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A DIRECT METHOD TO DELIMIT WEIR POOLS 一种直接划分堰池的方法
IF 0.7 Q4 GEOGRAPHY, PHYSICAL Pub Date : 2022-07-26 DOI: 10.21163/gt_2022.172.05
F. Donati
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引用次数: 1
ESTIMATION OF PARTICULATE MATTER LESS THAN 10 MICRONS VOLUME THROUGH VARIOUS FORMATS OF SPATIAL INTERPOLATION METHODS 通过各种形式的空间插值方法估算体积小于10微米的颗粒物
IF 0.7 Q4 GEOGRAPHY, PHYSICAL Pub Date : 2022-07-20 DOI: 10.21163/gt_2022.172.03
Jumpol Itsarawisut, T. Laosuwan
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引用次数: 0
A LOW-COST DRONE MAPPING AND SIMPLE PARTICIPATORY GIS TO SUPPORT THE URBAN FLOOD MODELLING 低成本的无人机测绘和简单的参与式GIS支持城市洪水建模
IF 0.7 Q4 GEOGRAPHY, PHYSICAL Pub Date : 2022-07-20 DOI: 10.21163/gt_2022.172.04
Aditya Saputra, A. Sigit, Y. Priyana, Andy Muhammad Abror, A. Sari, Oky Nursetiyani
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引用次数: 0
EARLY WARNING SYSTEM BASED ON HISTORICAL COASTAL FLOOD EVENTS IN SEMARANG CITY, INDONESIA 基于印尼森马朗市历史海岸洪水事件的预警系统
IF 0.7 Q4 GEOGRAPHY, PHYSICAL Pub Date : 2022-07-16 DOI: 10.21163/gt_2022.172.02
Fitriana Nur Indah Sari, D. Sugianto, Kunarso Kunarso
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引用次数: 0
ESTABLISHING SPATIAL DISTRIBUTIONS OF DROUGHT PHENOMENA ON CULTIVATION SEASONS USING THE SWAT MODEL 利用SWAT模型建立栽培季节干旱现象的空间分布
IF 0.7 Q4 GEOGRAPHY, PHYSICAL Pub Date : 2022-05-31 DOI: 10.21163/gt_2022.172.01
H. Prasanchum, Nutthasit Tumma, Worapong Lohpaisankrit
: Due to global climate change, drought phenomena are becoming longer. As a result, water availability is insufficient to meet demand for agriculture during the cultivation seasons and many areas have affected by drought. These can cause difficulties in water resources management. The main objectives of this study were to establish the spatial distribution of drought phenomena at sub-basin scales in the Lam Khan Chu and Lam Nam Chi Part II watersheds, which is the major headwater of the Chi River Basin, Thailand. The Soil and Water Assessment Tool (SWAT) model was used to synthesize streamflow data at the sub-basins of the watersheds. To estimate drought severity, the Streamflow Drought Index (SDI) was computed from the time series of the synthesized streamflow data during 2008 to 2019. The simulated streamflow of the SWAT model was acceptable based on the R 2 , Nash-Sutcliffe Efficiency (NSE) and Percent bias (PBIAS) reaching good levels in both calibration and verification. According to the SDI calculation, the most severe drought in the study period was in the year 2016. During January and April of 2016, the affected areas of about 3%, 30%, 14%, 30 and 23% of the study area were identified as none, mild, moderate, severe and extreme droughts, respectively. The integration of the hydrological model and drought index to monitor drought severity in space and time will be a useful tool for assessing drought severity. Moreover, the results can support managers for water resources management.
:由于全球气候变化,干旱现象越来越长。因此,水资源不足以满足耕种季节的农业需求,许多地区受到干旱的影响。这些可能会给水资源管理带来困难。本研究的主要目的是建立Lam Khan Chu和Lam Nam Chi第二部分流域的次流域尺度干旱现象的空间分布,该流域是泰国池河流域的主要源头。土壤和水评估工具(SWAT)模型用于综合流域子流域的流量数据。为了估计干旱严重程度,径流干旱指数(SDI)是根据2008年至2019年期间合成径流数据的时间序列计算得出的。基于R2、Nash-Sutcliffe效率(NSE)和百分比偏差(PBIAS)在校准和验证中均达到良好水平,SWAT模型的模拟流量是可接受的。根据SDI的计算,研究期间最严重的干旱发生在2016年。2016年1月和4月,研究区域约3%、30%、14%、30%和23%的受影响区域分别被确定为无干旱、轻度、中度、重度和极端干旱。将水文模型和干旱指数结合起来,在空间和时间上监测干旱的严重程度,将是评估干旱严重程度的有用工具。此外,研究结果可以支持管理人员进行水资源管理。
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引用次数: 1
3D MODELLING OF BULDINGS AND URBAN AREAS USING GRASSHOPPER AND RHINOCERSOS 使用蚱蜢和犀牛对建筑物和城市区域进行3d建模
IF 0.7 Q4 GEOGRAPHY, PHYSICAL Pub Date : 2022-03-25 DOI: 10.21163/gt_2022.171.13
D. Costantino, Arianna Grimaldi, M. Pepe
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引用次数: 3
COMPARING CHOROPLETH AND GRADUATED SYMBOLS: HOW DIFFERENT MAP TYPES AFFECT PUBLIC UNDERSTANDING IN COVID-19 MAP READING IN BADUNG REGENCY, BALI, INDONESIA 比较等值线和刻度符号:不同地图类型如何影响印度尼西亚巴厘巴东县公众对COVID-19地图阅读的理解
IF 0.7 Q4 GEOGRAPHY, PHYSICAL Pub Date : 2022-03-24 DOI: 10.21163/gt_2022.171.12
Tri Tanami Sukraini, I. M. A. Yasa, P. Wiguna
Information on COVID-19 is vital in protecting the entire community. As the diffusion pattern changes rapidly over time, originally simple data must be presented differently to provide more representative and quickly readable information. Relevant data are now offered in maps to support the public dissemination of COVID-19 information, with Choropleth and Graduated Symbols being the most common map types. This research was the first to analyze community’s map reading skills, particularly in interpreting or understanding Indonesia’s COVID-19 case distribution portrayed on the map. To test both map types, an online questionnaire was sent to respondents selected by random sampling from people living in Badung Regency. Then, they were given 11 tasks, namely to identify, find extreme values, differentiate, retrieve values, compare, interpret, categorize, group, sort, associate, and locate information contents on both maps. Then, chi-squared, Cramer's V, and Mann-Whitney U tests were conducted to statistically analyze three aspects: accuracy, time, and level of difficulty. The results showed that the choropleth map was easier to read than the graduated symbols. Furthermore, the null hypothesis (H0) was rejected, which means there is a correlation between map type and community’s ability to read and understand maps. © 2022, Asociatia Geographia Technica. All rights reserved.
关于新冠肺炎的信息对于保护整个社区至关重要。随着扩散模式随着时间的推移而快速变化,必须以不同的方式呈现最初简单的数据,以提供更具代表性和快速可读的信息。现在地图中提供了相关数据,以支持新冠肺炎信息的公开传播,Choropleth和Graded Symbols是最常见的地图类型。这项研究首次分析了社区的地图阅读技能,特别是在解释或理解地图上描绘的印度尼西亚新冠肺炎病例分布方面。为了测试这两种地图类型,向从巴东县居民中随机抽样选出的受访者发送了一份在线问卷。然后,他们被赋予了11项任务,即识别、找到极值、区分、检索值、比较、解释、分类、分组、排序、关联和定位两张地图上的信息内容。然后,进行卡方检验、Cramer V检验和Mann-Whitney U检验,从准确性、时间和难度三个方面进行统计分析。结果表明,choropleth图比刻度符号更容易阅读。此外,零假设(H0)被拒绝,这意味着地图类型与社区阅读和理解地图的能力之间存在相关性。©2022,地理技术协会。保留所有权利。
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引用次数: 2
SPATIAL VARIATION OF NO2 LEVELS DURING THE COVID-19 PANDEMIC IN THE BALI TOURISM AREA 新冠肺炎疫情期间巴厘旅游区NO2水平的空间变化
IF 0.7 Q4 GEOGRAPHY, PHYSICAL Pub Date : 2022-03-23 DOI: 10.21163/gt_2022.171.11
I. Sunarta, M. Saifulloh
NO2 levels that exceed quality standards will negatively impact the environment and human health. The purpose of this study was to determine changes in the content of NO2 temporally. The method used is descriptive quantitative, with data analysis using Geographic Information Systems (GIS) and remote sensing data extraction using Google Earth Engine (GEE). The remote sensing data used is Sentinel 5p – TROPOMI whose sensors have the ability to detect air pollution. The results of this study indicate the occurrence of different variations during the Covid-19 Pandemic in the Bali Tourism Area, decreasing or increasing NO2 levels. The decrease in NO2 levels in the air is due to reduced human activities outside the home due to the implementation of the Indonesian Government's policies in the form of Large-Scale Restrictions, Work From Home (WFH), and the religious traditions of Hindus in Bali (Nyepi Day on March 25, 2020). NO2 levels increase again after a long holiday in Indonesia on November-December 2020, due to the large number of tourists visiting Bali Province. The arrival of these tourists increases human activities around the tourism area, such as opening hotels, restaurants, and means of land, sea, and air transportation. Tourism areas tend to have high building density and population. Thus, making green open space low. Whereas green open space is very useful in absorbing air pollution, it is recommended to add green open space or revegetation in every hotel building to maintain good air quality. © 2022, Asociatia Geographia Technica. All rights reserved.
超过质量标准的二氧化氮水平将对环境和人类健康产生负面影响。本研究的目的是确定NO2含量的时间变化。使用的方法是描述性定量的,使用地理信息系统(GIS)进行数据分析,使用谷歌地球引擎(GEE)进行遥感数据提取。使用的遥感数据是Sentinel 5p - TROPOMI,其传感器具有检测空气污染的能力。研究结果表明,新冠肺炎疫情期间,巴厘岛旅游区NO2水平出现不同程度的变化,有降低的趋势,也有升高的趋势。空气中二氧化氮水平的下降是由于印度尼西亚政府实施了大规模限制、在家工作(WFH)等政策,以及巴厘岛印度教徒的宗教传统(2020年3月25日为奈皮日),减少了家庭以外的人类活动。在2020年11月至12月的印度尼西亚长假之后,由于大量游客访问巴厘岛,二氧化氮水平再次上升。这些游客的到来增加了旅游区周围的人类活动,如开设酒店、餐馆,以及陆地、海洋和空中交通工具。旅游区往往有较高的建筑密度和人口。因此,使绿色开放空间低。鉴于绿色开放空间对吸收空气污染非常有用,建议在每栋酒店建筑中增加绿色开放空间或植被,以保持良好的空气质量。©2022,意大利地理技术协会。版权所有。
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引用次数: 8
PHYSICAL DRIVERS OF THE 2013 MARINE HEATWAVE IN THE SEAS OF THE SOUTHERN JAVA-NUSA TENGGARA 2013年爪哇南部海域海洋热浪的物理驱动因素
IF 0.7 Q4 GEOGRAPHY, PHYSICAL Pub Date : 2022-03-22 DOI: 10.21163/gt_2022.171.10
T. Maulida, A. Wirasatriya, D. Ismunarti, A. Puryajati
Marine heatwave (MHW) is an extreme phenomenon of warm sea surface temperature anomaly that has a destructive impact on the marine ecosystem and organisms. This phenomenon increases every year in duration, frequency, and area due to the global warming. Almost all of the world's oceans have experienced MHW, including in the seas of the southern Java-Nusa Tenggara. The lack of detailed research in this area motivated us to analyze MHW drivers. MHW was identified with the 99th percentile method and duration of ≥ 5 days as a threshold by using blended product of SST data. In 2013, an MHW event was identified in the seas of the southern Java-Nusa Tenggara. This MHW lasts for 37 days, from 8 June to 14 July. The maximum (mean) intensity of sea surface temperature anomaly reaches 2.60C (1.83C) above climatology with an average area of 36.53 × 10 km. Locally, we found that probably the positive downward shortwave radiation affected this anomaly. Furthermore, a remote process of the propagation of downwelling Kelvin wave during negative Indian Ocean Dipole may also affect this anomaly. The strong westerly wind along the equatorial Indian ocean forms downwelling Kelvin wave that propagates to the southern Java-Nusa Tenggara increasing SST in this area. Key-words: Marine heatwave, Extreme Sea surface temperature, Downwelling Kelvin wave, Remote Sensing, South Java-Nusa Tenggara
海洋热浪(MHW)是一种温暖海面温度异常的极端现象,对海洋生态系统和生物具有破坏性影响。由于全球变暖,这种现象的持续时间、频率和面积每年都在增加。世界上几乎所有的海洋都经历过MHW,包括爪哇岛南部的努沙登加拉海域。缺乏这方面的详细研究促使我们分析MHW驱动因素。MHW采用第99百分位法确定,持续时间≥5天作为阈值,使用SST数据的混合乘积。2013年,在爪哇岛南部的努沙登加拉海域发现了MHW事件。该MHW为期37天,从6月8日至7月14日。海面温度异常的最大(平均)强度达到气候学以上2.60C(1.83C),平均面积为36.53×10km。此外,在负印度洋偶极子期间,下流开尔文波传播的远程过程也可能影响这种异常。沿赤道印度洋的强烈西风形成向下流的开尔文波,传播到爪哇岛南部的努沙登加拉,增加了该地区的SST。关键词:海洋热浪、极端海面温度、下涌开尔文波、遥感、南爪哇岛努沙登加拉
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引用次数: 2
APPLICATION OF 3S TECHNOLOGY IN DISASTER RISK RESEARCH IN THE NORTHERN MOUNTAINOUS REGION OF VIETNAM 3s技术在越南北部山区灾害风险研究中的应用
IF 0.7 Q4 GEOGRAPHY, PHYSICAL Pub Date : 2022-03-22 DOI: 10.21163/gt_2022.171.09
D. Nguyen, Q. Kieu
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引用次数: 1
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Geographia Technica
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