Holderness

Question 1

Where is the Holderness Coast and why is it significant?

Answer 1

Located on the east coast of England (Yorkshire), it is one of Europe’s fastest eroding coastlines—eroding at to 1.2m per year.

Question 2

What is the geology of the Holderness Coast?

Answer 2

It consists of soft boulder clay (glacial till), which is easily eroded by marine and sub-aerial processes. Chalk is found further north at Flamborough Head.

Question 3

What are the main coastal processes affecting the Holderness Coast?

Answer 3

Hydraulic action, abrasion, and corrosion (marine processes); Weathering and mass movement (slumping common due to saturated clay); Longshore drift moves material southward, leaving some areas starved of sediment.

Question 4

What erosional landforms are found at the Holderness Coast?

Answer 4

Headlands and bays at Flamborough Head; Caves, arches, stacks, and stumps (e.g., Selwicks Bay); Wave-cut platforms.

Question 5

What depositional landforms are found along the Holderness Coast?

Answer 5

Spurn Point: a recurved spit formed by longshore drift; Sandy beaches in low-energy environments (e.g., around Withernsea).

Question 6

How has human management attempted to protect the Holderness Coast?

Answer 6

Hard engineering at Hornsea, Mappleton, and Withernsea (e.g., groynes, sea walls, rock armour); Two rock groynes and revetments installed at Mappleton in 1991; Soft engineering at Spurn Head (previously managed retreat).

Seas walls at Withernsea, Hornsea, and Bridlington

Question 7

What are the impacts of coastal management at Holderness?

Answer 7

Groynes prevent longshore drift, starving areas further south (e.g., increased erosion at Cowden); Spurn Point is at risk of being breached without sediment supply; Conflicts between protecting property and natural processes.

Question 8

What role does climate change play in the erosion of the Holderness Coast?

Answer 8

Rising sea levels increase wave energy and erosion; More frequent storms add to cliff retreat and damage to defences.

Question 9

What are the main stakeholder conflicts along the Holderness Coast?

Answer 9

Local residents want protection for homes; Farmers want land preserved but often can’t afford private defences; Environmentalists support natural processes (e.g., managed retreat); East Riding of Yorkshire Council balances cost, protection, and sustainability; Businesses & tourism want protection for economic stability; Conflicts arise when defences in one area increase erosion elsewhere.

Question 10

What is sustainable coastal management and how is it applied at Holderness?

Answer 10

Focuses on long-term, low-impact strategies that work with natural processes; Example: Managed retreat at Spurn Head—no longer defending spit from erosion; East Riding Coastal Change Fund helps relocate and compensate at-risk residents; Coastal monitoring & adapting strategies over time = adaptive management.

Question 11

What are the hard engineering strategies used at Holderness?

Answer 11

Sea walls (e.g., Hornsea): reflect wave energy but expensive and need maintenance; Groynes (e.g., Hornsea & Mappleton): trap sediment to build up beaches but starve southern areas; Rock armour (riprap): large boulders absorb wave energy (e.g., Withernsea, Mappleton); Revetments: sloping structures that absorb wave energy (used at Mappleton in 1991).

Question 12

What is Spurn Head and why is it significant?

Answer 12

A recurved spit formed by longshore drift transporting sediment south; Protects the Humber Estuary; Home to unique ecosystems and bird habitats; Was defended in the past but now is under managed retreat; It is one of the longest spits in Europe.

Question 13

What is Flamborough Head and why is it resistant to erosion?

Answer 13

Flamborough Head is a headland made of chalk, which is a harder, more resistant rock than glacial till, so it erodes more slowly.

Question 14

What is the geological structure of the Holderness coastline?

Answer 14

The Holderness coast is a discordant coastline, where alternating bands of chalk and glacial till create headlands and bays.

Question 15

Why are chalk joints and faults significant for erosion?

Answer 15

Vertical cracks (joints) and faults in chalk are weak points, making them more susceptible to erosion and weathering.

Question 16

What makes Bridlington Bay vulnerable to erosion?

Answer 16

Bridlington Bay has a narrow beach, offering little protection to the soft cliffs, making them highly vulnerable to erosion.

Question 17

How does erosion at Holderness contribute to the sediment cell?

Answer 17

High erosion rates generate large amounts of sediment, which are transported by longshore drift to feed the sediment cell.

Question 18

How much has the Holderness coastline retreated since Roman times?

Answer 18

The coastline has retreated up to 5km since Roman times, leading to the loss of settlements.

Question 19

What are the two main rock types along the Holderness coast and how do they differ?

Answer 19

Chalk is resistant, forming headlands (e.g., Flamborough Head), while glacial till is easily eroded, forming bays like Holderness Bay.

Question 20

How do sea and weather conditions increase erosion at Holderness?

Answer 20

Northeast winds create a powerful fetch, and low-pressure systems funnel water in the North Sea, causing storm surges.

Question 21

What is the direction and impact of longshore drift at Holderness?

Answer 21

Longshore drift moves north to south along the Holderness coast. It transports sediment, but groynes can cause sediment starvation downstream.

Question 22

What is significant about the erosion rate and location of the Holderness Coast?

Answer 22

Holderness is the fastest eroding coastline in Europe at 1.2 metres per year. It is located on the North Sea coast.

Question 23

What is the geology of the Holderness Coast and how does it affect erosion?

Answer 23

The coastline is made of glacial till (boulders, sand, clay), which is easily eroded due to its softness.

Question 24

How do wind and wave energy affect the Holderness Coast?

Answer 24

The UK’s main wind comes from the Caribbean, but Holderness is on the leeward (sheltered) side. It has a short fetch and is part of a sediment cell.

Question 25

What is the origin of the sediment at the Holderness Coast?

Answer 25

A *thousand years ago*, an *ice sheet* in the North Sea deposited *boulders, sand, stone, and clay* on the coast. As it melted, it left a blanket of *glacial till*.

Question 26

What is the impact of historical sea level changes on the Holderness Coast?

Answer 26

The *melting ice sheet* led to a *static sea level rise*. The *last ice age* ended around *10,000 years ago*.

Question 27

What is the historical significance of the Holderness Coast?

Answer 27

The *Romans* built settlements on the coastline *2,000–3,000 years ago*. The cliffs are *soft*, so erosion is fast.

Question 28

What kind of coastline is Holderness and how does sediment move?

Answer 28

It is a *discordant coastline*. The sea appears *brown* due to *suspended sediment*. *Longshore drift* moves sediment *south*.

Question 29

What hard engineering strategies are used at Mappleton and Withernsea?

Answer 29

*Groynes* are used at *Mappleton*. *South of Mappleton*, there is *sediment starvation*. *Sea walls* (including recurved walls) are found at *Withernsea*.

Question 30

What is the environmental cost of sea defences like concrete sea walls?

Answer 30

*Concrete* sea walls were replaced due to *sea level rise*. *Concrete* is responsible for *1% of global CO2 emissions*. *Sea defences* stretch over *1 km* at *Willemstee beach*.

Question 31

Where in holderness has groynes?

Answer 31

Mappleton and witherensea

Question 32

Assess the extent to which freeze thaw weathering is a dominant process at the coastline

Answer 32

Freeze thaw weathering us when water seeps into cracks and joints within the geological strata and freezes at night or below sub zero twmperatures. This causes a 10% increase in size and causes the rock to shatter. However cavitaton also causes erosion, through pressure being exerted on rock through destructive waves that have built up energy over the large fetch e.g. across the north sea