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1

Geographic Information System for Mapping Coastal Inundation Impact to the Sustainability of Agriculture Sector in Pekalongan City, Indonesia

Suharini Erni, Pratiwi Elok Surya, Hanafi Fahrudin

Ecological Engineering & Environmental Technology

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2023

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Vol. 24, iss. 3

114--119

EN

Coastal inundation that is getting farther inland year by year has given a serious problem to the sustainability of farming activities in Pekalongan, but it has rarely been exposed more detail to the public. The aim of this research is to investigate the present effects of seawater inundation to the agriculture sector in Pekalongan coastal area. We focused on the study of coastal inundation dynamics, agriculture area reduction and rice production. Time series remote sensing imageries from google earth satellite were used to analyze the seawater run up between 2003 and 2018. This result revealed that the farthest distance of the inundation in 2018 reached 4.4 kilometers from the coastline in the west part of the city. For the last fifteen years, saline water has reduced almost 380 ha of farm land in the coastal area. That phenomenon has contributed to the rice production lost by almost 173 tons/year during 2003 and 2018. This result has showed a critical condition of agriculture sector in study area, thus some mitigation actions become a necessity thing in order to protect our land as well as food security on the next future.

2

The Risk Mapping of Coastal Flooding Areas Due to Tsunami Wave Run-Up Using DAS Model and its Impact on Nekor Bay (Morocco)

Taher Morad, Mourabit Touafik, El Talibi Hajar, Etebaai Issam, Bourjila Abdelhak, Errahmouni Ali, Lamgharbaj Mastapha

Ecological Engineering & Environmental Technology

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2022

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Vol. 23, iss. 4

136--148

EN

The Al-Hoceima region is threatened by tsunami hazard because of its location in the coastal area of the Mediterranean Sea, besides the shallow seismically active region south of the Alboran Sea. Therefore, the current study presents a novel model to map coastal flooding potential zones due to tsunami wave run-up in Nekor bay using three natural parameters (distance from coastline, altitude and slope) in a geographic information system (GIS) environment. Furthermore, the coastal flooding simulation using 4 scénarios (1, 2, 3, 4m) based on the run-up elevation according to tsunami wave elevation (TWE) literature of the study area is used to confirm the DAS model result, and to estimate the potential impacts. The result of the DAS model revealed that 1 km from the coast to the Nekor plain is the most exposed to the impact of tsunamis generated south of the Alboran Sea. The coastal flooding simulation confirmed the DAS result, and the damage estimation of the urban area and the agriculture was respectively 2 and 98% for run-up 1 m, 3% and 97% for run-up 2m, 4% and 96% for run-up 3m, and for the worst case scenario of 4 m was 3% and 97%. Therefore, the results obtained show that the major potential impact of coastal flooding in Nekor plain is the salinization of agricultural land. Finally, we propose a sustainable solution utilizing a controlled forest along the coast to reduce future tsunami impacts on Nekor bay.

3

The capacity of the Sanna river in conditions of the reliable flow and the control discharges of the weir in Zaklików

Michalec Bogusław

Geomatics, Landmanagement and Landscape

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2021

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no. 1

57--68

EN

The aim of the study was to determine the capacity of a selected section of the Sanna river, designated below the lower site of the weir in Zaklików. The capacity calculations included the conditions of flood water discharge, i.e. the reliable flow and the control flow, determined in accordance with the Regulation of the Minister of the Environment on technical conditions that should be ensured for the hydrotechnical structures and their locations. The paper presents the consequences of changes in the regulations regarding the determination of building type, for which reliable flow and control discharges are determined. These modifications in the regulations have an impact on changes in the determination of the probability value for water discharges related to the analysed weir. The calculation of the capacity of the tested section also took into account its technical condition, specifying the variant of calculations for the lack of maintenance works, i.e. for the current state and for the state after maintenance works, consisting in mowing vegetation on slopes and shaping the surface of river bottom, removing pits and shallows. The results of the calculations of capacity of the measured cross-sections showed that the performance of maintenance works will convey the flow of a Q3% reliable flow in the Sanna river, while the Q1% control flow will not fit into the riverbed and will cause inundation of the adjacent areas.

4

Post event feld observations in the İzmir–Sığacık village for the tsunami of the 30 October 2020 Samos (Greece) Mw 6.9 earthquake

Aksoy M. Ersen

Acta Geophysica

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2021

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Vol. 69, no. 3

1113--1125

EN

The Mw 6.9 Samos earthquake occurred on 30 October 2020 11:51 ofshore of the Samos island, west of the Kuşadası bay in the Aegean Sea. The earthquake caused destruction in villages of Greece and Turkey. The earthquake intensity reached a maximum of VII in İzmir–Bayraklı. A tsunami followed the shock and hit many villages around Samos and the Kuşadası bay. The Sığacık village of Izmir-Turkey sufered heavily from the tsunami. A post-event feld survey in Sığacık has been conducted on 31 October 2020, and measurements of fow depth, run-up and limits of inundation were collected. The tsunami inundated the entire coastal area in Sığacık for at least 200 m inland. The maximum inundation has been observed NE of Sığacık. Sea water reached a distance of 391±2 m. The maximum run-up is measured as 5.3±0.3 m north of Sığacık. This is the highest value for the Samos tsunami measured along the Greek and Turkish coastal areas. The high run-up value is attributed to the elongated geometry of the Sığacık bay, the shallow seafoor, the low and fat land morphology in Sığacık and to the existence of four>70-m-long E–W trending channels. The tsunami left limited amount of clay to sand size sediments forming a layer of less than 2–3 cm in the depression areas in Sığacık. The limited amount of evidence remained from the tsunami of this Mw 6.9 earthquake in Sığacık (a location with signifcant inundation and the highest run-up value) signifes the difculty of palaeo-tsunami surveys for the Aegean Sea region.

5

Inundation controlling practice in urban area: Case study in residential area of Malang, Indonesia

Harisuseno Donny, Bisri Mohammad, Haji Tunggul S.

Journal of Water and Land Development

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2020

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no. 46

112--120

EN

Flood inundation processes in urban areas are primarily affected by artificial factors such as drainage facilities, local alterations of topography and land uses. The objective of this study is to examine the capability of hydrological model SI-MODAS to estimate runoff and investigating the utilization of storage well in controlling runoff in a residential area. The result of the estimated runoff from the hydrological model was compared with the existing capacity of the drainage channel to identify which channel experienced the problem of inundation. The location of inundation was used to determine the location and number of storage well. The results showed that SIMODAS model could be applied in runoff analyses with 8.09% of relative error compared with runoff depth from field measurement. The existing capacity of the channel could not accommodate runoff Q10yr where the inundation discharge was approximately 0.24 m3·s–1 (at outlet point 1) and 0.12 m3·s–1 (at outlet point 2). The inundation problem was overcome by using a combination system between channel normalization (reduce 35% of total inundation discharge) and storage well system (reduce 65% of total inundation discharge). The storage well was designed at 20 locations (at outlet point 1) and 16 locations (at outlet point 2) which each well had a discharge of 0.0058 m3·s–1. The storage well combined with channel normalization could be used as an alternative way to solve inundation problems in a residential area considering the constraint of land space limitation in the urban area.

6

Free water table area monitoring on wetlands using satellite and UAV orthophotomaps - Kampinos National Park case study

Góraj Maciej, Wróblewski Cezary, Ciężkowski Wojciech, Jóźwiak Jacek, Chormański Jarosław

Meteorology Hydrology and Water Management. Research and Operational Applications

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2019

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Vol. 7, Iss. 1

23--30

EN

The surface water table level is a crucial factor for the existence of wetland habitats, and valuable from the point of view of environmental protection. In particular, surface water table in a hydrological year play an important role, affecting the seasonal changes in conditions of the development of species inhabiting a given patch of vegetation. The occurrence of floods often determines the possibility of survival of a given plant community. Information on the seasonal variability of surface waters, and above all the range of seasonal floods, is very important from the point of view of planning protection activities in National Parks in order to preserve wetland habitats. Nowadays, remote sensing data is an important source of spatial information, particularly those characterized by low cost data acquisition and processing. One such source is imagery collected from satellites, along with products freely distributed by the European Space Agency. Satellites of the Sentinel constellation provide multi-spectral optical remote sensing images recorded at visible and infrared wavelengths. Due to the short satellite revisit time of the Sentinel, the images from this satellite constitute a potential source of information for the monitoring of moisture on wetlands with a high temporal resolution. In this study, the authors aim to demonstrate the possibilities associated with the use of satellite images to monitor the range of a free surface water table in the pilot area located within the basin of the Łasica Channel, located in the Kampinos National Park (Poland). The accuracy of the results of the remote sensing transformations will be assessed using high resolution RGB images obtained with the use of unmanned aerial vehicles (UAV) and control points measurements. The maps of free water table has been acquired as an result of ensemble regressors (Random Forest, Extra Trees, Bagging). Regressors has been learned and applied for two sessions. Promising results were obtained indicating the possibility of using the proposed method on a similar scale.

7

Wilgotność elementów i konstrukcji z betonu komórkowego

Rybarczyk Tomasz

Materiały Budowlane

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2019

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nr 2

26--27

8

Extreme Hydrological Phenomena in the Esil River Basin: Genesis, General Patterns of Manifestation

Plekhanov Petr Andreevich, Medeu Nadira Nusupkyzy

Journal of Ecological Engineering

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2019

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Vol. 20, nr 7

187--195

EN

The research subject involves dangerous hydrological phenomena (floods) in the Esil River Basin (Akmola and North Kazakhstan regions). The aim set by the authors was to improve the theoretical knowledge about floods and inundations, in order to contribute to solving the general problem of ensuring the safety of the territories in the Esil Water Management Basin (WMB) against harmful effects of water. In Kazakhstan, floods are caused by almost all known causes in the world: in most of the country – spring floods, the high-intensity rainfall. Additionally, there were cases when floods occurred as a result of dam failures (e.g. in the case of the Kyzylagash village in the Almaty region). Annually, the damage caused by floods throughout Kazakhstan amounts to several tens of billions of tenge. The predicted increase in air temperature and precipitation, coupled with the intensive development of farmland river valleys, will undoubtedly lead to the increase in the frequency and destructive power of floods. Therefore, developing a set of measures to prevent and protect against floods constitutes an urgent task. These measures will significantly reduce the expenses for the liquidation of the flood effects. The data on extreme hydrological phenomena (EHP) in the Esil River basin were collected and systematized. The conditions for the formation of high floods on the rivers of the researched region were studied. Various “typical” scenarios of the formation of dangerous and catastrophic floods were presented. The periods of passage of snow-melt floods (high floods) and other regularities of the intra-annual water regime in the Esil river basin were determined.

9

Błędy projektowe i wykonawcze jako przyczyna zalania kondygnacji piwnicznej budynku mieszkalnego

Hulimka J., Kałuża M.

Izolacje

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2013

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R. 18, nr 2

32-34

10

Zalania zbiorów archiwalnych i bibliotecznych – przygotowanie do katastrof i działania ratunkowe: Część 2. Uwagi praktyczne do działań przy likwidacji skutków katastrof przez zalanie

Zerek B. F.

Przegląd Papierniczy

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2010

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R. 66, nr 9

523-525

11

Zalania zbiorów archiwalnych i bibliotecznych – przygotowanie do katastrof i działania ratunkowe. Część 1

Zerek B. F.

Przegląd Papierniczy

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2010

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R. 66, nr 6

353-356

12

Free surface flow modeling in numerical estimation of flood risk zones: a case study

Szydłowski M., Magnuszewski A.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

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2007

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Vol. 11, No 4

301-313

EN

A case study of potential inundation of Saska Kępa in Warsaw is presented. The flood is a result of a hypothetical breach of a segment of the Vistula river embankment. The inundation's evolution is simulated numerically using a model of shallow water hydrodynamics. The finite volume method is used to solve the mathematical model of the flow. Digital models of the floodplain's relief and land cover, as well as a visualization of the simulation results, are prepared using the Geographical Information System. The computations may be useful in estimations of Warsaw's flood risk zones.

13

Appraisal of tsunami inundation and run-up along the coast of Kanyakumari District, India - GIS analysis

Chandrasekar N., Immanuel J.L., Sahayam J.D., Rajamanickam M., Saravanan S.

Oceanologia

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2007

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No. 49 (3)

397-412

EN

On 26 December 2004, a tsunami severely affected almost all the coastal villages of Kanyakumari District, India. It was one of the worst affected coastal sectors of South India. An attempt has been made here to assess the impact of the tsunami hazard on coastal landforms and the level of inundation using GIS techniques. The areas of inundation were surveyed and mapped by fixing regular transects along the coastal regions. The percentage of inundated area in the total area was estimated. It was found that inundation was higher on low-lying coasts and relatively less on elevated coasts. In some cases, the extent of inundation was a few kilometres in relation to other coasts, but the percentage of inundated area in the total coastal area was high. The extent of inundation along the study area varied from 50 m to 450 m. Inundation was minimal in coastal villages like Kanyakumari, Agastheeswaram, Madhysoodhanapuram and Dharmapuram, but extensive at Colachel. The percentage of inundated area in the total area ranges from 8% (Dharmapuram) to 39% (Colachel). The degree of inundation was controlled by coastal geomorphological features such as sand dunes, cliffs, coastal vegetation, nature and configuration of the beach, not to mention the angle and velocity of the invading tsunami surge.

14

Numerical investigation of flooding of real-topography developed areas following river embankment failure

Szydłowski M., Twaróg B.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

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2006

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Vol. 10, No 3

321-338

EN

The paper concerns numerical simulations of flood wave propagation in an urban area resulting from a river embankment failure. Simulations have been performed to predict and analyze the parameters of flash and catastrophic flow in a developed area with the aim of presenting numerical calculations useful for identification of inundation zones. The shallow water equations were assumed as the mathematical model of free-surface unsteady water flow. A numerical scheme of the finite volume method was applied to solve the model equations and the Roe method used to approximate the mass and momentum fluxes. Two test cases of embankment failure are investigated in the paper. The aim of one experiment is to simulate a flood in a model city area, where a group of buildings representing a simplified urban configuration was introduced. In order to verify the calculations, numerical results were examined against experimental data available from laboratory measurements. An experiment of the model city's flooding event was carried out at the hydraulic laboratory of the Gdansk University of Technology. The other test case concerns flash flood simulation on an embanked developed area of real topography.

15

By istniała kolejne siedem wieków

Wolska K.

Nowoczesne Budownictwo Inżynieryjne

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2006

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Nr 1

15-16

PL

W artykule omówiona zostały zagrożenia wynikające w wyniku przenikania wody do kopalni. Zaprezentowano zastosowane technologie iniekcji otworowej i rurociągowej.

16

Wpływ eksploatacji górniczej kopalń LGOM na warunki wodne rejonu O/ZG "Polkowice -Sieroszowice"

Widawska A., Fiszer J.

Prace Naukowe Instytutu Górnictwa Politechniki Wrocławskiej. Konferencje

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2005

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Vol. 110, nr 42

133-141

PL

Omówiono problem zmian warunków hydrologicznych i hydrogeologicznych w rejonie Polkowice - Sieroszowice w wyniku prowadzonej w tym rejonie eksploatacji górniczej. Poruszono problem powstawania niecek osiadań i związanych z nimi podtopień i zalewisk. Określono zawodnienie w tym rejonie. Wykazano konieczność prognozowania powstawania tych zjawisk, gdyż podtopienia i zalewiska stanowią istotny problem dla mieszkańców tych rejonów.

EN

The issue of hydrological and hydrogeological conditions changes in Polkowice - Sieroszowice area that are caused by copper mining was described in this paper. Formation of subsidence troughs as well as connected with that phenomenon inundations and overflow lands was presented. Water conditions in this area were also described. Necessity of predicting those phenomena was indicated, as both inundations and overflow lands are serious problem for people living in LGOM area.

17

Ogródki działkowe w K ędzierzynie-Koźlu jako przykład rekultywacji hortisoli popowodziowych.

Ledwoń K., Pustelnik J.

Chemia i Inżynieria Ekologiczna

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1999

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Vol. 6, nr 9

885-890

PL

Omówiono skutki powodzi na obszarze gleb ogrodowych w rejonie Kędzierzyna - Koźla. Dokonano charakterystyki gleb, ich składu chemicznego oraz właściwości namułów na terenach zalanych. Okre ślono warunki i zakres zabiegów niezbędnych do tego, aby na zalane tereny można było wprowadzić rośliny.

EN

The effects of inundation on garden soils in Kędzierzyn - Koźle area are discussed. The soils, their chemical constitution and the properties of the aggradate mud in the flooded area are characterized. The conditions and the range of treatments essential for planting the flooded areas are discribed.