Spatial Concepts Notes - APHG PSO-1

Definition: Absolute location is the specific, distinct location on the Earth, pinpointed by coordinate systems.
Coordinates:
- Longitude and Latitude:
- Longitude measures E/W of the Prime Meridian and runs north–south; lines are typically described as 0° to 180° either East or West of the Prime Meridian.
- Latitude measures N/S of the Equator and runs east–west; lines are described as 0° to 90° either North or South of the Equator.
Data bits:
- Longitude lines = meridians
- Latitude lines = parallels
Practical note:
- We rarely use latitude/longitude alone to describe location for everyday purposes; more common absolute coordinating systems include street names and numbers.
- Example: NYC streets run East/West; avenues run North/South.

Global framework:
- 360° around the Earth corresponds to 24 hours per day, which yields approximately 15° of longitude per time zone.
- Formally: $\frac{360^\circ}{24\,\text{h}} \approx 15^\circ\text{ per time zone}.$
International Date Line:
- Generally located along 180°; movement across this line changes the calendar date.
Clock changes and political boundaries:
- Time zones are often adjusted to fit political/territorial boundaries rather than strict geometric divisions.
Practical implication:
- Traveling east toward the USA typically results in the clock moving back by 24 hours (date shift).

Definition: Relative location describes where something is located in relation to another location.
Uses and significance:
- Helps describe importance and connections between places.
- Carries social/economic implications (e.g., perceptions of which areas have “good” schools or are desirable to live in).
- Assists in locating unfamiliar places using landmarks (e.g., "my house is by the mall").
- Can explain levels of wealth or achievement (e.g., Singapore as a trading post/shortcut).

Perceptions of places are often formed without first-hand experience:
1) The South
2) Compton
3) The Middle East
Implication: Perceptions color our view of specific locations, influencing attitudes and decisions about those places.

Toponyms (place names):
- Reflect ethnicity, religion, physical characteristics, etc.
Site (physical/natural characteristics):
- Historically important for choosing settlement locations.
- Site modification by humans (leveling, irrigation, etc.).

Definition: Specific locations with unique, distinctive characteristics.
Human/emotional connection:
- Places often imply a sense of place and evoke feelings or memories.
Sense of place:
- Through decor, vibe, and character; examples include home, school, workplace, and regularly visited venues.

Places are subject to different interpretations, judgments, and evaluations, like a text.
Cultural landscape:
- The human-made, built environment that reveals priorities, activities, and local values/income/background of residents.
Globalization:
- Widespread global economic interconnectedness and spread of cultural attributes affecting place meanings.
Question for discussion:
- To what extent does Western/American culture influence local senses of place around the world?

Modern practice of creating a sense of place (often artificial):
- Deliberate manipulation of places to enhance appeal for tourism, investment, or branding.
Mechanisms:
- Consumer culture, advertising, destination marketing.
- Increased visual emphasis (TV commercials, imagery).
Consequences:
- Proliferation of similar landscapes and a diminished sense of landscape distinctiveness.

Placelessness:
- Diminishing distinctiveness; many locations appear similar, reducing emotional connection.
Revitalization:
- Removal of old structures and greater investment with new cultural attractions.
Examples:
- Las Vegas casinos
- Little India/Artesia (cultural districts undergoing revitalization or development)

Definition: Movement across space.
Types of flows:
- Tangible: people, money, goods, etc.
- Intangible: ideas, beliefs, trends, diseases, etc.
Impacts:
- Flows modify both sending and destination areas (e.g., migration introduces new cultural practices, changes to cultural landscapes, and food traditions).

Absolute vs. relative distance:
- Absolute: actual physical measurement between locations.
- Relative: distance as perceived in terms of time, effort, and cost.
Perceptions of distance:
- Distances are not purely physical; cognitive and social factors shape how far away something feels.
Friction of distance and distance decay:
- Interaction tends to decline with increasing distance; technology mitigates some of this friction.
Space-time compression:
- The concept that the world feels smaller due to improvements in transportation and communication, effectively shrinking perceived distances.

Core idea: Humans maximize usefulness of a location by prioritizing proximity for related activities.
Three aspects:
1) Get the most benefit for the minimum effort.
2) Maximize connections between places at the minimum cost.
3) Agglomeration: locate related/similar activities close together to gain synergies.

Definition: The geometric arrangement of objects/features in space.
Questions:
- Are patterns linear, circular, or haphazard?
Examples and explanations:
- US cities often use a rectangular/grid street pattern (grid) due to planning infrastructure and land division.
- European cities tend to have more irregular, organic street layouts reflecting historical development.
- Farmlands often exhibit distinct patterns based on land use, ownership, and irrigation practices.

Accessibility:
- The opportunity for contact/interaction with other locations through physical presence.
Connectivity:
- The level of development in communication networks (roads, telephone lines, Internet, etc.); may not be purely physical.
Important question:
- Is the closest option always the most accessible option? Not necessarily, due to factors like quality, cost, and connectivity.
Example:
- Airports in the Los Angeles area illustrate how accessibility and connectivity influence travel choices and regional economies.