## Activity 2

# Modelling of Suspended Particle Transport

**Aim**: To develop a spatial structure for suspended particle transport and deposition Objectives and expected outcomes:

## 2.1. Development of a suspended particle transport model

**Description**: The current developments will be used to create a suspended particle transport model which is specific for the sub-basin. The wave data obtained in Activity 1 will be used to calculate the maximum orbital particle speed along the coastline, based on the linear wave theory. The coastline streams caused by the waves (output data from Activity 1) will be calculated. The previous calculations will be used to calculate the particle speeds according to the sediment structure.

**Outcome**: Suspended particle transport model. A database with model-generated wave-induced coastline stream data, which (as necessary) may later be visualised as GIS layers and used for other (e.g., pollutant transfer) calculations. A database with the model-generated particle transfer speed data, which (as necessary) may be visualised as GIS layers. The data will be used in Objective 3 of Activity 2.

## 2.2. Calculations of the travel distances of particles transferred during storms

**Description**: The particle transfer model developed in Objective 1 of Activity 2 will be used to calculate the distances which sand particles may travel during one storm.

**Outcome**: A database with model-generated distances of particle transfer during a storm, which (as necessary) may be visualised as GIS layers. The data will be used for model calculations in Objective 3 of Activity 2.

## 2.3. Modelling of suspended particle stay times and transport paths

**Description**: The model developed in Objective 1 of Activity 2 and the model calculations performed within Objective 2 will be used to calculate the time (for how long the particles stay suspended) and the distance (how far and into which directions the particles may travel) for the suspended particle movements within one storm. The effects of the transferred particles on the coastline will be calculated. These data will be processed and presented spatially. Following the fieldwork (Activity 3) and the acquisition of new data, the model will be re-launched to verify the data and to introduce/integrate new data.

**Outcome**: As a result, data regarding the effects of the suspended particles on the coastline will be obtained for use in Activity 3.