day of the mainshock, predominantly because they were concerned of a possible stronger event, their safety and the safety of their close ones.","PeriodicalId":50419,"journal":{"name":"Geofizika","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41745440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Geodetic and seismological analysis of the CROPOS ZAGR station kinematics during the Zagreb 2020 ML 5.5 earthquake 2020年萨格勒布5.5级地震期间CROPOS ZAGR台站运动学的大地测量和地震学分析

IF 1 4区地球科学

Geofizika Pub Date : 2022-01-24 DOI: 10.15233/gfz.2021.38.10

D. Sugar, Z. Bacic, I. Dasović

{"title":"Geodetic and seismological analysis of the CROPOS ZAGR station kinematics during the Zagreb 2020 ML 5.5 earthquake","authors":"D. Sugar, Z. Bacic, I. Dasović","doi":"10.15233/gfz.2021.38.10","DOIUrl":"https://doi.org/10.15233/gfz.2021.38.10","url":null,"abstract":"The CROPOS’s ZAGR stations, one of 33 stations of the Croatian permanent GNSS (Global Navigation Satellite System) network CROPOS (Croatian Positioning System), is located in Zagreb’s city centre. For the first time, motion of one of the CROPOS stations (the ZAGR station) during an earthquake shake (the Zagreb 2020 ML5.5) was analysed by the PPK (Post-Processed Kinematic) method using all available GNSS signals (GPS – Global Positioning System, GLONASS – GLObalnaya NAvigatsionnaya Sputnikovaya Sistem, Galileo, Bei-Dou) and seismologically interpreted. The ZAGR station is situated about 9 km to the south-southeast of the earthquake’s epicentre. The analysis showed that the station’s movements, i.e. combined surface and building motion, during the shake was far above the noise level and enabled the assessment of the station’s kinematics: movements in the range of approx. 13 cm in direction north–south (N–S) and approx. 6 cm in direction east–west (E–W). However, movements in the vertical direction were slightly above the noise level. Even though the ZAGR station kinematic behaviour was pronounced, no permanent displacement was identified. The seismological analysis showed that the ZAGR station recorded the onset of the SV-waves on the N–S component, surface waves on the N–S (predominantly Rayleigh waves) and E–W (mainly Love waves) components. The resolution of 1 s of the results of the PPK method have enabled a thorough analysis of the ZAGR station kinematics and pointed out the usefulness of the method in earthquake observations.","PeriodicalId":50419,"journal":{"name":"Geofizika","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47496603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0