Effectivity analysis of the application of TIA (total impervious area) and EIA (effective impevious area) in a micro scale watershed (case study on Sugutamu sub-watershed)

The purpose of this paper is to introduce a geographic information system (GIS)-based decision support tool that assists the user to select not only areas where (retrofit) sustainable drainage systems (SuDS) could be implemented within a large catchment (>100 ha), but also to allow discrimination between suitable SuDS techniques based on their likely feasibility and effectiveness. The tool is applied to a case study catchment within London, UK, with the aim of increasing receiving water quality by reducing combined sewer overflow (CSO) spill frequency and volume. The key benefit of the tool presented is to allow rapid assessment of the retrofit SuDS potential of large catchments. It is not intended to replace detailed site investigations, but may help to direct attention to sites that have the greatest potential for retrofit SuDS implementation. Preliminary InfoWorks CS modelling of ‘global disconnections’ within the case study catchment, e.g. the removal of 50% of the total impervious area, showed that CSO spill volume could be reduced by 55 to 78% during a typical year. Using the disconnection hierarchy developed by the authors, the feasibility of retrofit SuDS deployment within the case study catchment is assessed, and the implications discussed.

Download Full-text

Micro-scale classification of offshore wind energy resource ——A case study of the New Zealand

Journal of Cleaner Production ◽

10.1016/j.jclepro.2019.04.082 ◽

2019 ◽

Vol 226 ◽

pp. 133-141 ◽

Cited By ~ 5

Author(s):

Chong-wei Zheng ◽

Chong-yin Li ◽

Jian-jun Xu

Keyword(s):

New Zealand ◽

Wind Energy ◽

Energy Resource ◽

Offshore Wind ◽

Offshore Wind Energy ◽

Micro Scale ◽

Scale Classification

Download Full-text

Detection of Fronts from Ocean Colour Monitor Images Using Entropic Technique: A Case Study of Meso- and Micro-Scale Chlorophyll Mapping in Bay of Bengal, India

Advances in Remote Sensing ◽

10.4236/ars.2013.22010 ◽

2013 ◽

Vol 02 (02) ◽

pp. 71-76 ◽

Cited By ~ 1

Author(s):

R. Vinuchandran ◽

D. Ramakrishnan

Keyword(s):

Bay Of Bengal ◽

Ocean Colour ◽

Micro Scale

Download Full-text

Importance of terrain attributes in relation to the spatial distribution of soil properties at the micro scale: a case study

Canadian Journal of Soil Science ◽

10.1139/cjss-2017-0128 ◽

2018 ◽

Vol 98 (2) ◽

pp. 292-305 ◽

Cited By ~ 6

Author(s):

Vivekananthan Kokulan ◽

Olalekan Akinremi ◽

Alan Pierre Moulin ◽

Darshani Kumaragamage

Keyword(s):

Spatial Distribution ◽

Soil Properties ◽

Micro Scale ◽

Terrain Attributes

Download Full-text

Understanding permaculturist motivations among residents of the “PermaKulturRaum” in Goettingen, Germany: a qualitative analysis

SN Social Sciences ◽

10.1007/s43545-020-00024-2 ◽

2020 ◽

Vol 1 (1) ◽

Author(s):

Heinrich Petri ◽

Heiko Faust

Keyword(s):

Global Scale ◽

Qualitative Approach ◽

Childhood Experiences ◽

Behavioral Determinants ◽

Individual Level ◽

Micro Scale ◽

The Core ◽

Behavioral Studies ◽

The Individual

AbstractBy using an inductive qualitative approach, investigating the micro scale, that is, the individual level, we conducted a case study on the PermaKulturRaum in Goettingen, Germany—an experimental space for students to explore alternative lifedesigns. On the supposition that only a radical transition can achieve sustainability on a global scale, we identified permaculture as an appropriate method to achieve this. However, permaculture is not widely spread and largely ignored by scientific research. We started a first attempt to understand the underlying motivations of permaculturists. Using behavioral studies as our theoretical framework, we found out that behavioral determinants, like biospheric values, green-identity, and the intention to act green were extraordinarily high and that the core of their pro-environmental behavior is most likely their strong intrinsic motivation. Regarding the PermaKulturRaum, we could formulate following theses: (1) a comprehensive implementation of permacultural aspects requires an urge for an alternative lifedesign, (2) a radical lifedesign attracts primarily like-minded people, which creates isolated spaces, (3) early childhood experiences or single key moments are important to trigger a pro-environmental interest.

Download Full-text

Using Remote Sensing Based Metrics to Quantify the Hydrological Response in a City

Water ◽

10.3390/w11091763 ◽

2019 ◽

Vol 11 (9) ◽

pp. 1763 ◽

Cited By ~ 1

Author(s):

Charlotte Wirion ◽

Willy Bauwens ◽

Boud Verbeiren

Keyword(s):

Remote Sensing ◽

Potential Evapotranspiration ◽

Remote Sensing Data ◽

Hyperspectral Data ◽

Hydrological Response ◽

Area Index ◽

Impervious Area ◽

Urban Catchments ◽

The City ◽

Total Impervious Area

We propose a remote-sensing based metric approach to evaluate the hydrological response of highly urbanized areas and apply it to the city of Brussels. The model is set-up using 2 m resolution hyperspectral data. Next, it is upscaled to the city level, using multi-spectral Sentinel-2 data with 20 m resolution. We identify the total impervious area, the vegetation cover and the leaf area index as important metrics to derive a timeseries of spatially distributed net rainfall, runoff and infiltration from rainfall data. For the estimation of the actual evapotranspiration we use the potential evapotranspiration and the available water storage based on the interception, the depression storage and the infiltration. Additionally, we route the runoff to the outlet of selected sub-catchments. An important metric for the routing is the timing to the outlet which is approximated using the total impervious area and the hydrological distance to the outlet. We compare our approach to WetSpa model simulations and reach R 2 values of 98% for net rainfall, 95% for surface runoff, 99% for infiltration and 97% for cumulative evapotranspiration. The routing in the Watermaelbeek catchment is evaluated with discharge observations and reaches NSE values of 0.89 at a 2 m resolution and 0.88 at a 20 m resolution using an hourly timestep. At the timestep of 10 min and a 20 m resolution the NSE is reduced to 0.76. For the Roodebeek catchment we reach an NSE of 0.73 at a spatial resolution of 20 m and an hourly timestep. The results presented in this paper are optimistic for using spatial and temporal metrics retrieved from remote sensing data to quantify the water balance of urban catchments.

Download Full-text