Patterns of flows of cocaine across the United States are identified using open-source price data. The data set consists of wholesale prices for powdered cocaine for 112 U.S. cities published biannually by the National Drug Intelligence Center (NDIC) between 2002 and 2011. For each of the 6,126 possible unique pairs of cities in the sample, cocaine is inferred to flow from the city with the lower price to the city with the higher price if the prices in the two cities show a correlation that exceeds a threshold value. This threshold value is calibrated using data on anecdotal city-to-city flows published by the U.S. Department of Justice. The results show a striking pattern of cocaine flows from the south and west of the United States to the north and east. A cluster analysis of cities based on inward and outward links is used to classify each city as a “source,” “destination,” “transit,” or “isolate.”
ArkesJ.PaculaR. L.PaddockS. M.CaulkinsJ. P.ReuterP. (2008). Why the DEA STRIDE data are still useful for understanding drug markets (NBER Working Paper No. 14224). Cambridge, MA: National Bureau of Economic Research.
2.
BullingtonB. (1991). A smugglers paradise: Cocaine trafficking through the Bahamas. Crime, Law and Social Change, 16, 59-83.
3.
BuxtonJ. (2006). The political economy of narcotics: Production, consumption and global markets. Black Point, Nova Scotia, Canada: Fernwood Publishing.
4.
CaulkinsJ. P. (1994). Developing price series for cocaine. Santa Monica, CA: RAND
5.
CaulkinsJ. P. (1995). Domestic geographic variation in illicit drug prices. Journal of Urban Economics, 37, 38-56.
6.
CaulkinsJ. P. (2005). Price and purity analysis for illicit drug: Data and conceptual issues (Heinz Research Paper No. 25). Retrieved from http://repository.cmu.edu/heinzworks/25
7.
CaulkinsJ. P.BondB. M. (2012). Marijuana price gradients implications for exports and export-generated tax revenue for California after legalization. Journal of Drug Issues, 42, 28-45.
8.
CaulkinsJ. P.GurgaB.LittleC. (2009). Economic analysis of drug transaction “cycles” described by Incarcerated UK drug dealers. Global Crime, 10, 94-112.
9.
CaulkinsJ. P.PadmanR. (1993). Quantity discounts and quality premia for illicit drugs. Journal of the American Statistical Association, 88, 748-757.
10.
CaulkinsJ. P.ReuterP. M. (1998). What price data tell us about drug markets. Journal of Drug Issues, 28, 593-612.
11.
CaulkinsJ. P.ReuterP. M. (2010). How drug enforcement affects drug prices. Crime and Justice, 39, 213-271.
12.
ChandraS.BarkellM. (2013). What the price data tell us about heroin flows across Europe. International Journal of Comparative and Applied Criminal Justice, 37, 1-13.
ClawsonP.LeeR. W.III. (1996). The Andean cocaine industry. New York, NY: St. Martins Press.
15.
Costa StortiC.De GrauweP. (2009). The cocaine and heroin markets in the era of globalisation and drug reduction policies. The International Journal on Drug Policy, 20, 488-496.
16.
DarkeS.HallW.ToppL. (2000). The Illicit Drug Reporting System (IDRS) 1996-2000 (NDARC Technical Report No.101). New South Wales, Australia: National Drug and Alcohol Research Centre.
17.
DegenhardtL.ConroyE.GilmourS.CollinsL. (2005). The effect of a reduction in heroin supply in Australia upon drug distribution and acquisitive crime. British Journal of Criminology, 45, 2-24.
18.
DietzeP. (2008). What more can we learn from the heroin drought?The International Journal of Drug Policy, 19, 270-272.
19.
FarrellG.MansurK.TullisM. (1996). Cocaine and heroin in Europe 1983-93: A cross-national comparison of trafficking and prices. British Journal of Criminology, 36, 225-281.
20.
FriesA.AnthonyR. W.CsekoA.Jr.GaitherC. C.SchulmanE. (2008). Technical Report for the Price and Purity of Illicit Drugs: 1981–2007. Alexandria, VA: IDA.
21.
GreenfieldV. A.PaoliL. (2012). If supply-oriented drug policy is broken, can harm reduction help fix it? Melding disciplines and methods to advance international drug-control policy. The International Journal of Drug Policy, 23, 6-15.
22.
HartiganJ. A. (1975). Clustering algorithms. New York, NY: John Wiley.
23.
HarwoodH.FountainD.LivermoreG. (1998). The economic costs of alcohol and drug abuse in the United States 1992. Rockville, MD: National Institutes on Drug Abuse.
KleimanM. A. R. (1989). Marijuana: Costs of abuse, costs of control. New York, NY: Greenwood Press.
26.
KorsellL.VesterhavD.SkinnariJ. (2011). Human trafficking and drug distribution in Sweden from a market perspective—Similarities and differences. Trends in Organized Crime, 14, 100-124.
MironJ. A. (2004). Drug war crimes: The consequences of prohibition. Oakland, CA: The Independent Institute.
29.
MironJ. A.ZwiebelJ. (1995). The economic case against drug prohibition. The Journal of Economic Perspectives, 9(4), 175-192.
30.
NievesR. (1998). Colombian cocaine cartels: Lessons from the front. Trends in Organized Crime, 3(3), 13-29.
31.
OkundayeJ. N. (2004). Drug trafficking and urban African American youth: Risk factors for PTSD. Child & Adolescent Social Work Journal, 21, 285-302.
32.
PiazzaJ. A. (2011). The illicit drug trade, counternarcotics strategies and terrorism. Public Choice, 149, 297-314.
33.
PoretS. (2002). Paradoxical effects of law enforcement policies: The case of the illicit drug market. International Review of Law and Economics, 22, 465-493.
34.
RajkumarA.FrenchM. (1997). Drug abuse, crime costs, and the economic benefits of treatment. Journal of Quantitative Criminology, 13, 291-323.
35.
ReuterP. M. (1988). Can the borders be sealed?The Public Interest, 92, 51-65.
36.
ReuterP. M.CaulkinsJ. P. (2004). Illegal “lemons”: Price dispersion in cocaine and heroin markets. Bulletin on Narcotics, 56, 141-165.
37.
ReuterP. M.KleimanM. A. R. (1986). Risks and prices: An economic analysis of drug enforcement. Crime and Justice, 7, 289-340.
SarricaF. (2008). Drugs prices and systemic violence: An empirical study. European Journal on Criminal Policy and Research, 14, 391-415.
40.
SevignyE. L.SaisanaM. (2013). Developing the U.S. drug consequences indices, 2000–2009. Washington, DC: Office of National Drug Control Policy, Executive Office of the President.
41.
ShelleyL. (2012). The relationship of drug and human trafficking: A global perspective. European Journal on Criminal Policy and Research, 18, 241-253.
42.
SingerM. (2008). Drugs and development: The global impact of drug use and trafficking on social and economic development. The International Journal of Drug Policy, 19, 467-478.
WeatherburnD.JonesC.FreemanK.MakkaiT. (2001). The Australian heroin drought and its implications for drug policy. Crime and Justice Bulletin, 59, 1-16.
51.
WilloughbyR. (2003). Crouching Fox, Hidden Eagle: Drug trafficking and transnational security—A perspective from the Tijuana-San Diego border. Crime, Law and Social Change, 40, 113-142.
