Erosion Issues Research Articles

ANALISIS PENERAPAN CONTROLLED FOREIGN COMPANY RULES DALAM MENGATASI BASE EROSION AND PROFIT SHIFTING DI INDONESIA

One cause for the inability to achieve the expected tax revenue target for some last years was the practice of tax avoidance. One form of tax avoidance is the utilization of Controlled Foreign Company (CFC) to defer the recognition of income from overseas over WPDN capital to be taxed in the country. This practice is also faced by many other countries in the world. The issue of the Base Erosion and Profit Shifting (BEPS) has been of concern to developed and developing countries. G20 countries cooperate with OECD to form a BEPS Project to formulate measures to address these BEPS. Indonesia as one of the Associate Members of the Project BEPS has a position that is parallel to the other OECD countries and participates in implementing the BEPS results. BEPS Project has resulted in BEPS Action Plans which one of them is Action 3: Strengthening CFC Rules. Action 3 will provide recommendations to the domestic law related to the design of CFC Rules. Until now, related to Action 3, BEPS Project has issued a Public Discussion Draft Action 3: Strengthening CFC Rules. This draft is divided into seven "building blocks" required for CFC Rules to be effective. The aim of this study is to analyze the effectiveness of CFC Rules in Indonesia, whether it is sufficient to prevent BEPS. After that, we can determine what steps should be taken by Indonesian tax authorities to strengthen the CFC Rules in Indonesia based on seven dimensions of building blocks. The conclusions of this study are (1) CFC Rules in Indonesia as a whole have not been able to overcome BEPS; and (2) When compared with the recommendations of the Discussion Draft Action Plan 3, CFC Rules Indonesia needs to be improved. However, the necessary improvements should be adjusted to match the needs and characteristics of Indonesia.

The Investigation of Sinop Coastal Area Pattern in Terms of Coastal Management

Sinop is a province located at the Black Sea region and it is rich in scenic beauty and cultural values and has potential touristic resources. Moreover, it is one of the most prominent port towns in the Black Sea region. The area, which can be qualified as the most important and prominent image region of the city, comprise the coastal land use line of the province. However, the city fails to utilize this advantage. The master plan of the city has substantially changed through the years. The present study aimed to determine the changes in the master plans of the city through the years, the distribution of the coastal land use areas and changes in the utilization of the coastal areas through the years. Evaluating the current administrative competence/constraints in the coastal area with respect to the data obtained in the study is also among the goals of the study. Furthermore, by taking the impact of environmental factors on the ratio of the land use areas into consideration, examining these data in terms of coastal management planning to create habitats that better suit the vital requirements is another prospect of the study. In addition, the evaluation of some coastal area-associated issues including the extent of the effect of current erosion issues on the development of the coastal area was also included in the study. The percentage of the current functional coastal areas in the province, the distribution of the number of building floors and the changes in these data by years were also investigated. For these evaluations, zoning revisions and 1/2000, 1/5000 and 1/10000 maps were examined to determine the coastal area zoning changes and filling areas. Fieldworks were carried out in the coastal area of the city to determine and observe the state of the area. The data was collected by contacting relevant institutions and organizations and carrying out fieldworks. Considering the data obtained in the study, measures to remedy the zoning deficiencies in the coastal area and the city center were proposed. The obtained data and evaluations obtained revealed that the province is in need of new and sustainable planning and there is a necessity to include implementations that are based on integrated coastal area management principals.

Plantation Soilscapes: Initial and Cumulative Impacts of Colonial Agriculture in Antigua, West Indies

ABSTRACTThis paper examines physical, chemical, and biological properties of soils and sediments from landforms in eastern Antigua, West Indies, to better understand the long-term consequences of colonial plantation agriculture for soil health. Plantation farming played a central role in the history of Caribbean societies, economies, and environments since the seventeenth century. In Antigua, the entire island was variably dedicated to agricultural pursuits (mostly sugarcane monoculture) from the mid-1600s until independence from the United Kingdom in 1981, when most commercial cultivation ceased. Today’s soilscapes are highly degraded, although it is unknown what the role of the island’s plantation legacy has played in this process. Our research combines geoarchaeological survey and sampling, sediment core analysis, and historical archival research to model the initial and cumulative impacts of the plantation industry on the island. We focus on the region surrounding Betty’s Hope, the island’s first large-scale sugarcane plantation in operation from 1674 to 1944. We find that current erosion and degradation issues experienced by today’s farmers are not attributable to intensive plantation farming alone, but rather are part of a complex mosaic of human-environmental interactions that include abandonment of engineered landscapes.

Introduction: North American East Coast Shell Middens

Abstract Archaeological shell bearing deposits, or shell middens, are ubiquitous along the Atlantic Seaboard, and have been the focus of archaeological interest for more than a century. This volume presents recent research on shell-bearing deposits from the Gulf of St. Lawrence to Chesapeake Bay. The papers cover topics ranging from fundamental subsistence changes as reflected in archaeofaunas, to the role of select species in hunting practices and diets, to methodological issues of shell midden excavation and interpretation, to aspects of ideation and ontology as reflected in features and assemblages. A consistent theme among the papers is the issue of coastal erosion caused by sea-level rise and climate change. This looming crisis has made the comprehensive investigation of these deposits more important than ever before.

The imperative for regenerative agriculture.

A review is made of the current state of agriculture, emphasising issues of soil erosion and dependence on fossil fuels, in regard to achieving food security for a relentlessly enlarging global population. Soil has been described as "the fragile, living skin of the Earth", and yet both its aliveness and fragility have all too often been ignored in the expansion of agriculture across the face of the globe. Since it is a pivotal component in a global nexus of soil-water-air-energy, how we treat the soil can impact massively on climate change - with either beneficial or detrimental consequences, depending on whether the soil is preserved or degraded. Regenerative agriculture has at its core the intention to improve the health of soil or to restore highly degraded soil, which symbiotically enhances the quality of water, vegetation and land-productivity. By using methods of regenerative agriculture, it is possible not only to increase the amount of soil organic carbon (SOC) in existing soils, but to build new soil. This has the effect of drawing down carbon from the atmosphere, while simultaneously improving soil structure and soil health, soil fertility and crop yields, water retention and aquifer recharge - thus ameliorating both flooding and drought, and also the erosion of further soil, since runoff is reduced. Since food production on a more local scale is found to preserve the soil and its quality, urban food production should be seen as a significant potential contributor to regenerative agriculture in the future, so long as the methods employed are themselves 'regenerative'. If localisation is to become a dominant strategy for dealing with a vastly reduced use of fossil fuels, and preserving soil quality - with increased food production in towns and cities - it will be necessary to incorporate integrated ('systems') design approaches such as permaculture and the circular economy (which minimise and repurpose 'waste') within the existing urban infrastructure. In addition to growing food in urban space, such actions as draught-proofing and thermally insulating existing building stock, and living/ working on a more local scale, would serve well to cut our overall energy consumption. In order to curb our use of fossil fuels, methods for reducing overall energy use must be considered at least equally important to expanding low-carbon energy production. In synopsis, it is clear that only by moving from the current linear, 'take, make, dispose (waste-creation)' model for resource-consumption, to the systemic, circular alternative of 'reduce, reuse, recycle, regenerate', are we likely to meet demands for future generations.

Physics of soil erosion at the microscale

We focus here on the major and still relevant issue of soil erosion by fluid flows, and more specifically on the determination of both a critical threshold for erosion occurrence and a kinetics that specifies the rate of eroded matter entrainment. A state-of-the-art is first proposed with a critical view on the most commonly used methods and erosion models. It is then discussed an alternative strategy, promoting the use of model materials that allow systematic parametric investigations with the purpose of identifying more precisely the local mechanisms responsible for soil particle erosion and ultimately quantifying both critical onsets and kinetics, possibly through existing or novel empirical erosion laws. Finally, we present and discuss several examples following this methodology, implemented either by means of experiments or numerical simulations, and coupling erosion tests in several particular hydrodynamical configurations with wisely selected mechanical tests.

Simulation of land use scenarios in the Camboriú River Basin using the SWAT model

ABSTRACT Changes in the Earth’s landscape have been the focus of much environmental research. In this context, hydrological models stand out as tools for several assessments. This study aimed to use the Soil and Water Assessment Tool (SWAT) hydrological model to simulate the impact of changes in land use in the Camboriú River Watershed in the years 1957, 1978, and 2012. The results indicated that the SWAT model was efficient in simulating water flow and sediment transport processes. Thus, it was possible to evaluate the impact of different land use scenarios on water and sediment yield in the catchment. The changes in land use caused significant changes in the hydro-sedimentological dynamic. Regarding flow, the effects of land use changes were more pronounced at both ends of the curve representing duration of flow. The worst scenario was identified for the year 2012, which saw the highest peak discharges during flood events and lowest flows during the dry season. Concerning soil erosion, the highest values were identified for sub-basins that were predominantly covered by rice paddies and pastures; this was attributed mainly to surface runoff and changes in land use (represented by C-USLE). Overall, the Camboriú River Basin did not experience severe soil erosion issues; however, it was found that changes in land use related to soil and climate characteristics may increase soil degradation, especially in years with high precipitation levels.

Perdas de Solo, Razão de Perdas de Solo e Fator Cobertura e Manejo da Cultura de Cana-de-Açúcar: Primeira Aproximação

O objetivo desse artigo é discutir a questão da erosão em áreas de cultivo de cana de açúcar. Assim, foram determinadas as perdas de solo, a razão de perdas de solo (RPS) e os valores do fator cobertura e manejo (fator C) da Equação Universal de Perdas de solo (Universal Soil Loss Equation - USLE) para a cultura de cana-de-açúcar, cultivada em solos arenosos e argilosos e em diferentes condições de relevo e de manejo. Para obter dados visando atingir tal objetivo, foram utilizadas técnicas experimentais, com a instalação de 8 parcelas de monitoramento de erosão hídrica do solo (2x10 metros). Durante um ano agrícola foram coletadas amostras de água e sedimento, sendo realizada a quantificação do material erodido. Nas parcelas instaladas em Cambissolos Háplicos de textura areia franca/franco arenosa, declividades de 12% e 15% e cultivadas com cana planta sob preparo convencional, as perdas foram de 49 e 84 t-1 ha-1 ano respectivamente e o fator C médio foi de 0,424. Nas parcelas instaladas em Argissolo Vermelho Amarelo, com declive de 5% e em Cambissolo Háplico, com declive de 11%, ambos de textura argilosa e cultivados com cana soca de 3° corte sob plantio direto, as perdas foram de 0,797 e 3,684 t-1 ha-1 ano e o fator C de 0,234 e 0,130 respectivamente. Os valores de RPS variaram de 0,393 a 0,521 (do plantio até 3 meses) e de 0,051 a 0,449 (período de 10 a 12 meses) nos solos arenosos, e de 0,081 a 1,109 (plantio até 3 meses) e de 0,041 a 0,069 (10 a 12 meses) nos solos argilosos. Os diferentes tipos de solos, relevo e manejo presentes nas parcelas resultaram em valores de perdas, RPS e Fator C discrepantes. Neste sentido, tem-se a necessidade de maior atenção à variabilidade e à sensibilidade destes parâmetros na modelagem de perdas de solo por erosão hídrica em áreas cultivadas com cana-de-açúcar.

Всероссийская научная конференция с международным участием и XXXI пленарное межвузовское координационное совещание «Современные проблемы эрозионных, русловых и устьевых процессов»

Всероссийская научная конференция с международным участием и XXXI пленарное межвузовское координационное совещание «Современные проблемы эрозионных, русловых и устьевых процессов»

Forces acting on particles in a Pelton bucket and similarity considerations for erosion

High sediment transport rates cause severe erosion issues in hydropower plants leading to interruptions in power generation, decrease in efficiency and shutdown for repair and maintenance. For Pelton turbines operating at high head, the issue of erosion is severe, especially in components like buckets, nozzle rings and needles. Goal of the study is to develop erosion focussed guidelines for both designing as well as operating hydropower plants with Pelton runners. In this study, the flow of sediment inside a Pelton bucket with respect to forces acting on solid particles is analysed with an analytical approach by considering different dynamic forces originating from the rotation of the turbine, the curvature of the buckets, and the Coriolis effect. Further, the path of sediment particles and its effect on erosion phenomena are analysed based on the process of separation of different sized sediment particles from streamlines.The data relating to head, power, discharge, number of jet and efficiency of 250 hydropower plants installed all over the world were analysed in this study to find the major factors related to erosion in Pelton turbine bucket. From analysis of different force ratios, it is found that an increase of D/B, i.e. the ratio of pitch circle diameter and bucket width, and/or decrease of specific speed (nq) enhances erosion. As the erosion process depends significantly on nondimensional parameters D/B and nq, these are considered as similarity measures for scaling of the erosion process in the Pelton buckets of various sizes.

The role of inter-particle collisions on elbow erosion

Erosion due to particle impingement, which can occur in a variety of practical cases, is often the key factor in pipeline failure. Parts such as elbows, for instance, are particularly prone to erosion issues. In this work, the Unsteady Reynolds Averaged Navier–Stokes (URANS) equations are combined with a stochastic Lagrangian particle tracking scheme considering all relevant elementary processes (drag and lift forces, particle rotation, inter-particle collisions, particle-wall interactions, coupling between phases) to numerically predict the erosion phenomenon on a 90° elbow pipe. After a detailed validation of the erosion model based on the experimental data of Solnordal et al. (2015), several cases regarding the wall roughness and static and dynamic coefficients of friction are analysed to elucidate the nature of the erosive process. For such analysis, more fundamental variables related to particle-wall interactions (impact velocity, impact angle, impact frequency) were used to scrutinize the basic erosion mechanisms. Finally, to prove the importance of inter-particle collision on elbow erosion, different mass loadings are additionally simulated. Especially for the high mass loading cases, interesting results about the role of the inter-particle collisions on elbow erosion are enlightened.

Hubungan Konservasi Tanah dan Air Dengan Komoditas yang Diusahakan, Struktur Pendapatan Serta Karakteristik Rumah Tangga (Kasus DAS Cimanuk dan Citanduy)

Sustainable agricultural development cannot be separated from the issue of soil erosion. This research shows that soil erosion is associated with sources of income of the households in the area, commodities being cultivated and demographic characteristics of the household. The higher the proportion of household income from agricultural activities, particularly dryland farming, the higher the erosion in the area. In general, this research suggests that an integrated and comprehensive policy on both commodity and natural resource management and agricultural and non-agricultural, Sectors development is required to solve soil and water conservation problems.

Influence of institutional access and social capital on adaptation decision: Empirical evidence from hazard-prone rural households in Bangladesh

An understanding of the factors that shape resource-poor households' heterogeneity in adopting adaptation strategies is crucial in developing adaptation policies. This research examines the determinants of household adaptation choices and the barriers to adaptation. It also focuses on the influence of institutional access and social capital on adaptation choice as a way forward to support and sustain local adaptation process by using the survey data of 380 hazards-prone vulnerable households in Bangladesh. The results reveal that households are implementing adaptation strategies such as diversifying crops, tree plantation (adopted by large and medium farmers), and homestead gardening and migration (adopted by small and landless farmers). Barriers to adaptation are observed heterogeneously among the farming groups where access to credit and lack of information on appropriate adaptation strategies are among the important barriers to adaptation. The model results indicate that the choice of adaptation strategies is significantly influenced by social capital and access to institutions. To support adaptation locally and to enhance vulnerable households' resilience to better cope with riverbank erosion and other climatic change issues, interventions by the government through planned adaptation, such as access to institutions and credit facilities, and a package of technologies through agro-ecological based research are required.

Effect of geomembrane colour and cover soil on solar-driven down-slope bentonite erosion from a GCL

The surface temperature of an exposed composite liner consisting of a geosynthetic clay liner (GCL) covered by a black geomembrane (GMB) can routinely exceed 60°C during summer solar exposure before falling to ambient air temperature at night. Observations at the Queen's University Environmental Liner Test Site (QUELTS) have recently shown that the evaporation and cooling of the air space at the GMB–GCL interface causes condensed water to form underneath the GMB. These water drops flow down-slope until they are released onto the top surface of the GCL at points of contact, seams, or changes in geomembrane curvature. An unforeseen consequence of this solar-driven generation and release of distilled water onto the GCL was discovered to be down-slope erosion of bentonite from the GCL. The objective of the current study was to repeat the QUELTS field exposure experiment to confirm whether the immediate covering of the GMB will supress the mechanism of down-slope bentonite erosion through the elimination of the air gap at the GMB–GCL interface and a reduction in thermal cycling. Further, this study examined whether the use of a white-coloured GMB can reduce the time to onset of erosion if immediate cover is not possible. Results confirm that no erosion occurred on the composite liner test section covered by 0.3 m of gravel after the 15 month duration of the study. In contrast, erosion was observed to occur on the exposed white GMB section, but at a slower rate than that observed on the exposed black GMB section. The timely placement of cover soil on the composite liner as per manufacturers' recommendations is therefore the most effective strategy to avoid the issue of down-slope bentonite erosion.

Reducing bend erosion with a twisted tape insert

Due to the ongoing problem related to erosion caused by the impingement of solid particles in many engineering fields, parts such elbows, for instance, are particularly prone to erosion issues. In this work, the insertion of a twisted tape at different positions upstream of a bend is investigated numerically with the intent of reducing the elbow erosion. To ensure the reliability of the numerical calculations, experimental data were used to validate the CFD model for the standard elbow. Subsequently, simulations considering one, two and four-way coupling were evaluated for both the standard and the twisted tape-equipped elbows. Simulations were run to evaluate the average particle impact angle, impact frequency and impact velocity and the penetration ratio for each geometry. It was found that the swirling motion imparted to the particles by the twisted tape reduces the maximum penetration ratio in the bend. Another important finding is that the farther the insert is placed upstream of the elbow, the lower the erosion in the elbow, although the tape itself becomes more prone to erosion. In general, it was noticed that the fluid-particle and particle-particle interactions are very important and cannot be neglected. Consequently, depending on the mass loading and geometry configuration, elbow erosion can be dramatically reduced.

Simulation of field-measured soil loss in Mediterranean hilly areas (Chianti, Italy) with RUSLE

The issue of soil erosion is considered highly important by local administrators of the Chianti region. Thus, a methodology for predicting the long-term average annual soil loss, by using the Revised Universal Soil Loss Equation (RUSLE) in a Geographical Information System framework was developed and assessed. The rainfall and runoff erosivity factor was calculated using 35 raingauges with an acquisition interval of 15min in the period from 1996 to 2010. The soil erodibility factor was estimated using a soil map at a scale of 1:50,000. The topographic factor was calculated from a 10m digital elevation model. Moreover, a methodology was proposed that took into account the vineyard row direction and slope. Soil loss field data (566 field sites) were measured over 6years using a topographical approach, and used to validate the model results. The statistical indices for the evaluation of the model were, respectively, the mean percent error (M%E), −0.1%, the ratio of the RMSE to the standard deviation of the observations (RSR), 23.7%; and the Nash–Sutcliffe coefficient (NCS), 0.9. Statistics indicated good predictions of long-term average annual soil losses at a field scale. The average annual soil loss for the study area was predicted up to 6.4t·ha−1·y−1. Approximately 13% of the study area was classified as high erosion (≥22t·ha−1·y−1). The identification of areas with the greatest erosion risk supports the possibility of using the model for land-use and land-management planning purposes. Moreover, this assists in the identification of those areas towards which conservation measures can be directed.

Coastline evolution of Portuguese low-lying sandy coast in the last 50 years: an integrated approach

Abstract. Regional/national-scale information on coastline rates of change and trends is extremely valuable, but these studies are scarce. A widely accepted standardized methodology for analysing long-term coastline change has been difficult to achieve, but it is essential to conduct an integrated and holistic approach to coastline evolution and hence support coastal management actions. Additionally, databases providing knowledge on coastline evolution are of key importance to support both coastal management experts and users.The main objective of this work is to present the first systematic, national-scale and consistent long-term coastline evolution data of Portuguese mainland low-lying sandy coasts.The methodology used quantifies coastline evolution using a unique and robust coastline indicator (the foredune toe), which is independent of short-term changes.The dataset presented comprises (1) two polyline sets, mapping the 1958 and 2010 sandy beach–dune system coastline, both optimized for working at 1 : 50 000 scale or smaller; (2) one polyline set representing long-term change rates between 1958 and 2010, each estimated at 250 m; and (3) a table with minimum, maximum and mean of evolution rates for sandy beach–dune system coastline. All science data produced here are openly accessible at https://doi.pangaea.de/10.1594/PANGAEA.859136 and can be used in other studies.Results show beach erosion as the dominant trend, with a mean change rate of −0.24 ± 0.01 m year−1 for all mainland Portuguese beach–dune systems. Although erosion is dominant, this evolution is variable in signal and magnitude in different coastal sediment cells and also within each cell. The most relevant beach erosion issues were found in the coastal stretches of Espinho–Torreira and Costa Nova–Praia de Mira, Cova da Gala–Leirosa, and Cova do Vapor–Costa da Caparica. The coastal segments Minho River–Nazaré and Costa da Caparica adjacent to the coast exhibit a history of major human interventions interfering with the coastal system, many of which originated and maintained a sediment deficit. In contrast, the coastal segments Troia–Sines and Sines–Cape S. Vicente have experienced less intervention and show stable or moderate accretion behaviour.

Deformation estimation of an earth dam and its relation with local earthquakes, by exploiting multitemporal synthetic aperture radar interferometry: Mornos dam case (Central Greece)

Monitoring dam performance is a critical parameter in maintaining a safe dam. Safety concerns include seepage, internal erosion, and seismic issues in the case that the dam is located in high seismic hazard areas. Seismic considerations for dam safety among others includes the expected dam’s performance during seismic events. The scope of this research work concerns the capability to record potential deformation on the Mornos earth dam (central Greece) induced by major earthquake events that occurred in the broader area. For this purpose, a hybrid interferometry synthetic aperture radar (InSAR) method was applied using elements of conventional differential InSAR, short baseline interferometry approaches, and persistent scatterers interferometry. A time series of ascending and descending acquisitions of active microwave instrument/ERS-1 and 2 and advanced synthetic aperture radar/ENVISAT scenes covering the period from 1993 to 2010 were interferometrically combined. Five very strong seismic events with epicenters close to the dam, at the same period, were considered as potential sources of deformation. The lake’s water surface elevation was also considered as an additional factor of induced deformation. Results show a maximum deformation rate of ∼10 cm along the line of sight for the whole period. Although the observed deformation appears to be due to changes in water level following a particular pattern, this is interrupted over time, and these interruptions coincide in time with specific seismic events.

Two-Meter Temperature and Precipitation from Atmospheric Reanalysis Evaluated for Alaska

AbstractAlaska is experiencing effects of global climate change that are due, in large part, to the positive feedback mechanisms associated with polar amplification. The major risk factors include loss of sea ice and glaciers, thawing permafrost, increased wildfires, and ocean acidification. Reanalyses, integral to understanding mechanisms of Alaska’s past climate and to helping to calibrate modeling efforts, are based on the output of weather forecast models that assimilate observations. This study evaluates temperature and precipitation from five reanalyses at monthly and daily time scales for the period 1979–2009. Monthly data are evaluated spatially at grid points and for six climate zones in Alaska. In addition, daily maximum temperature, minimum temperature, and precipitation from reanalyses are compared with meteorological-station data at six locations. The reanalyses evaluated in this study include the NCEP–NCAR reanalysis (R1), North American Regional Reanalysis (NARR), Climate Forecast System Reanalysis (CFSR), ERA-Interim, and the Modern-Era Retrospective Analysis for Research and Applications (MERRA). Maps of seasonal bias and standard deviation, constructed from monthly data, show how the reanalyses agree with observations spatially. Cross correlations between the monthly gridded and daily station time series are computed to provide a measure of confidence that data users can assume when selecting reanalysis data in a region without many surface observations. A review of natural hazards in Alaska indicates that MERRA is the top reanalysis for wildfire and interior-flooding applications. CFSR is the recommended reanalysis for North Slope coastal erosion issues and, along with ERA-Interim, for heavy precipitation in southeastern Alaska.

Combining coastal geoscience mapping and photogrammetric surveying in maritime environments (Northwestern Iberian Peninsula): focus on methodology

Digital photogrammetry and GIS-based mapping are increasingly recognised as powerful tools in littoral issues. This paper considers the interoperability framework for high-resolution imagery acquisition and the development of coastal geoscience maps. The layered system architecture of the cartographic methodology is also explained. Moreover, it highlights a new approach to assessing heterogeneous geologic, geomorphological and maritime environments. The main goal of the present study was to test a new concept for photogrammetric images in order to assist modelling techniques, spatial analysis and coastal conceptual models. This approach proposes a methodological approach to coastal zone monitoring and to maritime forcing conditions evaluating. This approach will allow: (1) the acquisition of a large archive of high-resolution imagery; (2) the development of a coastal database including the entire data field and in situ assessments; (3) the study of coastal dynamics and shoreline evolution; (4) the assessment of the rock platforms and hydraulic structures; (5) the production of coastal geosciences maps. An integrated coastal geoscience and engineering methodology was outlined in NW of Iberian Peninsula (South Galicia and North/Central Portugal regions). This paper reports on the increased knowledge of the studied regions, providing essential data concerning coastal geo-morphodynamics. The overall assessment revealed additional evidence of erosion issues, which contributes to a better understanding of the hydraulic conditions. The main results are presented in regional coastal geoscience maps and local approach-outputs that could help government, local authorities and stakeholders to develop coastal management plans and to recommend strategies.