A Look at Earth's Systems
Written and edited by Alexis Hays
Home to Mount Vesuvivius, the campagnia region of Italy holds some of the most dangerous and destructive volcanos in Earth's history. Vesuvius itself, was thought by the Romans as the home of the mighty hero Hercules. The Phlegrean fields of Campania, carved out of the landscape by the region's immense seismic activity (finish). Naples, the capital city of Italy sits on a beautiful coast in the Mediterranean Sea.
photo by Danilo D'Agostio, Unsplash.com
photo from Wikipedia
photo from Wikipedia
In this report, I will be presenting the results of my research on Naples, Italy and the surrounding Campania region.
The geographical location of Naples makes for a complex puzzle of interconnected pieces within Earth's Systems and it's morphology is incredibly diverse; its on a plate boundary, there's underground tunnels, it sits between coast and mountains, and it's in a Mediterranean climate, which in itself is unique. I was interested in applying as many concepts we learned this semester to one place. I also am naturally interested in classical history and have wanted to visit ancient ruins like Herculaneum and Pompeii since I first learned about Mount Vesuvius. Naples, called "the city with too much history," is overrun with medieval castles, greek and roman architecture, and even some of the city streets follow the same cobbled pathways once new to the city over 2000 years ago. The city was scarred by geographical disasters and the modern world grew up around them. I wanted to learn more about a city whose culture and history is so intricately tied to its geography ("World History").
Before my research, I knew some of the history of Naples; its proximity to Mount Vesuvius, the greek myths of Heraclese encountering giants in the 'fields of fire' known as The Phlegraean Fields, and I knew about Herculeanium and Pompeii. The relationship it has with Earth's systems were less known to me. Although, I did remember learning about the seismology resulting from it sitting on a convergent plate boundary. In some climate related news articles, I had read about the threat that Italy faces with a warming planet. The severe flooding, the droughts in summer, and the risk of earthquakes and landslides have all flashed across various newsfeeds in the convening years since my high school Earth Science class.
My research felt rather scattered at first. With this being an introductory class, many of the studies I came across, either in the Madison college database, or google scholar, were too advanced for me to understand. I tried to wrestle with these at first, and I do have a few in my works cited page, but the majority of my research came from news articles for the general public and even geology and travel blogs. Every week I struggled to find credible sources that didn't require a graduate level of understanding but still related enough to the relatively niche topics for the paper. While I don't think anything we learned this semester was particularly hard to understand, it necessarily covered more breadth than depth. Because the project focuses on a particular location, threading that needle felt even more difficult.
I also made things much harder on myself choosing a non-english-speaking location. I relied heavily on google translate, but learning the names of surrounding villages and larger municipalities was difficult but necessary to quickly skim study titles to make sure it was within the Campania region I chose. This is my first lengthy research project and I feel I've learned a lot about the process. If I were to do this again, I'd be much more organized at the start, build my bibliography over the semester and take more notes on why I chose a specific source and it's relavance to the paper. I'd also choose a place I'm more familiar with, both its geography and language. But I'm still happy I chose Naples, as it came from intrest rather than necessity.
Latitude: 40° 51' 22.72" N
Longitude: 14° 14' 47.08" E
Naples is a coastal city on the Mediterranean Sea and is the capital of the Campania region in Southern Italy.
Pierre-Jacques Volaire (French, 1729–1799) , Institute of Chicago
Today's city of Naples holds the site of the most famous volcanic eruption in human history. Tourists can visit the well-preserved ruins of Pompeii and Herculaneum within the modern city. The peak of Mount Vesuvius today stands 1,281m above sea level. When it erupted in 79 CE, the black cloud of ash and gas could be seen by surrounding cities as it climed 21 miles into the atmosphere("World History").
Photo by Skyler Smith on Unsplash
Photo by Cole Ciarlello on Unsplash
Pierre-Jacques Volaire (French, 1729–1799) , Institute of Chicago
Herculanuem was located closer to Mount Vesuvius than Pompeii. Unlike pompeii, buried by ashfall, Herculaneum was overwhelmed by hot pyroclastic flows that rushed down Vesuvius at high speeds. These flows buried the town under nearly 60 feet of volcanic mud and ash, instanly killing remaining residents. Because the material hardened quickly, wood buildings, furniture, food, and even papyrus scrolls were preserved far better than in Pompeii. Even the ancient frescas retain their vivid pigmentation("World History").
Pompeii faced the most destructive pyroclastic surges of the eruption. The flows of hot gas, ash, and pumice hurtled toward the city at speeds up to 100 mph and temperatures of 1300° F. Pompeii was eventually burried under 20 feet of volcanic material, preserving streets, homes, and even human remains in remarkable detail. Today, the site provieds one of the best archeological records of daily life in the ancient Roman world ("World History").
The massive plume of ash and volcanic gases spread ocross the Bay of Naples. For days, thick ash clouds darked skies around Naples. Crops and water resources were devastated. Even after the main plume collapsed, ash likely remained suspended in the air, affecting visibility and air quality ("World History").
Classical aqueducts and yellow tuff mines are still scattered just beneath the modern city of Naples. Tunnels, carved out of the yellow tuff that makes up the volcanic campania region was well-suited for constructing the powerful ancient buildings ("Underground Naples").
Once called "The City of Seven Castles," Naples is full of historic buildings but is famed for the number of castles within its borders ("Did you know").
Castel Nuovo, Castel Sant’Elmo, Castel Capuano, Castello del Carmine, Castello di Nisida, Forte di Vigliena, Castel dell’Ovo
Naples sits at 40°N and thus is predominately affected by the Northern Hemisphere Westerlies. These winds bring moist air from the Atlantic, contributing to the area's wet, milkd winters. Most of the regions rainfall comes from storms carried by these westerlies.
The Hadley Cell shifts northward in the summer, causing a suppression of cloud formation, creating hot, dry summers.
The city of Naples benefits from the ocean effect, and as such the summers are not typically as hot, nor the winters as harsh as other, continental regions at this latitude.
The hot-summer Mediterranean climate around Mt. Vesuvius and Naples provides a temperate, dry summer with temperatures in the summer ranging from 18-27degrees C. Winters in southern Italy around Naples receive abundant rainfall, up to about 1,000 mm per year, with October and November being the wettest months. Winter months are more mild than found in most temperate zones of this latitude, but the oceanic insulating from the Mediterranean keeps temperatures from dropping below -2/3degreesC. The lowest recorded temperature in the area was -5.7 degrees C in January 2012. The mountain peaks around Vesuvius tend to get snowfall in the winter months. The surrounding valleys and coastlines almost never see snow. Storms are more frequent at night.
Naples faces extreme climate risk especially as sea levels continue to rise. Over the next 30 years, 99% of homes in Naples are at risk of flooding. Shallow flooding is more likely to occur from heavy rains than the deep flooding caused by hurricanes.
Floodwalls, levees, and dams can help mitigate the flooding from heavy rainfall and river swelling. And coastal protections like seewalls and living breakwaters have been implemented as barriers against hurricanes.
Graph Credit: First Street Organization
Dark blue are areas likely to flood during an extreme flooding affect within the next thirty years.
Though the Mediterranean sea lacks the depth and volume of the Atlantic and Pacific oceans, Naples' climate is heavily influened by ocean effects.
The Tyrrhenian sea, a northern stretch of the Mediterranean insulates Naples (red) from the harsher winters of the mid-latitudes.
The North Atlantic Current feeds warm water into the Mediteranean thorugh the Strait of Gibraltar (underlined in yellow)
Traditional tropical cyclones don't typically occur in the Mediterranean because it lacks the warm tropical water + broad ocean basins for those large storms.
Medicanes, a rare, small-scale hurricane-like storm, sometimes form if the right conditions allow.
Medicanes might be occurring more frequently due to climate change, but research is ongoing(MedCyclones, 2023).
Medicanes rarely hit Naples directly since they often form in the central Mediterranean, south east of Italy. However, Naples often experiences intense rainfall and coastal storm surges as it often sits on the edge of the impact zone.
Intense Rain
Storm Surges
Strong winds
Csa: Hot Summer Mediterranean Climate
Occur on the western edges of most continents
Hot dry summers
Cool wet winters
Source: Mohr, Andrea. "Naples Climate." Climate Data, https://en.climate-data.org/europe/italy/campania/naples-4561/
Weather in Naples and the Campagnia region tends to have hot/temperate summers, ranging from 18-27 degrees Celsius from June-August.
While temperatures may be high in the summer, the ocean breeze tends to keep the area relatively cool, except in the highly dense urban environment of Naples proper.
Cooler months provide abundant rainfall, with October and November being the wettest months. Annual precipitation typically gets up to about 1,000 mm per year.
The winter months bring cool but mild temperatures, ranging from 3-10 degrees Celsius and oftentimes snowfall, but only at higher elevations like around the peak of Mount Vesuvius.
The Italian National Agency for New Technologies reported that temperatures will increase significantly in the Mediterranean by 2100. At the same time, the climate models showed a decrease in total annual precipitation with an increase in extreme weather. Below, figure 1 shows projected temperature increase across Italy while figure 2 shows changes in precipitation. Each figure compares four climate models (shown on the right) under three different emissions scenarios, demonstrating how outcomes by 2100 vary depending on the level of environmental policy implementation and mitigation efforts.
SSP1 shows the lowest emissions while SSP5 shows the highest emissions scenario with no mitigation.
The researchers note the value of localized climate modeling for local regions in the Mediterranean because it is "a climate hotspot characterized by a highly heterogeneous morphology" meaning that it's wildly diverse and so the complexity of the region necessitates a high degree of analysis.
In Naples, and the rest of the Campania region, projected warming and reduced average rainfall could dry and destabilize the volcanic soils, while increasingly intense rainfall events will raise the risk of flash floods and landslides as seen in past disasters like the Sarno event. (Finish Sarno event discussion)
The city of Naples and much of the surrounding villages and mountains sits atop an ancient tunnel system made up of ancient mines and aqueducts build beneath the city over 2,500 years ago. The Neapolitan yellow tuff is a durable volcanic sandstone composed of compacted layers of volcanic ash. Most Tuffs are relatively soft rocks, but the welded yellow tuff of Naples uniquely strong. While the exact process of its formation is still up for debate, researchers agree that it originates from a large explosive eruption somewhere in the Phlegraean Fields which deposited the pyroclastic flow, but the exact pathway wherein the loose volcanic material transformed into the unique, hardened yellow tuff is not yet fully settled ("Geomaterials in Neapolitan Architecture").
Another Historic building stone of Naples is Piperno. It's also a volcanic rock made from welded tuff. This one contains darker crystals which can be seen in the staircase to the left Morra et al. (2020) Piperno and Neapolitan Yellow Tuff both played a major role in shaping the architecture and identity of Naples, representing the connection between city's culture and its geologic history ("Geomaterials in Neapolitan Architecture").
Photo Credit: Geology.com
Photo Credit: geologyscience.com
Photo Credit: Geology.com
Find marine fossils?
Photo Credit: astro_andreas, Instagram
This boundary created the Alps in Northern Italy as well as the Apennines Mountain Range which runs down the entire length of the country. Mount Vesuvius, Campi Flegrei are both volcanoes that result from the impressive seismic activity of the region (Ball).
To the left is a simplified view of how Italy sits above the subduction zone of the Eurasian and African plate boundary.
The continual subduction generates magma and leads to frequent seismic activity, making Italy one of the most volcanically active regions in Europe.
Some researchers propose that a slab window, a tear in the subjecting plate, exists beneath the region. This feature may alter mantle flow and allow different times of magma to rise. As a result, Vesuvius shows different chemical compositions compared to others in the Campanian Arc. However, this explanation is still up for debate (Ball).
Given the high population density around Naples, research in eruption frequency is critical. A study published in Frontiers in Earth Science analyzes the eruption histories of Mount Vesuvius, Campi Flegrei, and Ischia to better assess long-term volcanic hazards in the region.
According to this study, each volcano has its own eruption pattern, with long periods of dormancy followed by episodes of activity (Giudicepietro et al).
All countries in the Mediterranean experience relatively high seismic activity so earthquakes and landslides also occur at a high frequency. Because Naples is a densely populated coastal city, that also raises the risk of floods and fires. According to the International Trade Administration "Italy ranks as the 52nd most disaster-prone country according to the 2023 World Risk Index (ITA Italy: Landslide, Flood Management and Prevention)
93.9% of Italy’s municipalities (7,423) are at risk from landslides, floods and/or coastal erosion.
Overall, 1.3 million inhabitants are at risk of landslides and 6.8 million inhabitants at risk of flooding. Out of a total of over 14.5 million buildings, over 565,000 (3.9%) are located in high and very high-risk areas for landslides while 1.5 million (10 .7%) are located in areas with above average risk of flooding.
In 2022, landslides and flash floods killed 25 people, injured 26, and left 1,384 people homeless.
In addition, 17,9% of the Italian coastline suffers from erosion and continues to worsen by the day (ISPRA)
A study published in 2012 analyzed the relationship between landslide hazards and densely populated urban areas of Campania, Italy. According to this study, primary causes of landslides in Naples are a compbination of natural and human factors:
Heavy rainfall, especially long duration storms in the fall and spring, saturate the loose volcanic soils on steep slopes.
Quarrying, excavation, urbanization, deforestation all weaken slope stability and despite strict zoning laws passed to protect high risk areas, enforcement of these laws has been inadequate( Di Martire, et al.)
This graph shows the location of recorded landslides between 1868-2011. The Phlegrean Fields are the most at risk based on steep volcanic terrain, weak soils, and intense human pressure.
This graph distributes the causes of recorded landslides in Naples between 1868-2011, further emphasizing the affects that human activity has on landslide risk (Di Martire, et al).
An article from Italy on This Day, described a devastating mass wasting event in Italy's history. May 5th, 1998 Salerno and Naples experienced over 140 landslides. 160 people died, hundreds were injured, and thousands more lost their homes. It's recorded as one of Italy's most severe hydrogeological disaster in the last 50 years.
Photo Credit: "Mudslides in Campania"
The loose volcanic soils lost strenght after several days of rainfall saturated the ground. Debris flows flooded down steep mountain slopes above Sarno, crushing buildings and burrying roadways. Author notes that the "catastrophe prompted the Italian Ministry of the Environment to introduce legislative measures for environmental protection which have come to be known as Legge Sarno, or Sarno Laws (Italy on This Day)".
Map from: Freemaps.com
There are two primary rivers in Campania, the Volturno and the Sele.
They each follow the dendritic pattern for river basins. The Voloturno River basin rolls across northern Campania's broad valleys and low range mountains before reaching the Tyrrhenian Sea and Sele, to the south, flows down steeper Apennine Mountains before meeting the main channel fillng the gulf of Salerno. I've drawn their main channels in darker blue and the tributaries in light blue.
Dendritic drainage patterns typically suggest that the subsurface geology is relatively uniform, not overly affected by faults, folds, or alternating rock layers(textbook). Though Italy overall has been carved out by the convergent plate boundary it sits on and so contains volcanic topography, the rivers mainly flow across sedimentary plains and evenly weathered volcanic deposits. Because the underlying materials are relatively consistent, streams are able to branch naturally in a tree-like pattern.
Photo Credit: Pasque Albano
The Apennine Mountain Range creates a complex hydrogeoloogical setting for aquifers in Campania, Italy. There are 80 Principla Aquifers that flow through karst, alluvial, volcanic, and terrigenous rock and are relied on as a source for drinking water in the region. (Tufano et. al).
Photo Credit: Peak Visor
According to this paper, the rapid urbanization around Naples has been affecting local alluvial aquifers with pollution from agriculture and urban waste. In recent years, Italy's government created the Transparent Campania project, hoping to assess the groundwater vulnerability.
The image to the left compares a typical vulnerability assessment(left) to a higher-impact scenario assessment (right) where polition is more intese because of human activity.
This suggests that groundwater vulnerability is already at risk from environmental pressures alone, but when also accounting for human-derived contamination, Campania's aquifers are especially vulnerable.
The study suggests that Campania needs better land-use planning, arguing that areas classified as highly vulnerable should receive stricter protections against the construction of industrial, agriculture, or waste-disposal areas. The study also suggested that industrial agriculture shift toward sustainable practices and away from the use of fertilizers and pesticides which can infiltrate shallow alluvial aquifers. For the city of Naples, the paper argues for regulation of waste management around Naples, as the city's landfills have also infiltrated local aquifers(Tufano et al).
Photo Credit: Luigi Avantaggiato
Naples is too far south and too affected by the Mediterranean to have glaciers or glacially-derived landforms. However, in Northern Italy, in the Alps. To the left, The Foni Glacier, glows under the moonlight.
In 2021, Yale Environment, published an article about the rapid recession of glaciers in Northern Italy and the serious environmental and societal consequences the region faces.
Photo Credit: Angelo Vismara
Photo Credit: Giuseppe Cola / Servizio Glaciologico Lombardo
The Forni Glacier has lost almost half of its volume since the picture on the left in 1860. The author and photographer of this article warns about the dangers of glacial melt reaching a "tipping point" where the glacial recedes and reveals enough of the dark sediment underneath that the region loses albedo and absorbs more energy, creating a positive feedback loop (Avantaggiato).
The changing landscape threatens not only local habitats, but Italian Alpine tradition and lifestyle. The author explains how Alpine farmers, shepards, and cheese farmers all depend on the glacial meltwater. Local streams fed by the glacier now cause destructive floods and as the glaciers recede, the streams will slow and eventually dry up (Avantaggiato).
By Dinobito - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=90353963
Italy's climate does not support desert landscapes, even in the hotter inland regions the the landscape recieves too much rainfall. The mountains and lush vegetation from alpine forests, to coastal scrubland thrive in the humid environment.
It does have the Accona Desert, but even that isn't technically a desert, as it's still a Csa climate. The name comes from the dry terrain of the local badlands, made up of marine sedimentary deposits (Torri, et al).
Naples, Italy sits along the Gulf of Naples, part of the Tyrrhenian Sea, seismic activity and wave action strongly affect coastal processes. Researchers Aiello and Caccavale published a geomorphological study in 2023 that analyzed the coast and seafloor in the Gulf of Naples to better understand the sedimentary processes that shape the region (Aiello et al).
Campania Coastlines include both erosional and depositional landforms. Beaches are mainly depositional, formed by waves which deposit desdiment onshore.
According to the study, the sediment found along Naples is predominantly volcanic, supplied by past eruptions of Mount Vesuvius (Aiello et al.)
Frank Bienewald,Getty Images(1) RajSmith, Flickr.com(2) Oleg Albinsky, iStock.com(3)
The Amalfi Coast and the Sorrentine Peninsula are primarily erosional landforms. Wind and waves erode away softer and looser bedrock, forming the steep cliffs pictured here (Davis).
Naples is a perfect example of the Koppen Csa, or Mediterranean climate. The Csa climates often experience ocean effect, which insulates the area from extreme temperature swings. So despite sitting around temperate latitudes, these climates have very mild summers with some rain, and wet but mild winters.
However, due to the Urban and Village biomes of the region, the city itself can experience hot and humid summers as the urban heat island effect keeps the dense city center warmer. The sea breeze which would normally sweep away the hot and humid air, providing relief for humans, animals, and vegetation cannot fully mitigate the low albedo of the city streets and structures.
If conditions are right, summers can bring with them moist hazy, sand-filled winds blowing north from Africa across the mediterranean. These winds can cause health problems for humans and animals living there. They even coat the city with a fine, red dust which can affect a plant's ability to photosynthesize.
Non-native plant brought by the Greeks and well-suited for Naples' hot summers and wet winters.
Also brought over by the Greeks, Olives grow abundantly in Naples' climate.
Oils in aromatics like Thyme and their broad, rubbery leaves that protect them from the sun.
Evergreen perrennial trailing plant, known for its bright flowers and pointed, purple leaves.
("Plant Encyclopedia")
Falcon native to the Apennine Mountains.
Central mainly to Italy's Apennines, the Chamois are supporting by a new convservation effort to support population growth.
Found worldwide, and all throughout the Mediterranian
Conservation sites in Campania and throughout the Apennines support population growth.
("Wildlife of Italy")
The Soils of Italy - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Map-of-the-dominant-reference-soil-groups-of-the-WRB-derived-from-the-soil-systems_fig6_260065827 [accessed 10 May 2026]
In "The Soils of Italy," is a detailed pedology of Italy and in it, the author provides excellent maps detailing Italy's various soil types. Notice how much variety Italy has (above), and how Andosols are highly localized around Mount Vesuvius and the Phlegraen Fields (below).
The Soils of Italy - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Map-of-the-dominant-reference-soil-groups-of-the-WRB-derived-from-the-soil-systems_fig6.54 _260065827 [accessed 10 May 2026]
The Soils of Italy - Scientific Figure on ResearchGate
High water and nutrient retention due to porosity
Limited structural stability in areas with intense rainfall
Highly porous, dark, soil
Composition: volcanic ash, tuff, and pumice
Account for less than 1% of soil on Earth
(Britannica)
Naturally, these nutrient-rich, volcanic soils come at the risk of earthquakes, volcanic eruptions, and landslides.
These soils, in less wet conditions would have the benefits of the nutrient retention without the risk of landslides.
Unfortunately, the steep, unstable slopes are highly vulnerable to erosion, especially in the rainy fall and spring seasons in Campania (Climate source).
Naples, Italy and the surrounding Campania region tells its history through the dramatic, volcanic landscapes. The city's extraordinary preservation of its history shows how populations have created societies tightly intertwined with the local climate and geography. Campania's famous volcanic Arc gave the world a snapshot of history, frozen in time by Vesuvius in 79 AD and is still active today, contribuitng to ongoing studies of geologic hazards like landslides, earthquakes, and eruptions. Throughout the region's history, populations have benefitted from the fertile volcanic soils and coastal beaches. Insulated by the Mediterranean Sea, Naples experiences mild winters and hot, dry summers. Campania's combination of volcanic activity, coastal geography, and human settlement create a complex puzzle of Earth's Systems.
Through this research, I deepened my appreciation for classical history and nature by applying concepts we've learned this semester in order to tell the story of the regions' landscape. I've wanted to visit Italy for years, to see how modern day intertwines so naturally with ancient cobblestone streets and medieval castles. Before this, I only knew of Mount Vesuvius, Pompeii, and Herculaneum, but now I want to explore the ancient aqueducts and thermal vents that exist beneath and around Naples. Studying the "Fields of Fire," where historians say "that the Giants laid low by Hercules’ weight shake the earth (Silius,12.143-46 )" inspired in me a new appreciation for humanity's perseverance, even through dangerous and destructive landscape.